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Vulnerabilities
CVE-2023-54265
CVE-2023-54265
In the Linux kernel, the following vulnerability has been resolved: ipv6: Fix an uninit variable access bug in __ip6_make_skb() Syzbot reported a bug as following: ===================================================== BUG: KMSAN: uninit-value in arch_atomic64_inc arch/x86/include/asm/atomic64_64.h:88 [inline] BUG: KMSAN: uninit-value in arch_atomic_long_inc include/linux/atomic/atomic-long.h:161 [inline] BUG: KMSAN: uninit-value in atomic_long_inc include/linux/atomic/atomic-instrumented.h:1429 [inline] BUG: KMSAN: uninit-value in __ip6_make_skb+0x2f37/0x30f0 net/ipv6/ip6_output.c:1956 arch_atomic64_inc arch/x86/include/asm/atomic64_64.h:88 [inline] arch_atomic_long_inc include/linux/atomic/atomic-long.h:161 [inline] atomic_long_inc include/linux/atomic/atomic-instrumented.h:1429 [inline] __ip6_make_skb+0x2f37/0x30f0 net/ipv6/ip6_output.c:1956 ip6_finish_skb include/net/ipv6.h:1122 [inline] ip6_push_pending_frames+0x10e/0x550 net/ipv6/ip6_output.c:1987 rawv6_push_pending_frames+0xb12/0xb90 net/ipv6/raw.c:579 rawv6_sendmsg+0x297e/0x2e60 net/ipv6/raw.c:922 inet_sendmsg+0x101/0x180 net/ipv4/af_inet.c:827 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0xa8e/0xe70 net/socket.c:2476 ___sys_sendmsg+0x2a1/0x3f0 net/socket.c:2530 __sys_sendmsg net/socket.c:2559 [inline] __do_sys_sendmsg net/socket.c:2568 [inline] __se_sys_sendmsg net/socket.c:2566 [inline] __x64_sys_sendmsg+0x367/0x540 net/socket.c:2566 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Uninit was created at: slab_post_alloc_hook mm/slab.h:766 [inline] slab_alloc_node mm/slub.c:3452 [inline] __kmem_cache_alloc_node+0x71f/0xce0 mm/slub.c:3491 __do_kmalloc_node mm/slab_common.c:967 [inline] __kmalloc_node_track_caller+0x114/0x3b0 mm/slab_common.c:988 kmalloc_reserve net/core/skbuff.c:492 [inline] __alloc_skb+0x3af/0x8f0 net/core/skbuff.c:565 alloc_skb include/linux/skbuff.h:1270 [inline] __ip6_append_data+0x51c1/0x6bb0 net/ipv6/ip6_output.c:1684 ip6_append_data+0x411/0x580 net/ipv6/ip6_output.c:1854 rawv6_sendmsg+0x2882/0x2e60 net/ipv6/raw.c:915 inet_sendmsg+0x101/0x180 net/ipv4/af_inet.c:827 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0xa8e/0xe70 net/socket.c:2476 ___sys_sendmsg+0x2a1/0x3f0 net/socket.c:2530 __sys_sendmsg net/socket.c:2559 [inline] __do_sys_sendmsg net/socket.c:2568 [inline] __se_sys_sendmsg net/socket.c:2566 [inline] __x64_sys_sendmsg+0x367/0x540 net/socket.c:2566 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd It is because icmp6hdr does not in skb linear region under the scenario of SOCK_RAW socket. Access icmp6_hdr(skb)->icmp6_type directly will trigger the uninit variable access bug. Use a local variable icmp6_type to carry the correct value in different scenarios.
Components Impacted
Components Impacted
Security Details
Security Details
Sonatype Research
Sonatype Research
Published Dec 31, 2025
https://lore.kernel.org/linux-cve-announce/2025123059-CVE-2023-54265-02a6@gregkh/
CVSS Score
Medium
5.1
Ecosystem
Package
Version
Ecosystem
Package
Version
rpm
kernel
2.6.32-131.0.15.el6
rpm
kernel
2.6.32-131.12.1.el6
rpm
kernel
2.6.32-131.17.1.el6
rpm
kernel
2.6.32-131.2.1.el6
rpm
kernel
2.6.32-131.21.1.el6
rpm
kernel
2.6.32-131.4.1.el6
rpm
kernel
2.6.32-131.6.1.el6
rpm
kernel
2.6.32-220.13.1.el6
rpm
kernel
2.6.32-220.17.1.el6
rpm
kernel
2.6.32-220.2.1.el6
rpm
kernel
2.6.32-220.23.1.el6
rpm
kernel
2.6.32-220.4.1.el6
rpm
kernel
2.6.32-220.4.2.el6
rpm
kernel
2.6.32-220.7.1.el6
rpm
kernel
2.6.32-220.el6
rpm
kernel
2.6.32-279.1.1.el6
rpm
kernel
2.6.32-279.11.1.el6
rpm
kernel
2.6.32-279.14.1.el6
rpm
kernel
2.6.32-279.19.1.el6
rpm
kernel
2.6.32-279.2.1.el6
rpm
kernel
2.6.32-279.22.1.el6
rpm
kernel
2.6.32-279.5.1.el6
rpm
kernel
2.6.32-279.5.2.el6
rpm
kernel
2.6.32-279.9.1.el6
rpm
kernel
2.6.32-279.el6
rpm
kernel
2.6.32-358.0.1.el6
rpm
kernel
2.6.32-358.11.1.el6
rpm
kernel
2.6.32-358.14.1.el6
rpm
kernel
2.6.32-358.18.1.el6
rpm
kernel
2.6.32-358.2.1.el6
rpm
kernel
2.6.32-358.23.2.el6
rpm
kernel
2.6.32-358.6.1.el6
rpm
kernel
2.6.32-358.6.2.el6
rpm
kernel
2.6.32-358.el6
rpm
kernel
2.6.32-431.1.2.el6
rpm
kernel
2.6.32-431.11.2.el6
rpm
kernel
2.6.32-431.17.1.el6
rpm
kernel
2.6.32-431.20.3.el6
rpm
kernel
2.6.32-431.20.5.el6
rpm
kernel
2.6.32-431.23.3.el6
rpm
kernel
2.6.32-431.29.2.el6
rpm
kernel
2.6.32-431.3.1.el6
rpm
kernel
2.6.32-431.5.1.el6
rpm
kernel
2.6.32-431.el6
rpm
kernel
2.6.32-504.1.3.el6
rpm
kernel
2.6.32-504.12.2.el6
rpm
kernel
2.6.32-504.16.2.el6
rpm
kernel
2.6.32-504.23.4.el6
rpm
kernel
2.6.32-504.3.3.el6
rpm
kernel
2.6.32-504.30.3.el6
1-50 of 686
CVE-2023-54265 | Components Impacted | Sonatype Guide | Sonatype Guide
