Security update for the Linux Kernel (Live Patch 47 for SLE 15 SP3) SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2025:0245-1 Final 1 1 2025-01-27T12:03:57Z current 2025-01-27T12:03:57Z 2025-01-27T12:03:57Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for the Linux Kernel (Live Patch 47 for SLE 15 SP3) This update for the Linux Kernel 5.3.18-150300_59_170 fixes several issues. The following security issues were fixed: - CVE-2024-36971: Fixed __dst_negative_advice() race (bsc#1226324). - CVE-2024-50264: vsock/virtio: Initialization of the dangling pointer occurring in vsk->trans (bsc#1233712). - CVE-2022-48956: ipv6: avoid use-after-free in ip6_fragment() (bsc#1232637). - CVE-2024-43861: Fix memory leak for not ip packets (bsc#1229553). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). SUSE-2025-245,SUSE-SLE-Module-Live-Patching-15-SP3-2025-245 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-20250245-1/ Link for SUSE-SU-2025:0245-1 https://lists.suse.com/pipermail/sle-security-updates/2025-January/020221.html E-Mail link for SUSE-SU-2025:0245-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1226324 SUSE Bug 1226324 https://bugzilla.suse.com/1229553 SUSE Bug 1229553 https://bugzilla.suse.com/1232637 SUSE Bug 1232637 https://bugzilla.suse.com/1233712 SUSE Bug 1233712 https://www.suse.com/security/cve/CVE-2022-48956/ SUSE CVE CVE-2022-48956 page https://www.suse.com/security/cve/CVE-2024-36971/ SUSE CVE CVE-2024-36971 page https://www.suse.com/security/cve/CVE-2024-43861/ SUSE CVE CVE-2024-43861 page https://www.suse.com/security/cve/CVE-2024-50264/ SUSE CVE CVE-2024-50264 page SUSE Linux Enterprise Live Patching 15 SP3 kernel-livepatch-5_3_18-150300_59_170-default-4-150300.7.6.1 kernel-livepatch-5_3_18-150300_59_170-preempt-4-150300.7.6.1 kernel-livepatch-5_3_18-150300_59_170-default-4-150300.7.6.1 as a component of SUSE Linux Enterprise Live Patching 15 SP3 In the Linux kernel, the following vulnerability has been resolved: ipv6: avoid use-after-free in ip6_fragment() Blamed commit claimed rcu_read_lock() was held by ip6_fragment() callers. It seems to not be always true, at least for UDP stack. syzbot reported: BUG: KASAN: use-after-free in ip6_dst_idev include/net/ip6_fib.h:245 [inline] BUG: KASAN: use-after-free in ip6_fragment+0x2724/0x2770 net/ipv6/ip6_output.c:951 Read of size 8 at addr ffff88801d403e80 by task syz-executor.3/7618 CPU: 1 PID: 7618 Comm: syz-executor.3 Not tainted 6.1.0-rc6-syzkaller-00012-g4312098baf37 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x15e/0x45d mm/kasan/report.c:395 kasan_report+0xbf/0x1f0 mm/kasan/report.c:495 ip6_dst_idev include/net/ip6_fib.h:245 [inline] ip6_fragment+0x2724/0x2770 net/ipv6/ip6_output.c:951 __ip6_finish_output net/ipv6/ip6_output.c:193 [inline] ip6_finish_output+0x9a3/0x1170 net/ipv6/ip6_output.c:206 NF_HOOK_COND include/linux/netfilter.h:291 [inline] ip6_output+0x1f1/0x540 net/ipv6/ip6_output.c:227 dst_output include/net/dst.h:445 [inline] ip6_local_out+0xb3/0x1a0 net/ipv6/output_core.c:161 ip6_send_skb+0xbb/0x340 net/ipv6/ip6_output.c:1966 udp_v6_send_skb+0x82a/0x18a0 net/ipv6/udp.c:1286 udp_v6_push_pending_frames+0x140/0x200 net/ipv6/udp.c:1313 udpv6_sendmsg+0x18da/0x2c80 net/ipv6/udp.c:1606 inet6_sendmsg+0x9d/0xe0 net/ipv6/af_inet6.c:665 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xd3/0x120 net/socket.c:734 sock_write_iter+0x295/0x3d0 net/socket.c:1108 call_write_iter include/linux/fs.h:2191 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x9ed/0xdd0 fs/read_write.c:584 ksys_write+0x1ec/0x250 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fde3588c0d9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fde365b6168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fde359ac050 RCX: 00007fde3588c0d9 RDX: 000000000000ffdc RSI: 00000000200000c0 RDI: 000000000000000a RBP: 00007fde358e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fde35acfb1f R14: 00007fde365b6300 R15: 0000000000022000 </TASK> Allocated by task 7618: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x82/0x90 mm/kasan/common.c:325 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slab.h:737 [inline] slab_alloc_node mm/slub.c:3398 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc+0x2b4/0x3d0 mm/slub.c:3422 dst_alloc+0x14a/0x1f0 net/core/dst.c:92 ip6_dst_alloc+0x32/0xa0 net/ipv6/route.c:344 ip6_rt_pcpu_alloc net/ipv6/route.c:1369 [inline] rt6_make_pcpu_route net/ipv6/route.c:1417 [inline] ip6_pol_route+0x901/0x1190 net/ipv6/route.c:2254 pol_lookup_func include/net/ip6_fib.h:582 [inline] fib6_rule_lookup+0x52e/0x6f0 net/ipv6/fib6_rules.c:121 ip6_route_output_flags_noref+0x2e6/0x380 net/ipv6/route.c:2625 ip6_route_output_flags+0x76/0x320 net/ipv6/route.c:2638 ip6_route_output include/net/ip6_route.h:98 [inline] ip6_dst_lookup_tail+0x5ab/0x1620 net/ipv6/ip6_output.c:1092 ip6_dst_lookup_flow+0x90/0x1d0 net/ipv6/ip6_output.c:1222 ip6_sk_dst_lookup_flow+0x553/0x980 net/ipv6/ip6_output.c:1260 udpv6_sendmsg+0x151d/0x2c80 net/ipv6/udp.c:1554 inet6_sendmsg+0x9d/0xe0 net/ipv6/af_inet6.c:665 sock_sendmsg_nosec n ---truncated--- CVE-2022-48956 SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-150300_59_170-default-4-150300.7.6.1 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-20250245-1/ https://www.suse.com/security/cve/CVE-2022-48956.html CVE-2022-48956 https://bugzilla.suse.com/1231893 SUSE Bug 1231893 https://bugzilla.suse.com/1232799 SUSE Bug 1232799 In the Linux kernel, the following vulnerability has been resolved: net: fix __dst_negative_advice() race __dst_negative_advice() does not enforce proper RCU rules when sk->dst_cache must be cleared, leading to possible UAF. RCU rules are that we must first clear sk->sk_dst_cache, then call dst_release(old_dst). Note that sk_dst_reset(sk) is implementing this protocol correctly, while __dst_negative_advice() uses the wrong order. Given that ip6_negative_advice() has special logic against RTF_CACHE, this means each of the three ->negative_advice() existing methods must perform the sk_dst_reset() themselves. Note the check against NULL dst is centralized in __dst_negative_advice(), there is no need to duplicate it in various callbacks. Many thanks to Clement Lecigne for tracking this issue. This old bug became visible after the blamed commit, using UDP sockets. CVE-2024-36971 SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-150300_59_170-default-4-150300.7.6.1 moderate 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-20250245-1/ https://www.suse.com/security/cve/CVE-2024-36971.html CVE-2024-36971 https://bugzilla.suse.com/1226145 SUSE Bug 1226145 https://bugzilla.suse.com/1226324 SUSE Bug 1226324 In the Linux kernel, the following vulnerability has been resolved: net: usb: qmi_wwan: fix memory leak for not ip packets Free the unused skb when not ip packets arrive. CVE-2024-43861 SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-150300_59_170-default-4-150300.7.6.1 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-20250245-1/ https://www.suse.com/security/cve/CVE-2024-43861.html CVE-2024-43861 https://bugzilla.suse.com/1229500 SUSE Bug 1229500 https://bugzilla.suse.com/1229553 SUSE Bug 1229553 In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: Initialization of the dangling pointer occurring in vsk->trans During loopback communication, a dangling pointer can be created in vsk->trans, potentially leading to a Use-After-Free condition. This issue is resolved by initializing vsk->trans to NULL. CVE-2024-50264 SUSE Linux Enterprise Live Patching 15 SP3:kernel-livepatch-5_3_18-150300_59_170-default-4-150300.7.6.1 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-20250245-1/ https://www.suse.com/security/cve/CVE-2024-50264.html CVE-2024-50264 https://bugzilla.suse.com/1233453 SUSE Bug 1233453 https://bugzilla.suse.com/1233712 SUSE Bug 1233712