CVE-2025-21946 — Out-of-bounds Read in Linux
Severity
7.1HIGHNVD
OSV5.9OSV5.5OSV4.7
EPSS
0.1%
top 80.51%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedApr 1
Latest updateOct 15
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HExploitability: 1.8 | Impact: 5.2
Affected Packages7 packages
▶CVEListV5linux/linux0626e6641f6b467447c81dd7678a69c66f7746cf — f4ee19528664777af8b842f8f001be98345aa973+5