Use-after-free in Linux kernel - CVE-2025-71202

Vulnerability identifier: #VU122879

CSH Severity: Low

CVSS v4 BT: 5.9 [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-2025-71202

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 kernel_pgtable_work_func() function in mm/pgtable-generic.c. A local user can escalate privileges on the system.

Linux kernel
openEuler
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
python3-perf-debuginfo

Install update from vendor's repository.

kernel - update to 6.6.0-145.1.14.152
bpftool - update to 6.6.0-145.1.14.152
bpftool-debuginfo - update to 6.6.0-145.1.14.152
kernel-debuginfo - update to 6.6.0-145.1.14.152
kernel-debugsource - update to 6.6.0-145.1.14.152
kernel-devel - update to 6.6.0-145.1.14.152
kernel-headers - update to 6.6.0-145.1.14.152
kernel-source - update to 6.6.0-145.1.14.152
kernel-tools - update to 6.6.0-145.1.14.152
kernel-tools-debuginfo - update to 6.6.0-145.1.14.152
kernel-tools-devel - update to 6.6.0-145.1.14.152
perf - update to 6.6.0-145.1.14.152
perf-debuginfo - update to 6.6.0-145.1.14.152
python3-perf - update to 6.6.0-145.1.14.152
python3-perf-debuginfo - update to 6.6.0-145.1.14.152

• https://git.kernel.org/stable/c/9f0a7ab700f8620e433b05c57fbd26c92ea186d9
• https://git.kernel.org/stable/c/e37d5a2d60a338c5917c45296bac65da1382eda5

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