SB2024071321 - Use-after-free in Linux kernel bridge
Published: July 13, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024071321
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-2024-40920)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the br_mst_set_state() function in net/bridge/br_mst.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/caaa2129784a04dcade0ea92c12e6ff90bbd23d8
- https://git.kernel.org/stable/c/7caefa2771722e65496d85b62e1dc4442b7d1345
- https://git.kernel.org/stable/c/406bfc04b01ee47e4c626f77ecc7d9f85135b166
- https://git.kernel.org/stable/c/546ceb1dfdac866648ec959cbc71d9525bd73462
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.95
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.35