{ "dataType": "CVE_RECORD", "cveMetadata": { "cveId": "CVE-2024-26874", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-19T14:20:24.185Z", "datePublished": "2024-04-17T10:27:33.278Z", "dateUpdated": "2026-05-11T20:05:48.588Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T20:05:48.588Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/mediatek: Fix a null pointer crash in mtk_drm_crtc_finish_page_flip\n\nIt's possible that mtk_crtc->event is NULL in\nmtk_drm_crtc_finish_page_flip().\n\npending_needs_vblank value is set by mtk_crtc->event, but in\nmtk_drm_crtc_atomic_flush(), it's is not guarded by the same\nlock in mtk_drm_finish_page_flip(), thus a race condition happens.\n\nConsider the following case:\n\nCPU1 CPU2\nstep 1:\nmtk_drm_crtc_atomic_begin()\nmtk_crtc->event is not null,\n step 1:\n mtk_drm_crtc_atomic_flush:\n mtk_drm_crtc_update_config(\n !!mtk_crtc->event)\nstep 2:\nmtk_crtc_ddp_irq ->\nmtk_drm_finish_page_flip:\nlock\nmtk_crtc->event set to null,\npending_needs_vblank set to false\nunlock\n pending_needs_vblank set to true,\n\n step 2:\n mtk_crtc_ddp_irq ->\n mtk_drm_finish_page_flip called again,\n pending_needs_vblank is still true\n //null pointer\n\nInstead of guarding the entire mtk_drm_crtc_atomic_flush(), it's more\nefficient to just check if mtk_crtc->event is null before use." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/mediatek/mtk_drm_crtc.c" ], "versions": [ { "version": "119f5173628aa7a0c3cf9db83460d40709e8241d", "lessThan": "accdac6b71d5a2b84040c3d2234f53a60edc398e", "status": "affected", "versionType": "git" }, { "version": "119f5173628aa7a0c3cf9db83460d40709e8241d", "lessThan": "dfde84cc6c589f2a9f820f12426d97365670b731", "status": "affected", "versionType": "git" }, { "version": "119f5173628aa7a0c3cf9db83460d40709e8241d", "lessThan": "4688be96d20ffa49d2186523ee84f475f316fd49", "status": "affected", "versionType": "git" }, { "version": "119f5173628aa7a0c3cf9db83460d40709e8241d", "lessThan": "9beec711a17245b853d64488fd5b739031612340", "status": "affected", "versionType": "git" }, { "version": "119f5173628aa7a0c3cf9db83460d40709e8241d", "lessThan": "d2bd30c710475b2e29288827d2c91f9e6e2b91d7", "status": "affected", "versionType": "git" }, { "version": "119f5173628aa7a0c3cf9db83460d40709e8241d", "lessThan": "a3dd12b64ae8373a41a216a0b621df224210860a", "status": "affected", "versionType": "git" }, { "version": "119f5173628aa7a0c3cf9db83460d40709e8241d", "lessThan": "9acee29a38b4d4b70f1f583e5ef9a245db4db710", "status": "affected", "versionType": "git" }, { "version": "119f5173628aa7a0c3cf9db83460d40709e8241d", "lessThan": "3fc88b246a2fc16014e374040fc15af1d3752535", "status": "affected", "versionType": "git" }, { "version": "119f5173628aa7a0c3cf9db83460d40709e8241d", "lessThan": "c958e86e9cc1b48cac004a6e245154dfba8e163b", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/mediatek/mtk_drm_crtc.c" ], "versions": [ { "version": "4.7", "status": "affected" }, { "version": "0", "lessThan": "4.7", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.311", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.273", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.214", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.153", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.83", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.23", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.7.11", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.8.2", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.9", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "4.19.311" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "5.4.273" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "5.10.214" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "5.15.153" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "6.1.83" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "6.6.23" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "6.7.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "6.8.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7", "versionEndExcluding": "6.9" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/accdac6b71d5a2b84040c3d2234f53a60edc398e" }, { "url": "https://git.kernel.org/stable/c/dfde84cc6c589f2a9f820f12426d97365670b731" }, { "url": "https://git.kernel.org/stable/c/4688be96d20ffa49d2186523ee84f475f316fd49" }, { "url": "https://git.kernel.org/stable/c/9beec711a17245b853d64488fd5b739031612340" }, { "url": "https://git.kernel.org/stable/c/d2bd30c710475b2e29288827d2c91f9e6e2b91d7" }, { "url": "https://git.kernel.org/stable/c/a3dd12b64ae8373a41a216a0b621df224210860a" }, { "url": "https://git.kernel.org/stable/c/9acee29a38b4d4b70f1f583e5ef9a245db4db710" }, { "url": "https://git.kernel.org/stable/c/3fc88b246a2fc16014e374040fc15af1d3752535" }, { "url": "https://git.kernel.org/stable/c/c958e86e9cc1b48cac004a6e245154dfba8e163b" } ], "title": "drm/mediatek: Fix a null pointer crash in mtk_drm_crtc_finish_page_flip", "x_generator": { "engine": "bippy-1.2.0" 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