{"id":"CVE-2026-68303","summary":"drm/vc4: hvs/v3d: Fix null dereference in unbind","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vc4: hvs/v3d: Fix null dereference in unbind\n\nThe hvs and v3d drivers use dev_get_drvdata(master) in their unbind\nfunctions. Since the vc4-drm gets removed before its dependent drivers\n(vc4_hvs/vc4_v3d) the vc4_hvs_unbind/vc4_v3d_unbind functions try to\nget drvdata of its master and fails with a null dereference error.\n\nUse the data pointer passed to the unbind functions directly instead of\ndev_get_drvdata(master). This avoids using potentially freed memory.","modified":"2026-08-18T03:30:59.880183308Z","published":"2026-08-10T12:02:37.512Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68303.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/261f0a3f0ac03248284f5116d3258f89c9642215"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7dc3680b7ffe01add3e9299fde8471d2dd53a8ae"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68303.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68303"},{"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":"c8b75bca92cbf064b9fa125fc74a85994452e935"},{"fixed":"261f0a3f0ac03248284f5116d3258f89c9642215"},{"fixed":"7dc3680b7ffe01add3e9299fde8471d2dd53a8ae"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68303.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.4.0"},{"fixed":"7.1.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68303.json"}}],"schema_version":"1.9.0"}