Use-after-free in Linux kernel - CVE-2025-39910

Vulnerability identifier: #VU116224

CSH Severity: Low

CVSS v4: 8.5 [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]

CVE-ID: CVE-2025-39910

CWE-ID: CWE-416

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the alloc_vmap_area() and pcpu_get_vm_areas() functions in mm/vmalloc.c. A local user can escalate privileges on the system.

Linux kernel
openEuler
python3-perf-debuginfo
kernel
bpftool
bpftool-debuginfo
kernel-debuginfo
kernel-debugsource
kernel-devel
kernel-headers
kernel-source
kernel-tools
kernel-tools-debuginfo
kernel-tools-devel
perf
perf-debuginfo
python3-perf
kernel-extra-modules

Install update from vendor's repository.

python3-perf-debuginfo - addressed in versions 6.6.0-139.0.0.120, 6.6.0-139.0.0.133
kernel - addressed in versions 6.6.0-139.0.0.120, 6.6.0-139.0.0.133
bpftool - addressed in versions 6.6.0-139.0.0.120, 6.6.0-139.0.0.133
bpftool-debuginfo - addressed in versions 6.6.0-139.0.0.120, 6.6.0-139.0.0.133
kernel-debuginfo - addressed in versions 6.6.0-139.0.0.120, 6.6.0-139.0.0.133
kernel-debugsource - addressed in versions 6.6.0-139.0.0.120, 6.6.0-139.0.0.133
kernel-devel - addressed in versions 6.6.0-139.0.0.120, 6.6.0-139.0.0.133
kernel-headers - addressed in versions 6.6.0-139.0.0.120, 6.6.0-139.0.0.133
kernel-source - addressed in versions 6.6.0-139.0.0.120, 6.6.0-139.0.0.133
kernel-tools - addressed in versions 6.6.0-139.0.0.120, 6.6.0-139.0.0.133
kernel-tools-debuginfo - addressed in versions 6.6.0-139.0.0.120, 6.6.0-139.0.0.133
kernel-tools-devel - addressed in versions 6.6.0-139.0.0.120, 6.6.0-139.0.0.133
perf - addressed in versions 6.6.0-139.0.0.120, 6.6.0-139.0.0.133
perf-debuginfo - addressed in versions 6.6.0-139.0.0.120, 6.6.0-139.0.0.133
python3-perf - addressed in versions 6.6.0-139.0.0.120, 6.6.0-139.0.0.133
kernel-extra-modules - update to 6.6.0-139.0.0.133

• https://git.kernel.org/stable/c/33b95d90427cb4babf32059e323a6d0c027610fe
• https://git.kernel.org/stable/c/79357cd06d41d0f5a11b17d7c86176e395d10ef2

• Use-after-free in Linux kernel mm
• openEuler 24.03 LTS SP2 update for kernel
• openEuler 24.03 LTS SP1 update for kernel
• openEuler 24.03 LTS update for kernel