SB2024123051 - Use-after-free in Linux kernel smc
Published: December 30, 2024 Updated: May 12, 2025
Security Bulletin ID
SB2024123051
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-2024-56640)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the smc_listen_out() and smc_listen_work() functions in net/smc/af_smc.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0cf598548a6c36d90681d53c6b77d52363f2f295
- https://git.kernel.org/stable/c/2c7f14ed9c19ec0f149479d1c2842ec1f9bf76d7
- https://git.kernel.org/stable/c/673d606683ac70bc074ca6676b938bff18635226
- https://git.kernel.org/stable/c/6f0ae06a234a78ae137064f2c89135ac078a00eb
- https://git.kernel.org/stable/c/f502a88fdd415647a1f2dc45fac71b9c522a052b
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.174