SB20240625126 - Use-after-free in Linux kernel 9p
Published: June 25, 2024 Updated: May 13, 2025
Security Bulletin ID
SB20240625126
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-2024-39463)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the v9fs_cached_dentry_delete() function in fs/9p/vfs_dentry.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/cb299cdba09f46f090b843d78ba26b667d50a456
- https://git.kernel.org/stable/c/f0c5c944c6d8614c19e6e9a97fd2011dcd30e8f5
- https://git.kernel.org/stable/c/fe17ebf22feb4ad7094d597526d558a49aac92b4
- https://git.kernel.org/stable/c/c898afdc15645efb555acb6d85b484eb40a45409
- https://www.zerodayinitiative.com/advisories/ZDI-24-1194/
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.168
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.94
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.34