CVE-2025-21946
ksmbd: fix out-of-bounds in parse_sec_desc()
Vexday Risk Score
3Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
01 Apr 2025Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix out-of-bounds in parse_sec_desc()
If osidoffset, gsidoffset and dacloffset could be greater than smb_ntsd
struct size. If it is smaller, It could cause slab-out-of-bounds.
And when validating sid, It need to check it included subauth array size.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/159d059cbcb0e6d0e7a7b34af3862ba09a6b22d1https://git.kernel.org/stable/c/6a9831180d0b23b5c97e2bd841aefc8f82900172https://git.kernel.org/stable/c/c1569dbbe2d43041be9f3fef7ca08bec3b66ad1bhttps://git.kernel.org/stable/c/d6e13e19063db24f94b690159d0633aaf72a0f03https://git.kernel.org/stable/c/f4ee19528664777af8b842f8f001be98345aa973