{"id":"CVE-2026-23039","summary":"drm/gud: fix NULL fb and crtc dereferences on USB disconnect","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/gud: fix NULL fb and crtc dereferences on USB disconnect\n\nOn disconnect drm_atomic_helper_disable_all() is called which\nsets both the fb and crtc for a plane to NULL before invoking a commit.\n\nThis causes a kernel oops on every display disconnect.\n\nAdd guards for those dereferences.","modified":"2026-08-12T03:51:31.613321744Z","published":"2026-01-31T11:42:33.377Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23039.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/a255ec07f91d4c73a361a28b7a3d82f5710245f1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/dc2d5ddb193e363187bae2ad358245642d2721fb"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23039.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23039"},{"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":"73cfd166e045769a1b42d36897accaa6e06b8102"},{"fixed":"a255ec07f91d4c73a361a28b7a3d82f5710245f1"},{"fixed":"dc2d5ddb193e363187bae2ad358245642d2721fb"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23039.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.18.0"},{"fixed":"6.18.7"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23039.json"}}],"schema_version":"1.9.0"}