CVE-2025-71298 drm/tests: shmem: Hold reservation lock around madvise

What is CVE-2025-71298?

CVE-2025-71298 is a medium-severity vulnerability in Linux kernel, published on 8 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

drm/tests: shmem: Hold reservation lock around madvise

Acquire and release the GEM object's reservation lock around calls to the object's madvide operation. The tests use drm_gem_shmem_madvise_locked(), which led to errors such as show below.

[ 58.339389] WARNING: CPU: 1 PID: 1352 at drivers/gpu/drm/drm_gem_shmem_helper.c:499 drm_gem_shmem_madvise_locked+0xde/0x140

Only export the new helper drm_gem_shmem_madvise() for Kunit tests. This is not an interface for regular drivers.

Which versions are affected by CVE-2025-71298?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2025-71298?

Apply the vendor's patch.

Is CVE-2025-71298 being exploited?

There is no known exploitation of CVE-2025-71298 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2025-71298, DEBIAN-CVE-2025-71298, GHSA-j7c4-w5pq-7cg7, UBUNTU-CVE-2025-71298.