{"id":"CVE-2026-68303","state":"PUBLISHED","title":"drm/vc4: hvs/v3d: Fix null dereference in unbind","description":"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.","publishedAt":"2026-08-10T12:02:37.512Z","updatedAt":"2026-10-30T12:28:21.255Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c8b75bca92cbf064b9fa125fc74a85994452e935","status":"affected","lessThan":"3ed3d0b31500b11c8fd9ef96b7703edbccb32e2e","versionType":"git"},{"version":"c8b75bca92cbf064b9fa125fc74a85994452e935","status":"affected","lessThan":"3be8dcc1a5854cf24cc332e0d6fc865c47ff49a1","versionType":"git"},{"version":"c8b75bca92cbf064b9fa125fc74a85994452e935","status":"affected","lessThan":"8f62aae059e06746a18a00af27179c3c0f17f4c7","versionType":"git"},{"version":"c8b75bca92cbf064b9fa125fc74a85994452e935","status":"affected","lessThan":"708688ec31ac6b35103ba364dc300a09930079d4","versionType":"git"},{"version":"c8b75bca92cbf064b9fa125fc74a85994452e935","status":"affected","lessThan":"261f0a3f0ac03248284f5116d3258f89c9642215","versionType":"git"},{"version":"c8b75bca92cbf064b9fa125fc74a85994452e935","status":"affected","lessThan":"7dc3680b7ffe01add3e9299fde8471d2dd53a8ae","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/vc4/vc4_hvs.c","drivers/gpu/drm/vc4/vc4_v3d.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.4","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.6","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/vc4/vc4_hvs.c","drivers/gpu/drm/vc4/vc4_v3d.c"]}],"references":["https://git.kernel.org/stable/c/3ed3d0b31500b11c8fd9ef96b7703edbccb32e2e","https://git.kernel.org/stable/c/3be8dcc1a5854cf24cc332e0d6fc865c47ff49a1","https://git.kernel.org/stable/c/8f62aae059e06746a18a00af27179c3c0f17f4c7","https://git.kernel.org/stable/c/708688ec31ac6b35103ba364dc300a09930079d4","https://git.kernel.org/stable/c/261f0a3f0ac03248284f5116d3258f89c9642215","https://git.kernel.org/stable/c/7dc3680b7ffe01add3e9299fde8471d2dd53a8ae"],"weaknesses":[],"ingestedAt":"2026-10-30T12:46:06.359Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/68xxx/CVE-2026-68303.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-68303","state":"PUBLISHED","datePublished":"2026-08-10T12:02:37.512Z","dateUpdated":"2026-10-30T12:28:21.255Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-30T09:28:09.381Z"},"containers":{"cna":{"title":"drm/vc4: hvs/v3d: Fix null dereference in unbind","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c8b75bca92cbf064b9fa125fc74a85994452e935","status":"affected","lessThan":"3ed3d0b31500b11c8fd9ef96b7703edbccb32e2e","versionType":"git"},{"version":"c8b75bca92cbf064b9fa125fc74a85994452e935","status":"affected","lessThan":"3be8dcc1a5854cf24cc332e0d6fc865c47ff49a1","versionType":"git"},{"version":"c8b75bca92cbf064b9fa125fc74a85994452e935","status":"affected","lessThan":"8f62aae059e06746a18a00af27179c3c0f17f4c7","versionType":"git"},{"version":"c8b75bca92cbf064b9fa125fc74a85994452e935","status":"affected","lessThan":"708688ec31ac6b35103ba364dc300a09930079d4","versionType":"git"},{"version":"c8b75bca92cbf064b9fa125fc74a85994452e935","status":"affected","lessThan":"261f0a3f0ac03248284f5116d3258f89c9642215","versionType":"git"},{"version":"c8b75bca92cbf064b9fa125fc74a85994452e935","status":"affected","lessThan":"7dc3680b7ffe01add3e9299fde8471d2dd53a8ae","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/vc4/vc4_hvs.c","drivers/gpu/drm/vc4/vc4_v3d.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.4","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.4","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.6","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/vc4/vc4_hvs.c","drivers/gpu/drm/vc4/vc4_v3d.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/3ed3d0b31500b11c8fd9ef96b7703edbccb32e2e"},{"url":"https://git.kernel.org/stable/c/3be8dcc1a5854cf24cc332e0d6fc865c47ff49a1"},{"url":"https://git.kernel.org/stable/c/8f62aae059e06746a18a00af27179c3c0f17f4c7"},{"url":"https://git.kernel.org/stable/c/708688ec31ac6b35103ba364dc300a09930079d4"},{"url":"https://git.kernel.org/stable/c/261f0a3f0ac03248284f5116d3258f89c9642215"},{"url":"https://git.kernel.org/stable/c/7dc3680b7ffe01add3e9299fde8471d2dd53a8ae"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:28:21.255Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4","versionEndExcluding":"7.1.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}