SB20250226265 - Use-after-free in Linux kernel ocfs2 dlmfs
Published: February 26, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250226265
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-2022-49337)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the spin_lock() and user_dlm_destroy_lock() functions in fs/ocfs2/dlmfs/userdlm.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/02480e2e82ae0e5588374bbbcf4fa6e4959fa174
- https://git.kernel.org/stable/c/1434cd71ad9f3a6beda3036972983b6c4869207c
- https://git.kernel.org/stable/c/2c5e26a626fe46675bceba853e12aaf13c712e10
- https://git.kernel.org/stable/c/337e36550788dbe03254f0593a231c1c4873b20d
- https://git.kernel.org/stable/c/733a35c00ef363a1c774d7ea486e0735b7c13a15
- https://git.kernel.org/stable/c/82bf8e7271fade40184177cb406203addc34c4a0
- https://git.kernel.org/stable/c/863e0d81b6683c4cbc588ad831f560c90e494bef
- https://git.kernel.org/stable/c/9c96238fac045b289993d7bc5aae7b2d72b25c76
- https://git.kernel.org/stable/c/efb54ec548829e1d3605f0434526f86e345b1b28
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.14