#VU104943 Use-after-free in Linux kernel - CVE-2025-21763
Published: February 27, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU104943
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-2025-21763
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 __neigh_notify() function in net/core/neighbour.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/1cbb2aa90cd3fba15ad7efb5cdda28f3d1082379
- https://git.kernel.org/stable/c/559307d25235e24b5424778c7332451b6c741159
- https://git.kernel.org/stable/c/784eb2376270e086f7db136d154b8404edacf97b
- https://git.kernel.org/stable/c/becbd5850c03ed33b232083dd66c6e38c0c0e569
- https://git.kernel.org/stable/c/cdd5c2a12ddad8a77ce1838ff9f29aa587de82df
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.16