CVE-2026-31571: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: drm/i915: Unlink NV12 planes earlier unlink_nv12_plane() will clobber parts of the plane state potentially already set up by plane_atomic_check(), so we must make sure not to call the two in the wrong order. The problem happens when a plane previously selected as a Y plane is now configured as a normal plane by user space. plane_atomic_check() will first compute the proper plane state based on the userspace request, and unlink_nv12_plane() later clears some of the state. This used to work on account of unlink_nv12_plane() skipping the state clearing based on the plane visibility. But I removed that check, thinking it was an impossible situation. Now when that situation happens unlink_nv12_plane() will just WARN and proceed to clobber the state. Rather than reverting to the old way of doing things, I think it's more clear if we unlink the NV12 planes before we even compute the new plane state. (cherry picked from commit 017ecd04985573eeeb0745fa2c23896fb22ee0cc)

Засегнати продукти

• Linux Linux: 6a01df2f1b2a3b29721143729a3feff816bc0083 преди 70e2eb91cb6310a3508439f6f2539dfffa0abf77; 6a01df2f1b2a3b29721143729a3feff816bc0083 преди 12f3b6cbab8fbeb95097685b40f0147406cf9746; 6a01df2f1b2a3b29721143729a3feff816bc0083 преди bfa71b7a9dc6b5b8af157686e03308291141d00c
• Linux Linux: 6.15; преди 6.15; 6.18.21 до 6.18.*; 6.19.11 до 6.19.*; от 7.0 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-31571
• https://nvd.nist.gov/vuln/detail/CVE-2026-31571
• https://git.kernel.org/stable/c/70e2eb91cb6310a3508439f6f2539dfffa0abf77
• https://git.kernel.org/stable/c/12f3b6cbab8fbeb95097685b40f0147406cf9746
• https://git.kernel.org/stable/c/bfa71b7a9dc6b5b8af157686e03308291141d00c