{"id":"CVE-2026-31571","summary":"drm/i915: Unlink NV12 planes earlier","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/i915: Unlink NV12 planes earlier\n\nunlink_nv12_plane() will clobber parts of the plane state\npotentially already set up by plane_atomic_check(), so we\nmust make sure not to call the two in the wrong order.\nThe problem happens when a plane previously selected as\na Y plane is now configured as a normal plane by user space.\nplane_atomic_check() will first compute the proper plane\nstate based on the userspace request, and unlink_nv12_plane()\nlater clears some of the state.\n\nThis used to work on account of unlink_nv12_plane() skipping\nthe state clearing based on the plane visibility. But I removed\nthat check, thinking it was an impossible situation. Now when\nthat situation happens unlink_nv12_plane() will just WARN\nand proceed to clobber the state.\n\nRather than reverting to the old way of doing things, I think\nit's more clear if we unlink the NV12 planes before we even\ncompute the new plane state.\n\n(cherry picked from commit 017ecd04985573eeeb0745fa2c23896fb22ee0cc)","modified":"2026-07-15T01:49:10.570671825Z","published":"2026-04-24T14:35:50.094Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31571.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/12f3b6cbab8fbeb95097685b40f0147406cf9746"},{"type":"WEB","url":"https://git.kernel.org/stable/c/70e2eb91cb6310a3508439f6f2539dfffa0abf77"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bfa71b7a9dc6b5b8af157686e03308291141d00c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31571.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31571"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"6a01df2f1b2a3b29721143729a3feff816bc0083"},{"fixed":"70e2eb91cb6310a3508439f6f2539dfffa0abf77"},{"fixed":"12f3b6cbab8fbeb95097685b40f0147406cf9746"},{"fixed":"bfa71b7a9dc6b5b8af157686e03308291141d00c"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31571.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.15.0"},{"fixed":"6.18.21"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.11"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31571.json"}}],"schema_version":"1.7.5"}