{ "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": "2024-08-02T00:21:04.219Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-05-29T05:24:16.391Z" }, "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": "119f5173628a", "lessThan": "accdac6b71d5", "status": "affected", "versionType": "git" }, { "version": "119f5173628a", "lessThan": "dfde84cc6c58", "status": "affected", "versionType": "git" }, { "version": "119f5173628a", "lessThan": "4688be96d20f", "status": "affected", "versionType": "git" }, { "version": "119f5173628a", "lessThan": "9beec711a172", "status": "affected", "versionType": "git" }, { "version": "119f5173628a", "lessThan": "d2bd30c71047", "status": "affected", "versionType": "git" }, { "version": "119f5173628a", "lessThan": "a3dd12b64ae8", "status": "affected", "versionType": "git" }, { "version": "119f5173628a", "lessThan": "9acee29a38b4", "status": "affected", "versionType": "git" }, { "version": "119f5173628a", "lessThan": "3fc88b246a2f", "status": "affected", "versionType": "git" }, { "version": "119f5173628a", "lessThan": "c958e86e9cc1", "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": "custom" }, { "version": "4.19.311", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.4.273", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.10.214", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.15.153", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.1.83", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.23", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.7.11", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.8.2", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.9", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "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" }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html" }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html" } ], "title": "drm/mediatek: Fix a null pointer crash in mtk_drm_crtc_finish_page_flip", "x_generator": { "engine": "bippy-a5840b7849dd" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2024-26874", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "version": "2.0.3", "timestamp": "2024-04-23T14:01:58.775611Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-07-05T17:21:21.785Z" } }, { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:21:04.219Z" }, "title": "CVE Program Container", "references": [ { "url": "https://git.kernel.org/stable/c/accdac6b71d5a2b84040c3d2234f53a60edc398e", "tags": [ "x_transferred" ] }, { "url": 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"tags": [ "x_transferred" ] }, { "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html", "tags": [ "x_transferred" ] } ] } ] }, "dataVersion": "5.1" }