CVE-2025-22039 — Out-of-bounds Read in Linux
Severity
7.1HIGHNVD
OSV5.9
EPSS
0.0%
top 87.06%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedApr 16
Latest updateJan 9
Description
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix overflow in dacloffset bounds check
The dacloffset field was originally typed as int and used in an
unchecked addition, which could overflow and bypass the existing
bounds check in both smb_check_perm_dacl() and smb_inherit_dacl().
This could result in out-of-bounds memory access and a kernel crash
when dereferencing the DACL pointer.
This patch converts dacloffset to unsigned int and uses
check_add_overflow() to …
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