SB20250916111 - Use-after-free in Linux kernel 9p
Published: September 16, 2025 Updated: September 22, 2025
Security Bulletin ID
SB20250916111
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-2022-50335)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the p9_tag_alloc() function in net/9p/client.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1cabce56626a61f4f02452cba61ad4332a4b73f8
- https://git.kernel.org/stable/c/26273ade77f54716e30dfd40ac6e85ceb54ac0f9
- https://git.kernel.org/stable/c/73c47b3123b351de2d3714a72a336c0f72f203af
- https://git.kernel.org/stable/c/967fc34f297e40fd2e068cf6b0c3eb4916228539
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.2