Improper locking in Linux kernel - CVE-2025-39767

Vulnerability identifier: #VU115490

CSH Severity: Low

CVSS v4: 6.8 [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]

CVE-ID: CVE-2025-39767

CWE-ID: CWE-667

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to improper locking within the module_emit_plt_entry() function in arch/loongarch/kernel/module-sections.c. A local user can perform a denial of service (DoS) attack.

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

Install update from vendor's repository.

kernel - addressed in versions 6.6.0-119.0.0.110, 6.6.0-119.0.0.122, 6.6.0-119.0.0.123
python3-perf-debuginfo - addressed in versions 6.6.0-119.0.0.110, 6.6.0-119.0.0.122, 6.6.0-119.0.0.123
python3-perf - addressed in versions 6.6.0-119.0.0.110, 6.6.0-119.0.0.122, 6.6.0-119.0.0.123
perf-debuginfo - addressed in versions 6.6.0-119.0.0.110, 6.6.0-119.0.0.122, 6.6.0-119.0.0.123
perf - addressed in versions 6.6.0-119.0.0.110, 6.6.0-119.0.0.122, 6.6.0-119.0.0.123
kernel-tools-devel - addressed in versions 6.6.0-119.0.0.110, 6.6.0-119.0.0.122, 6.6.0-119.0.0.123
kernel-tools-debuginfo - addressed in versions 6.6.0-119.0.0.110, 6.6.0-119.0.0.122, 6.6.0-119.0.0.123
kernel-tools - addressed in versions 6.6.0-119.0.0.110, 6.6.0-119.0.0.122, 6.6.0-119.0.0.123
kernel-headers - addressed in versions 6.6.0-119.0.0.110, 6.6.0-119.0.0.122, 6.6.0-119.0.0.123
kernel-devel - addressed in versions 6.6.0-119.0.0.110, 6.6.0-119.0.0.122, 6.6.0-119.0.0.123
kernel-debugsource - addressed in versions 6.6.0-119.0.0.110, 6.6.0-119.0.0.122, 6.6.0-119.0.0.123
kernel-debuginfo - addressed in versions 6.6.0-119.0.0.110, 6.6.0-119.0.0.122, 6.6.0-119.0.0.123
bpftool-debuginfo - addressed in versions 6.6.0-119.0.0.110, 6.6.0-119.0.0.122, 6.6.0-119.0.0.123
bpftool - addressed in versions 6.6.0-119.0.0.110, 6.6.0-119.0.0.122, 6.6.0-119.0.0.123
kernel-source - addressed in versions 6.6.0-119.0.0.110, 6.6.0-119.0.0.122, 6.6.0-119.0.0.123
kernel-extra-modules - update to 6.6.0-119.0.0.123
linux (Debian package) - update to 6.12.48-1

• https://git.kernel.org/stable/c/5189c0b7c251363a4dd7678ed11b054c54f36f6f
• https://git.kernel.org/stable/c/63dbd8fb2af3a89466538599a9acb2d11ef65c06
• https://git.kernel.org/stable/c/a096b0280168d0c8b0ec1cbbfd56c8b81af8c7d8
• https://git.kernel.org/stable/c/e94cdb9fb279430cbd323a74c7ec124c85109747

• Improper locking in Linux kernel loongarch kernel
• Debian update for linux
• openEuler 24.03 LTS update for kernel
• openEuler 24.03 LTS SP2 update for kernel
• openEuler 24.03 LTS SP1 update for kernel