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<cvrfdoc xmlns="http://www.icasi.org/CVRF/schema/cvrf/1.1" xmlns:cvrf="http://www.icasi.org/CVRF/schema/cvrf/1.1">
  <DocumentTitle xml:lang="en">Security update for the Linux Kernel RT (Live Patch 16 for SLE 15 SP5)</DocumentTitle>
  <DocumentType>SUSE Patch</DocumentType>
  <DocumentPublisher Type="Vendor">
    <ContactDetails>security@suse.de</ContactDetails>
    <IssuingAuthority>SUSE Security Team</IssuingAuthority>
  </DocumentPublisher>
  <DocumentTracking>
    <Identification>
      <ID>SUSE-SU-2024:3833-1</ID>
    </Identification>
    <Status>Final</Status>
    <Version>1</Version>
    <RevisionHistory>
      <Revision>
        <Number>1</Number>
        <Date>2024-10-30T18:34:20Z</Date>
        <Description>current</Description>
      </Revision>
    </RevisionHistory>
    <InitialReleaseDate>2024-10-30T18:34:20Z</InitialReleaseDate>
    <CurrentReleaseDate>2024-10-30T18:34:20Z</CurrentReleaseDate>
    <Generator>
      <Engine>cve-database/bin/generate-cvrf.pl</Engine>
      <Date>2017-02-24T01:00:00Z</Date>
    </Generator>
  </DocumentTracking>
  <DocumentNotes>
    <Note Title="Topic" Type="Summary" Ordinal="1" xml:lang="en">Security update for the Linux Kernel RT (Live Patch 16 for SLE 15 SP5)</Note>
    <Note Title="Details" Type="General" Ordinal="2" xml:lang="en">This update for the Linux Kernel 5.14.21-150500_13_58 fixes several issues.

The following security issues were fixed:

- CVE-2021-47598: sch_cake: do not call cake_destroy() from cake_init() (bsc#1227471).
- CVE-2023-52752: smb: client: fix use-after-free bug in cifs_debug_data_proc_show() (bsc#1225819).
- CVE-2024-36899: gpiolib: cdev: Fix use after free in lineinfo_changed_notify (bsc#1225739).
- CVE-2024-40954: net: do not leave a dangling sk pointer, when socket creation fails (bsc#1227808)
- CVE-2024-41059: hfsplus: fix uninit-value in copy_name (bsc#1228573).
- CVE-2024-40909: bpf: Fix a potential use-after-free in bpf_link_free() (bsc#1228349).
- CVE-2023-52846: hsr: Prevent use after free in prp_create_tagged_frame() (bsc#1225099).
- CVE-2024-26923: Fixed false-positive lockdep splat for spin_lock() in __unix_gc() (bsc#1223683).
</Note>
    <Note Title="Terms of Use" Type="Legal Disclaimer" Ordinal="3" xml:lang="en">The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).</Note>
    <Note Title="Patchnames" Type="Details" Ordinal="4" xml:lang="en">SUSE-2024-3833,SUSE-SLE-Module-Live-Patching-15-SP5-2024-3833</Note>
  </DocumentNotes>
  <DocumentDistribution xml:lang="en">Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0)</DocumentDistribution>
  <DocumentReferences>
    <Reference Type="Self">
      <URL>https://www.suse.com/support/update/announcement/2024/suse-su-20243833-1/</URL>
      <Description>Link for SUSE-SU-2024:3833-1</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://lists.suse.com/pipermail/sle-security-updates/2024-October/019723.html</URL>
      <Description>E-Mail link for SUSE-SU-2024:3833-1</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://www.suse.com/support/security/rating/</URL>
      <Description>SUSE Security Ratings</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1223683</URL>
      <Description>SUSE Bug 1223683</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1225099</URL>
      <Description>SUSE Bug 1225099</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1225739</URL>
      <Description>SUSE Bug 1225739</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1225819</URL>
      <Description>SUSE Bug 1225819</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1227471</URL>
      <Description>SUSE Bug 1227471</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1228349</URL>
      <Description>SUSE Bug 1228349</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1228573</URL>
      <Description>SUSE Bug 1228573</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1228786</URL>
      <Description>SUSE Bug 1228786</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://www.suse.com/security/cve/CVE-2021-47598/</URL>
      <Description>SUSE CVE CVE-2021-47598 page</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://www.suse.com/security/cve/CVE-2023-52752/</URL>
      <Description>SUSE CVE CVE-2023-52752 page</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://www.suse.com/security/cve/CVE-2023-52846/</URL>
      <Description>SUSE CVE CVE-2023-52846 page</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://www.suse.com/security/cve/CVE-2024-26923/</URL>
      <Description>SUSE CVE CVE-2024-26923 page</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://www.suse.com/security/cve/CVE-2024-36899/</URL>
      <Description>SUSE CVE CVE-2024-36899 page</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://www.suse.com/security/cve/CVE-2024-40909/</URL>
      <Description>SUSE CVE CVE-2024-40909 page</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://www.suse.com/security/cve/CVE-2024-40954/</URL>
      <Description>SUSE CVE CVE-2024-40954 page</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://www.suse.com/security/cve/CVE-2024-41059/</URL>
      <Description>SUSE CVE CVE-2024-41059 page</Description>
    </Reference>
  </DocumentReferences>
  <ProductTree xmlns="http://www.icasi.org/CVRF/schema/prod/1.1">
    <Branch Type="Product Family" Name="SUSE Linux Enterprise Live Patching 15 SP5">
      <Branch Type="Product Name" Name="SUSE Linux Enterprise Live Patching 15 SP5">
        <FullProductName ProductID="SUSE Linux Enterprise Live Patching 15 SP5" CPE="cpe:/o:suse:sle-module-live-patching:15:sp5">SUSE Linux Enterprise Live Patching 15 SP5</FullProductName>
      </Branch>
    </Branch>
    <Branch Type="Product Version" Name="kernel-livepatch-5_14_21-150500_13_58-rt-5-150500.11.6.1">
      <FullProductName ProductID="kernel-livepatch-5_14_21-150500_13_58-rt-5-150500.11.6.1">kernel-livepatch-5_14_21-150500_13_58-rt-5-150500.11.6.1</FullProductName>
    </Branch>
    <Relationship ProductReference="kernel-livepatch-5_14_21-150500_13_58-rt-5-150500.11.6.1" RelationType="Default Component Of" RelatesToProductReference="SUSE Linux Enterprise Live Patching 15 SP5">
      <FullProductName ProductID="SUSE Linux Enterprise Live Patching 15 SP5:kernel-livepatch-5_14_21-150500_13_58-rt-5-150500.11.6.1">kernel-livepatch-5_14_21-150500_13_58-rt-5-150500.11.6.1 as a component of SUSE Linux Enterprise Live Patching 15 SP5</FullProductName>
    </Relationship>
  </ProductTree>
  <Vulnerability xmlns="http://www.icasi.org/CVRF/schema/vuln/1.1" Ordinal="1">
    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">In the Linux kernel, the following vulnerability has been resolved:

sch_cake: do not call cake_destroy() from cake_init()

qdiscs are not supposed to call their own destroy() method
from init(), because core stack already does that.

syzbot was able to trigger use after free:

DEBUG_LOCKS_WARN_ON(lock-&gt;magic != lock)
WARNING: CPU: 0 PID: 21902 at kernel/locking/mutex.c:586 __mutex_lock_common kernel/locking/mutex.c:586 [inline]
WARNING: CPU: 0 PID: 21902 at kernel/locking/mutex.c:586 __mutex_lock+0x9ec/0x12f0 kernel/locking/mutex.c:740
Modules linked in:
CPU: 0 PID: 21902 Comm: syz-executor189 Not tainted 5.16.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:586 [inline]
RIP: 0010:__mutex_lock+0x9ec/0x12f0 kernel/locking/mutex.c:740
Code: 08 84 d2 0f 85 19 08 00 00 8b 05 97 38 4b 04 85 c0 0f 85 27 f7 ff ff 48 c7 c6 20 00 ac 89 48 c7 c7 a0 fe ab 89 e8 bf 76 ba ff &lt;0f&gt; 0b e9 0d f7 ff ff 48 8b 44 24 40 48 8d b8 c8 08 00 00 48 89 f8
RSP: 0018:ffffc9000627f290 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88802315d700 RSI: ffffffff815f1db8 RDI: fffff52000c4fe44
RBP: ffff88818f28e000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815ebb5e R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffc9000627f458 R15: 0000000093c30000
FS:  0000555556abc400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fda689c3303 CR3: 000000001cfbb000 CR4: 0000000000350ef0
Call Trace:
 &lt;TASK&gt;
 tcf_chain0_head_change_cb_del+0x2e/0x3d0 net/sched/cls_api.c:810
 tcf_block_put_ext net/sched/cls_api.c:1381 [inline]
 tcf_block_put_ext net/sched/cls_api.c:1376 [inline]
 tcf_block_put+0xbc/0x130 net/sched/cls_api.c:1394
 cake_destroy+0x3f/0x80 net/sched/sch_cake.c:2695
 qdisc_create.constprop.0+0x9da/0x10f0 net/sched/sch_api.c:1293
 tc_modify_qdisc+0x4c5/0x1980 net/sched/sch_api.c:1660
 rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5571
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2496
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x904/0xdf0 net/netlink/af_netlink.c:1921
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:724
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f1bb06badb9
Code: Unable to access opcode bytes at RIP 0x7f1bb06bad8f.
RSP: 002b:00007fff3012a658 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f1bb06badb9
RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000003
R10: 0000000000000003 R11: 0000000000000246 R12: 00007fff3012a688
R13: 00007fff3012a6a0 R14: 00007fff3012a6e0 R15: 00000000000013c2
 &lt;/TASK&gt;</Note>
    </Notes>
    <CVE>CVE-2021-47598</CVE>
    <ProductStatuses>
      <Status Type="Fixed">
        <ProductID>SUSE Linux Enterprise Live Patching 15 SP5:kernel-livepatch-5_14_21-150500_13_58-rt-5-150500.11.6.1</ProductID>
      </Status>
    </ProductStatuses>
    <Threats>
      <Threat Type="Impact">
        <Description>important</Description>
      </Threat>
    </Threats>
    <Remediations>
      <Remediation Type="Vendor Fix">
        <Description xml:lang="en">To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
</Description>
        <URL>https://www.suse.com/support/update/announcement/2024/suse-su-20243833-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2021-47598.html</URL>
        <Description>CVE-2021-47598</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1226574</URL>
        <Description>SUSE Bug 1226574</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1227471</URL>
        <Description>SUSE Bug 1227471</Description>
      </Reference>
    </References>
  </Vulnerability>
  <Vulnerability xmlns="http://www.icasi.org/CVRF/schema/vuln/1.1" Ordinal="2">
    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">In the Linux kernel, the following vulnerability has been resolved:

smb: client: fix use-after-free bug in cifs_debug_data_proc_show()

Skip SMB sessions that are being teared down
(e.g. @ses-&gt;ses_status == SES_EXITING) in cifs_debug_data_proc_show()
to avoid use-after-free in @ses.

This fixes the following GPF when reading from /proc/fs/cifs/DebugData
while mounting and umounting

  [ 816.251274] general protection fault, probably for non-canonical
  address 0x6b6b6b6b6b6b6d81: 0000 [#1] PREEMPT SMP NOPTI
  ...
  [  816.260138] Call Trace:
  [  816.260329]  &lt;TASK&gt;
  [  816.260499]  ? die_addr+0x36/0x90
  [  816.260762]  ? exc_general_protection+0x1b3/0x410
  [  816.261126]  ? asm_exc_general_protection+0x26/0x30
  [  816.261502]  ? cifs_debug_tcon+0xbd/0x240 [cifs]
  [  816.261878]  ? cifs_debug_tcon+0xab/0x240 [cifs]
  [  816.262249]  cifs_debug_data_proc_show+0x516/0xdb0 [cifs]
  [  816.262689]  ? seq_read_iter+0x379/0x470
  [  816.262995]  seq_read_iter+0x118/0x470
  [  816.263291]  proc_reg_read_iter+0x53/0x90
  [  816.263596]  ? srso_alias_return_thunk+0x5/0x7f
  [  816.263945]  vfs_read+0x201/0x350
  [  816.264211]  ksys_read+0x75/0x100
  [  816.264472]  do_syscall_64+0x3f/0x90
  [  816.264750]  entry_SYSCALL_64_after_hwframe+0x6e/0xd8
  [  816.265135] RIP: 0033:0x7fd5e669d381</Note>
    </Notes>
    <CVE>CVE-2023-52752</CVE>
    <ProductStatuses>
      <Status Type="Fixed">
        <ProductID>SUSE Linux Enterprise Live Patching 15 SP5:kernel-livepatch-5_14_21-150500_13_58-rt-5-150500.11.6.1</ProductID>
      </Status>
    </ProductStatuses>
    <Threats>
      <Threat Type="Impact">
        <Description>important</Description>
      </Threat>
    </Threats>
    <Remediations>
      <Remediation Type="Vendor Fix">
        <Description xml:lang="en">To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
</Description>
        <URL>https://www.suse.com/support/update/announcement/2024/suse-su-20243833-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2023-52752.html</URL>
        <Description>CVE-2023-52752</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1225487</URL>
        <Description>SUSE Bug 1225487</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1225819</URL>
        <Description>SUSE Bug 1225819</Description>
      </Reference>
    </References>
  </Vulnerability>
  <Vulnerability xmlns="http://www.icasi.org/CVRF/schema/vuln/1.1" Ordinal="3">
    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">In the Linux kernel, the following vulnerability has been resolved:

hsr: Prevent use after free in prp_create_tagged_frame()

The prp_fill_rct() function can fail.  In that situation, it frees the
skb and returns NULL.  Meanwhile on the success path, it returns the
original skb.  So it's straight forward to fix bug by using the returned
value.</Note>
    </Notes>
    <CVE>CVE-2023-52846</CVE>
    <ProductStatuses>
      <Status Type="Fixed">
        <ProductID>SUSE Linux Enterprise Live Patching 15 SP5:kernel-livepatch-5_14_21-150500_13_58-rt-5-150500.11.6.1</ProductID>
      </Status>
    </ProductStatuses>
    <Threats>
      <Threat Type="Impact">
        <Description>moderate</Description>
      </Threat>
    </Threats>
    <Remediations>
      <Remediation Type="Vendor Fix">
        <Description xml:lang="en">To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
</Description>
        <URL>https://www.suse.com/support/update/announcement/2024/suse-su-20243833-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2023-52846.html</URL>
        <Description>CVE-2023-52846</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1225098</URL>
        <Description>SUSE Bug 1225098</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1225099</URL>
        <Description>SUSE Bug 1225099</Description>
      </Reference>
    </References>
  </Vulnerability>
  <Vulnerability xmlns="http://www.icasi.org/CVRF/schema/vuln/1.1" Ordinal="4">
    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">In the Linux kernel, the following vulnerability has been resolved:

af_unix: Fix garbage collector racing against connect()

Garbage collector does not take into account the risk of embryo getting
enqueued during the garbage collection. If such embryo has a peer that
carries SCM_RIGHTS, two consecutive passes of scan_children() may see a
different set of children. Leading to an incorrectly elevated inflight
count, and then a dangling pointer within the gc_inflight_list.

sockets are AF_UNIX/SOCK_STREAM
S is an unconnected socket
L is a listening in-flight socket bound to addr, not in fdtable
V's fd will be passed via sendmsg(), gets inflight count bumped

connect(S, addr)	sendmsg(S, [V]); close(V)	__unix_gc()
----------------	-------------------------	-----------

NS = unix_create1()
skb1 = sock_wmalloc(NS)
L = unix_find_other(addr)
unix_state_lock(L)
unix_peer(S) = NS
			// V count=1 inflight=0

 			NS = unix_peer(S)
 			skb2 = sock_alloc()
			skb_queue_tail(NS, skb2[V])

			// V became in-flight
			// V count=2 inflight=1

			close(V)

			// V count=1 inflight=1
			// GC candidate condition met

						for u in gc_inflight_list:
						  if (total_refs == inflight_refs)
						    add u to gc_candidates

						// gc_candidates={L, V}

						for u in gc_candidates:
						  scan_children(u, dec_inflight)

						// embryo (skb1) was not
						// reachable from L yet, so V's
						// inflight remains unchanged
__skb_queue_tail(L, skb1)
unix_state_unlock(L)
						for u in gc_candidates:
						  if (u.inflight)
						    scan_children(u, inc_inflight_move_tail)

						// V count=1 inflight=2 (!)

If there is a GC-candidate listening socket, lock/unlock its state. This
makes GC wait until the end of any ongoing connect() to that socket. After
flipping the lock, a possibly SCM-laden embryo is already enqueued. And if
there is another embryo coming, it can not possibly carry SCM_RIGHTS. At
this point, unix_inflight() can not happen because unix_gc_lock is already
taken. Inflight graph remains unaffected.</Note>
    </Notes>
    <CVE>CVE-2024-26923</CVE>
    <ProductStatuses>
      <Status Type="Fixed">
        <ProductID>SUSE Linux Enterprise Live Patching 15 SP5:kernel-livepatch-5_14_21-150500_13_58-rt-5-150500.11.6.1</ProductID>
      </Status>
    </ProductStatuses>
    <Threats>
      <Threat Type="Impact">
        <Description>moderate</Description>
      </Threat>
    </Threats>
    <Remediations>
      <Remediation Type="Vendor Fix">
        <Description xml:lang="en">To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
</Description>
        <URL>https://www.suse.com/support/update/announcement/2024/suse-su-20243833-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2024-26923.html</URL>
        <Description>CVE-2024-26923</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1223384</URL>
        <Description>SUSE Bug 1223384</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1223683</URL>
        <Description>SUSE Bug 1223683</Description>
      </Reference>
    </References>
  </Vulnerability>
  <Vulnerability xmlns="http://www.icasi.org/CVRF/schema/vuln/1.1" Ordinal="5">
    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">In the Linux kernel, the following vulnerability has been resolved:

gpiolib: cdev: Fix use after free in lineinfo_changed_notify

The use-after-free issue occurs as follows: when the GPIO chip device file
is being closed by invoking gpio_chrdev_release(), watched_lines is freed
by bitmap_free(), but the unregistration of lineinfo_changed_nb notifier
chain failed due to waiting write rwsem. Additionally, one of the GPIO
chip's lines is also in the release process and holds the notifier chain's
read rwsem. Consequently, a race condition leads to the use-after-free of
watched_lines.

Here is the typical stack when issue happened:

[free]
gpio_chrdev_release()
  --&gt; bitmap_free(cdev-&gt;watched_lines)                  &lt;-- freed
  --&gt; blocking_notifier_chain_unregister()
    --&gt; down_write(&amp;nh-&gt;rwsem)                          &lt;-- waiting rwsem
          --&gt; __down_write_common()
            --&gt; rwsem_down_write_slowpath()
                  --&gt; schedule_preempt_disabled()
                    --&gt; schedule()

[use]
st54spi_gpio_dev_release()
  --&gt; gpio_free()
    --&gt; gpiod_free()
      --&gt; gpiod_free_commit()
        --&gt; gpiod_line_state_notify()
          --&gt; blocking_notifier_call_chain()
            --&gt; down_read(&amp;nh-&gt;rwsem);                  &lt;-- held rwsem
            --&gt; notifier_call_chain()
              --&gt; lineinfo_changed_notify()
                --&gt; test_bit(xxxx, cdev-&gt;watched_lines) &lt;-- use after free

The side effect of the use-after-free issue is that a GPIO line event is
being generated for userspace where it shouldn't. However, since the chrdev
is being closed, userspace won't have the chance to read that event anyway.

To fix the issue, call the bitmap_free() function after the unregistration
of lineinfo_changed_nb notifier chain.</Note>
    </Notes>
    <CVE>CVE-2024-36899</CVE>
    <ProductStatuses>
      <Status Type="Fixed">
        <ProductID>SUSE Linux Enterprise Live Patching 15 SP5:kernel-livepatch-5_14_21-150500_13_58-rt-5-150500.11.6.1</ProductID>
      </Status>
    </ProductStatuses>
    <Threats>
      <Threat Type="Impact">
        <Description>moderate</Description>
      </Threat>
    </Threats>
    <Remediations>
      <Remediation Type="Vendor Fix">
        <Description xml:lang="en">To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
</Description>
        <URL>https://www.suse.com/support/update/announcement/2024/suse-su-20243833-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2024-36899.html</URL>
        <Description>CVE-2024-36899</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1225737</URL>
        <Description>SUSE Bug 1225737</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1225739</URL>
        <Description>SUSE Bug 1225739</Description>
      </Reference>
    </References>
  </Vulnerability>
  <Vulnerability xmlns="http://www.icasi.org/CVRF/schema/vuln/1.1" Ordinal="6">
    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">In the Linux kernel, the following vulnerability has been resolved:

bpf: Fix a potential use-after-free in bpf_link_free()

After commit 1a80dbcb2dba, bpf_link can be freed by
link-&gt;ops-&gt;dealloc_deferred, but the code still tests and uses
link-&gt;ops-&gt;dealloc afterward, which leads to a use-after-free as
reported by syzbot. Actually, one of them should be sufficient, so
just call one of them instead of both. Also add a WARN_ON() in case
of any problematic implementation.</Note>
    </Notes>
    <CVE>CVE-2024-40909</CVE>
    <ProductStatuses>
      <Status Type="Fixed">
        <ProductID>SUSE Linux Enterprise Live Patching 15 SP5:kernel-livepatch-5_14_21-150500_13_58-rt-5-150500.11.6.1</ProductID>
      </Status>
    </ProductStatuses>
    <Threats>
      <Threat Type="Impact">
        <Description>important</Description>
      </Threat>
    </Threats>
    <Remediations>
      <Remediation Type="Vendor Fix">
        <Description xml:lang="en">To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
</Description>
        <URL>https://www.suse.com/support/update/announcement/2024/suse-su-20243833-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2024-40909.html</URL>
        <Description>CVE-2024-40909</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1227798</URL>
        <Description>SUSE Bug 1227798</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1228349</URL>
        <Description>SUSE Bug 1228349</Description>
      </Reference>
    </References>
  </Vulnerability>
  <Vulnerability xmlns="http://www.icasi.org/CVRF/schema/vuln/1.1" Ordinal="7">
    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">In the Linux kernel, the following vulnerability has been resolved:

net: do not leave a dangling sk pointer, when socket creation fails

It is possible to trigger a use-after-free by:
  * attaching an fentry probe to __sock_release() and the probe calling the
    bpf_get_socket_cookie() helper
  * running traceroute -I 1.1.1.1 on a freshly booted VM

A KASAN enabled kernel will log something like below (decoded and stripped):
==================================================================
BUG: KASAN: slab-use-after-free in __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29)
Read of size 8 at addr ffff888007110dd8 by task traceroute/299

CPU: 2 PID: 299 Comm: traceroute Tainted: G            E      6.10.0-rc2+ #2
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 &lt;TASK&gt;
dump_stack_lvl (lib/dump_stack.c:117 (discriminator 1))
print_report (mm/kasan/report.c:378 mm/kasan/report.c:488)
? __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29)
kasan_report (mm/kasan/report.c:603)
? __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29)
kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189)
__sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29)
bpf_get_socket_ptr_cookie (./arch/x86/include/asm/preempt.h:94 ./include/linux/sock_diag.h:42 net/core/filter.c:5094 net/core/filter.c:5092)
bpf_prog_875642cf11f1d139___sock_release+0x6e/0x8e
bpf_trampoline_6442506592+0x47/0xaf
__sock_release (net/socket.c:652)
__sock_create (net/socket.c:1601)
...
Allocated by task 299 on cpu 2 at 78.328492s:
kasan_save_stack (mm/kasan/common.c:48)
kasan_save_track (mm/kasan/common.c:68)
__kasan_slab_alloc (mm/kasan/common.c:312 mm/kasan/common.c:338)
kmem_cache_alloc_noprof (mm/slub.c:3941 mm/slub.c:4000 mm/slub.c:4007)
sk_prot_alloc (net/core/sock.c:2075)
sk_alloc (net/core/sock.c:2134)
inet_create (net/ipv4/af_inet.c:327 net/ipv4/af_inet.c:252)
__sock_create (net/socket.c:1572)
__sys_socket (net/socket.c:1660 net/socket.c:1644 net/socket.c:1706)
__x64_sys_socket (net/socket.c:1718)
do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)
entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)

Freed by task 299 on cpu 2 at 78.328502s:
kasan_save_stack (mm/kasan/common.c:48)
kasan_save_track (mm/kasan/common.c:68)
kasan_save_free_info (mm/kasan/generic.c:582)
poison_slab_object (mm/kasan/common.c:242)
__kasan_slab_free (mm/kasan/common.c:256)
kmem_cache_free (mm/slub.c:4437 mm/slub.c:4511)
__sk_destruct (net/core/sock.c:2117 net/core/sock.c:2208)
inet_create (net/ipv4/af_inet.c:397 net/ipv4/af_inet.c:252)
__sock_create (net/socket.c:1572)
__sys_socket (net/socket.c:1660 net/socket.c:1644 net/socket.c:1706)
__x64_sys_socket (net/socket.c:1718)
do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)
entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)

Fix this by clearing the struct socket reference in sk_common_release() to cover
all protocol families create functions, which may already attached the
reference to the sk object with sock_init_data().</Note>
    </Notes>
    <CVE>CVE-2024-40954</CVE>
    <ProductStatuses>
      <Status Type="Fixed">
        <ProductID>SUSE Linux Enterprise Live Patching 15 SP5:kernel-livepatch-5_14_21-150500_13_58-rt-5-150500.11.6.1</ProductID>
      </Status>
    </ProductStatuses>
    <Threats>
      <Threat Type="Impact">
        <Description>moderate</Description>
      </Threat>
    </Threats>
    <Remediations>
      <Remediation Type="Vendor Fix">
        <Description xml:lang="en">To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
</Description>
        <URL>https://www.suse.com/support/update/announcement/2024/suse-su-20243833-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2024-40954.html</URL>
        <Description>CVE-2024-40954</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1227808</URL>
        <Description>SUSE Bug 1227808</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1228786</URL>
        <Description>SUSE Bug 1228786</Description>
      </Reference>
    </References>
  </Vulnerability>
  <Vulnerability xmlns="http://www.icasi.org/CVRF/schema/vuln/1.1" Ordinal="8">
    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">In the Linux kernel, the following vulnerability has been resolved:

hfsplus: fix uninit-value in copy_name

[syzbot reported]
BUG: KMSAN: uninit-value in sized_strscpy+0xc4/0x160
 sized_strscpy+0xc4/0x160
 copy_name+0x2af/0x320 fs/hfsplus/xattr.c:411
 hfsplus_listxattr+0x11e9/0x1a50 fs/hfsplus/xattr.c:750
 vfs_listxattr fs/xattr.c:493 [inline]
 listxattr+0x1f3/0x6b0 fs/xattr.c:840
 path_listxattr fs/xattr.c:864 [inline]
 __do_sys_listxattr fs/xattr.c:876 [inline]
 __se_sys_listxattr fs/xattr.c:873 [inline]
 __x64_sys_listxattr+0x16b/0x2f0 fs/xattr.c:873
 x64_sys_call+0x2ba0/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:195
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:3877 [inline]
 slab_alloc_node mm/slub.c:3918 [inline]
 kmalloc_trace+0x57b/0xbe0 mm/slub.c:4065
 kmalloc include/linux/slab.h:628 [inline]
 hfsplus_listxattr+0x4cc/0x1a50 fs/hfsplus/xattr.c:699
 vfs_listxattr fs/xattr.c:493 [inline]
 listxattr+0x1f3/0x6b0 fs/xattr.c:840
 path_listxattr fs/xattr.c:864 [inline]
 __do_sys_listxattr fs/xattr.c:876 [inline]
 __se_sys_listxattr fs/xattr.c:873 [inline]
 __x64_sys_listxattr+0x16b/0x2f0 fs/xattr.c:873
 x64_sys_call+0x2ba0/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:195
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
[Fix]
When allocating memory to strbuf, initialize memory to 0.</Note>
    </Notes>
    <CVE>CVE-2024-41059</CVE>
    <ProductStatuses>
      <Status Type="Fixed">
        <ProductID>SUSE Linux Enterprise Live Patching 15 SP5:kernel-livepatch-5_14_21-150500_13_58-rt-5-150500.11.6.1</ProductID>
      </Status>
    </ProductStatuses>
    <Threats>
      <Threat Type="Impact">
        <Description>important</Description>
      </Threat>
    </Threats>
    <Remediations>
      <Remediation Type="Vendor Fix">
        <Description xml:lang="en">To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
</Description>
        <URL>https://www.suse.com/support/update/announcement/2024/suse-su-20243833-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2024-41059.html</URL>
        <Description>CVE-2024-41059</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1228561</URL>
        <Description>SUSE Bug 1228561</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1228573</URL>
        <Description>SUSE Bug 1228573</Description>
      </Reference>
    </References>
  </Vulnerability>
</cvrfdoc>
