#VU114529 Improper locking in Linux kernel - CVE-2025-38640
Published: August 28, 2025
Vulnerability identifier: #VU114529
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-38640
CWE-ID: CWE-667
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 perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the nf_hook_run_bpf() function in net/netfilter/nf_bpf_link.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/0a356da16fb933abbeeb7aea038c351f3342cd3f
- https://git.kernel.org/stable/c/17ce3e5949bc37557305ad46316f41c7875d6366
- https://git.kernel.org/stable/c/62f6175d145e00fc999fd2fcbffad3f59253c66a
- https://git.kernel.org/stable/c/e0199c28167a8a4adec036005a8df268b2b68529
- https://git.kernel.org/stable/c/ee2502485702e4398cd74dbfb288bfa111d25e62