SB2025091960 - Use-after-free in Linux kernel cifs
Published: September 19, 2025 Updated: September 22, 2025
Security Bulletin ID
SB2025091960
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2023-53427)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the allocate_mr_list() function in fs/cifs/smbdirect.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/275a3d2b9408fc4895e342f772cab9a89960546e
- https://git.kernel.org/stable/c/2d0c4f5f618f58eba03385363717703bee873c64
- https://git.kernel.org/stable/c/3524d6da0fe88aee79f06be6572955d16ad76b39
- https://git.kernel.org/stable/c/3e161c2791f8e661eed24a2c624087084d910215
- https://git.kernel.org/stable/c/41832c62a75dad530dc5a2856c92ae5459d497e5
- https://git.kernel.org/stable/c/7cbd5bdb5bd4404a5da4309521134b42c65846c0
- https://git.kernel.org/stable/c/cfd85a0922c4696d768965e686ad805a58d9d834
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.173