Improper locking in Linux kernel - CVE-2025-38723

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Main Vulnerability Database Vulnerabilities #VU114831

Improper locking in Linux kernel - CVE-2025-38723

Published: September 5, 2025


Vulnerability identifier: #VU114831
CSH Severity: Low
CVSS v4 BT: 4.3 [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-2025-38723
CWE-ID: CWE-667
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the bpf_jit_supports_kfunc_call(), emit_bpf_tail_call() and build_insn() functions in arch/loongarch/net/bpf_jit.c. A local user can perform a denial of service (DoS) attack.


Affected software

Linux kernel
Debian Linux
openEuler
linux (Debian package)
bpftool
python3-perf-debuginfo
python3-perf
perf-debuginfo
perf
kernel-tools-devel
kernel-tools-debuginfo
kernel-source
kernel
bpftool-debuginfo
kernel-debuginfo
kernel-devel
kernel-tools
kernel-debugsource
kernel-headers
kernel-extra-modules

How to mitigate CVE-2025-38723

Install update from vendor's repository.

linux (Debian package) - update to 6.1.153-1
bpftool - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
python3-perf-debuginfo - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
python3-perf - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
perf-debuginfo - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
perf - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
kernel-tools-devel - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
kernel-tools-debuginfo - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
kernel-source - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
kernel - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
bpftool-debuginfo - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
kernel-debuginfo - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
kernel-devel - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
kernel-tools - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
kernel-debugsource - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
kernel-headers - addressed in versions 6.6.0-110.0.0.102, 6.6.0-110.0.0.113, 6.6.0-110.0.0.116
kernel-extra-modules - update to 6.6.0-110.0.0.116

External References

Related Security Bulletins