Security update for the Linux Kernel RT (Live Patch 0 for SLE 15 SP6) SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2025:02821-1 Final 1 1 2025-08-16T06:04:35Z current 2025-08-16T06:04:35Z 2025-08-16T06:04:35Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for the Linux Kernel RT (Live Patch 0 for SLE 15 SP6) This update for the Linux Kernel 6.4.0-150600_8 fixes several issues. The following security issues were fixed: - CVE-2025-38494: HID: core: do not bypass hid_hw_raw_request (bsc#1247350). - CVE-2025-38495: HID: core: ensure the allocated report buffer can contain the reserved report ID (bsc#1247351). - CVE-2024-36972: af_unix: update unix_sk(sk)->oob_skb under sk_receive_queue lock (bsc#1245989). - CVE-2025-38079: crypto: algif_hash - fix double free in hash_accept (bsc#1245218). - CVE-2025-38083: net_sched: prio: fix a race in prio_tune() (bsc#1245350). - CVE-2024-36978: net: sched: sch_multiq: fix possible OOB write in multiq_tune() (bsc#1244631). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2025-2821,SUSE-SLE-Module-Live-Patching-15-SP6-2025-2821 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2025/suse-su-202502821-1/ Link for SUSE-SU-2025:02821-1 https://lists.suse.com/pipermail/sle-updates/2025-August/041240.html E-Mail link for SUSE-SU-2025:02821-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1244631 SUSE Bug 1244631 https://bugzilla.suse.com/1245218 SUSE Bug 1245218 https://bugzilla.suse.com/1245350 SUSE Bug 1245350 https://bugzilla.suse.com/1245989 SUSE Bug 1245989 https://bugzilla.suse.com/1247350 SUSE Bug 1247350 https://bugzilla.suse.com/1247351 SUSE Bug 1247351 https://www.suse.com/security/cve/CVE-2024-36972/ SUSE CVE CVE-2024-36972 page https://www.suse.com/security/cve/CVE-2024-36978/ SUSE CVE CVE-2024-36978 page https://www.suse.com/security/cve/CVE-2025-38079/ SUSE CVE CVE-2025-38079 page https://www.suse.com/security/cve/CVE-2025-38083/ SUSE CVE CVE-2025-38083 page https://www.suse.com/security/cve/CVE-2025-38494/ SUSE CVE CVE-2025-38494 page https://www.suse.com/security/cve/CVE-2025-38495/ SUSE CVE CVE-2025-38495 page SUSE Linux Enterprise Live Patching 15 SP6 kernel-livepatch-6_4_0-150600_8-rt-20-150600.3.1 kernel-livepatch-6_4_0-150600_8-rt-20-150600.3.1 as a component of SUSE Linux Enterprise Live Patching 15 SP6 In the Linux kernel, the following vulnerability has been resolved: af_unix: Update unix_sk(sk)->oob_skb under sk_receive_queue lock. Billy Jheng Bing-Jhong reported a race between __unix_gc() and queue_oob(). __unix_gc() tries to garbage-collect close()d inflight sockets, and then if the socket has MSG_OOB in unix_sk(sk)->oob_skb, GC will drop the reference and set NULL to it locklessly. However, the peer socket still can send MSG_OOB message and queue_oob() can update unix_sk(sk)->oob_skb concurrently, leading NULL pointer dereference. [0] To fix the issue, let's update unix_sk(sk)->oob_skb under the sk_receive_queue's lock and take it everywhere we touch oob_skb. Note that we defer kfree_skb() in manage_oob() to silence lockdep false-positive (See [1]). [0]: BUG: kernel NULL pointer dereference, address: 0000000000000008 PF: supervisor write access in kernel mode PF: error_code(0x0002) - not-present page PGD 8000000009f5e067 P4D 8000000009f5e067 PUD 9f5d067 PMD 0 Oops: 0002 [#1] PREEMPT SMP PTI CPU: 3 PID: 50 Comm: kworker/3:1 Not tainted 6.9.0-rc5-00191-gd091e579b864 #110 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 Workqueue: events delayed_fput RIP: 0010:skb_dequeue (./include/linux/skbuff.h:2386 ./include/linux/skbuff.h:2402 net/core/skbuff.c:3847) Code: 39 e3 74 3e 8b 43 10 48 89 ef 83 e8 01 89 43 10 49 8b 44 24 08 49 c7 44 24 08 00 00 00 00 49 8b 14 24 49 c7 04 24 00 00 00 00 <48> 89 42 08 48 89 10 e8 e7 c5 42 00 4c 89 e0 5b 5d 41 5c c3 cc cc RSP: 0018:ffffc900001bfd48 EFLAGS: 00000002 RAX: 0000000000000000 RBX: ffff8880088f5ae8 RCX: 00000000361289f9 RDX: 0000000000000000 RSI: 0000000000000206 RDI: ffff8880088f5b00 RBP: ffff8880088f5b00 R08: 0000000000080000 R09: 0000000000000001 R10: 0000000000000003 R11: 0000000000000001 R12: ffff8880056b6a00 R13: ffff8880088f5280 R14: 0000000000000001 R15: ffff8880088f5a80 FS: 0000000000000000(0000) GS:ffff88807dd80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000008 CR3: 0000000006314000 CR4: 00000000007506f0 PKRU: 55555554 Call Trace: <TASK> unix_release_sock (net/unix/af_unix.c:654) unix_release (net/unix/af_unix.c:1050) __sock_release (net/socket.c:660) sock_close (net/socket.c:1423) __fput (fs/file_table.c:423) delayed_fput (fs/file_table.c:444 (discriminator 3)) process_one_work (kernel/workqueue.c:3259) worker_thread (kernel/workqueue.c:3329 kernel/workqueue.c:3416) kthread (kernel/kthread.c:388) ret_from_fork (arch/x86/kernel/process.c:153) ret_from_fork_asm (arch/x86/entry/entry_64.S:257) </TASK> Modules linked in: CR2: 0000000000000008 CVE-2024-36972 SUSE Linux Enterprise Live Patching 15 SP6:kernel-livepatch-6_4_0-150600_8-rt-20-150600.3.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-202502821-1/ https://www.suse.com/security/cve/CVE-2024-36972.html CVE-2024-36972 https://bugzilla.suse.com/1226163 SUSE Bug 1226163 https://bugzilla.suse.com/1245989 SUSE Bug 1245989 In the Linux kernel, the following vulnerability has been resolved: net: sched: sch_multiq: fix possible OOB write in multiq_tune() q->bands will be assigned to qopt->bands to execute subsequent code logic after kmalloc. So the old q->bands should not be used in kmalloc. Otherwise, an out-of-bounds write will occur. CVE-2024-36978 SUSE Linux Enterprise Live Patching 15 SP6:kernel-livepatch-6_4_0-150600_8-rt-20-150600.3.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-202502821-1/ https://www.suse.com/security/cve/CVE-2024-36978.html CVE-2024-36978 https://bugzilla.suse.com/1226514 SUSE Bug 1226514 https://bugzilla.suse.com/1244631 SUSE Bug 1244631 In the Linux kernel, the following vulnerability has been resolved: crypto: algif_hash - fix double free in hash_accept If accept(2) is called on socket type algif_hash with MSG_MORE flag set and crypto_ahash_import fails, sk2 is freed. However, it is also freed in af_alg_release, leading to slab-use-after-free error. CVE-2025-38079 SUSE Linux Enterprise Live Patching 15 SP6:kernel-livepatch-6_4_0-150600_8-rt-20-150600.3.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-202502821-1/ https://www.suse.com/security/cve/CVE-2025-38079.html CVE-2025-38079 https://bugzilla.suse.com/1245217 SUSE Bug 1245217 https://bugzilla.suse.com/1245218 SUSE Bug 1245218 In the Linux kernel, the following vulnerability has been resolved: net_sched: prio: fix a race in prio_tune() Gerrard Tai reported a race condition in PRIO, whenever SFQ perturb timer fires at the wrong time. The race is as follows: CPU 0 CPU 1 [1]: lock root [2]: qdisc_tree_flush_backlog() [3]: unlock root | | [5]: lock root | [6]: rehash | [7]: qdisc_tree_reduce_backlog() | [4]: qdisc_put() This can be abused to underflow a parent's qlen. Calling qdisc_purge_queue() instead of qdisc_tree_flush_backlog() should fix the race, because all packets will be purged from the qdisc before releasing the lock. CVE-2025-38083 SUSE Linux Enterprise Live Patching 15 SP6:kernel-livepatch-6_4_0-150600_8-rt-20-150600.3.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-202502821-1/ https://www.suse.com/security/cve/CVE-2025-38083.html CVE-2025-38083 https://bugzilla.suse.com/1245183 SUSE Bug 1245183 https://bugzilla.suse.com/1245350 SUSE Bug 1245350 In the Linux kernel, the following vulnerability has been resolved: HID: core: do not bypass hid_hw_raw_request hid_hw_raw_request() is actually useful to ensure the provided buffer and length are valid. Directly calling in the low level transport driver function bypassed those checks and allowed invalid paramto be used. CVE-2025-38494 SUSE Linux Enterprise Live Patching 15 SP6:kernel-livepatch-6_4_0-150600_8-rt-20-150600.3.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-202502821-1/ https://www.suse.com/security/cve/CVE-2025-38494.html CVE-2025-38494 https://bugzilla.suse.com/1247349 SUSE Bug 1247349 https://bugzilla.suse.com/1247350 SUSE Bug 1247350 In the Linux kernel, the following vulnerability has been resolved: HID: core: ensure the allocated report buffer can contain the reserved report ID When the report ID is not used, the low level transport drivers expect the first byte to be 0. However, currently the allocated buffer not account for that extra byte, meaning that instead of having 8 guaranteed bytes for implement to be working, we only have 7. CVE-2025-38495 SUSE Linux Enterprise Live Patching 15 SP6:kernel-livepatch-6_4_0-150600_8-rt-20-150600.3.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2025/suse-su-202502821-1/ https://www.suse.com/security/cve/CVE-2025-38495.html CVE-2025-38495 https://bugzilla.suse.com/1247348 SUSE Bug 1247348 https://bugzilla.suse.com/1247351 SUSE Bug 1247351