🛡️ AZL-74706 — kernel

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

CVE-2025-39812 affecting package kernel for versions less than 5.15.200.1-1

In the Linux kernel, the following vulnerability has been resolved:

sctp: initialize more fields in sctp_v6_from_sk()

syzbot found that sin6_scope_id was not properly initialized,

leading to undefined behavior.

Clear sin6_scope_id and sin6_flowinfo.

BUG: KMSAN: uninit-value in __sctp_v6_cmp_addr+0x887/0x8c0 net/sctp/ipv6.c:649

__sctp_v6_cmp_addr+0x887/0x8c0 net/sctp/ipv6.c:649

sctp_inet6_cmp_addr+0x4f2/0x510 net/sctp/ipv6.c:983

sctp_bind_addr_conflict+0x22a/0x3b0 net/sctp/bind_addr.c:390

sctp_get_port_local+0x21eb/0x2440 net/sctp/socket.c:8452

sctp_get_port net/sctp/socket.c:8523 [inline]

sctp_listen_start net/sctp/socket.c:8567 [inline]

sctp_inet_listen+0x710/0xfd0 net/sctp/socket.c:8636

__sys_listen_socket net/socket.c:1912 [inline]

__sys_listen net/socket.c:1927 [inline]

__do_sys_listen net/socket.c:1932 [inline]

__se_sys_listen net/socket.c:1930 [inline]

__x64_sys_listen+0x343/0x4c0 net/socket.c:1930

x64_sys_call+0x271d/0x3e20 arch/x86/include/generated/asm/syscalls_64.h:51

do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]

do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94

entry_SYSCALL_64_after_hwframe+0x77/0x7f

Local variable addr.i.i created at:

sctp_get_port net/sctp/socket.c:8515 [inline]

sctp_listen_start net/sctp/socket.c:8567 [inline]

sctp_inet_listen+0x650/0xfd0 net/sctp/socket.c:8636

__sys_listen_socket net/socket.c:1912 [inline]

__sys_listen net/socket.c:1927 [inline]

__do_sys_listen net/socket.c:1932 [inline]

__se_sys_listen net/socket.c:1930 [inline]

__x64_sys_listen+0x343/0x4c0 net/socket.c:1930

Affected software

AZL-74706 is recorded against 1 package.

  • kernel (fixed in 5.15.200.1-1)

Timeline and source

Published on 16 September 2025 and last revised on 21 April 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Web)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2025-09-16
Updated 2026-08-12
Modified 2026-04-21
Fix URL N/A

Affected Packages

Software From version Fixed in
kernel — 5.15.200.1-1

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