Linux Kernel CVE-2025-71301

Update the Linux kernel to a patched version containing commit e7b7022f11d3cf281c726117478696b83681bf11 (6.18 stable branch), commit 6b953d92f2f29e74b125617c6f00300fa1bed97e (6.19 stable branch), or commit cda83b099f117f2a28a77bf467af934cb39e49cf (7.0 stable branch), as appropriate for your deployment. For distributions maintaining 6.16 mainline kernels, apply the equivalent fix from the Linux kernel repository at https://git.kernel.org/stable/c/. If immediate patching is not feasible, the impact can be mitigated by restricting access to DRM device nodes (/dev/dri/*) via filesystem permissions or AppArmor/SELinux policies, since exploitation requires local user privileges; however, this does not address the underlying kernel code quality issue. System administrators monitoring kernel logs should expect warning messages on affected versions only during DRM graphics operations in Kunit test environments or custom drivers using the internal vmap_locked APIs-these are not warnings for end-user installations unless custom code directly calls these kernel-internal functions.