CVE-2025-39812 — Use of Uninitialized Resource in Linux
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 96.43%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedSep 16
Latest updateApr 9
Description
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
sct…
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6
Affected Packages3 packages
▶CVEListV5linux/linux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 — 45e4b36593edffb7bbee5828ae820bc10a9fa0f3+8
Also affects: Debian Linux 11.0
Patches
🔴Vulnerability Details
3OSV▶
CVE-2025-39812: 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↗2025-09-16
GHSA▶
GHSA-39p8-x6c9-fprr: In the Linux kernel, the following vulnerability has been resolved:
sctp: initialize more fields in sctp_v6_from_sk()
syzbot found that sin6_scope_i↗2025-09-16