#VU102027 Use-after-free in Linux kernel - CVE-2024-56640
Published: December 30, 2024 / Updated: May 12, 2025
Vulnerability identifier: #VU102027
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2024-56640
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
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.
External links
- 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