{"id":"CVE-2026-89823","revision":"ef9acc08677d4464a12a31d9ce5f03f1","records":[{"revision":"ef9acc08677d4464a12a31d9ce5f03f1","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89823","aliases":[],"title":"drm: fix race between partial drm_dev_register() failure and ioctl","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm: fix race between partial drm_dev_register() failure and ioctl\n\nIf drm_dev_register() fails after registering a minor (e.g. render minor\nregistered, primary minor fails), userspace could have opened the first\nminor and entered a drm_dev_enter() critical section. Since the\nunplugged flag was never set, the ioctl proceeds while the error path\ntears down device resources.\n\nFix this by introducing drm_dev_synchronize_unplug(), which sets the\nunplugged flag and waits for the SRCU barrier, ensuring all in-flight\ndrm_dev_enter() critical sections complete before cleanup proceeds; call\nit on the error path of drm_dev_register().","state":0,"publishedAt":"2026-09-16T10:30:55.534+00:00","modifiedAt":"2026-10-19T08:53:17.224+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/gpu/drm/drm_drv.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"bee330f3d67273a68dcb99f59480d59553c008b2\",\n                            \"lessThan\": \"26d9162213952927cd59c0d94b7e0e992b347bec\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bee330f3d67273a68dcb99f59480d59553c008b2\",\n                            \"lessThan\": \"24d28d15c0f7f7d4a1c229f8730314f0f8758810\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bee330f3d67273a68dcb99f59480d59553c008b2\",\n                            \"lessThan\": \"6729990df9e70623bf53f855b521ae71ca9cb278\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bee330f3d67273a68dcb99f59480d59553c008b2\",\n                            \"lessThan\": \"a0a7e2e177f2f18b9e7318a4c64ac44efd9ef22c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bee330f3d67273a68dcb99f59480d59553c008b2\",\n                            \"lessThan\": \"19dbfe4d586aecfed121cb3fa62281761d9d341f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bee330f3d67273a68dcb99f59480d59553c008b2\",\n                            \"lessThan\": \"79d09cfe90304ff4f195e47d569800f5e0f8b854\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bee330f3d67273a68dcb99f59480d59553c008b2\",\n                            \"lessThan\": \"2d1215a72159d00001e08dee162e27718934bee9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bee330f3d67273a68dcb99f59480d59553c008b2\",\n                            \"lessThan\": \"eb197f7d60f00d0f5b1b3505dfc86a7e36045a3e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/gpu/drm/drm_drv.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.18\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.18\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.270\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.51\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.5\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/26d9162213952927cd59c0d94b7e0e992b347bec","https://git.kernel.org/stable/c/24d28d15c0f7f7d4a1c229f8730314f0f8758810","https://git.kernel.org/stable/c/6729990df9e70623bf53f855b521ae71ca9cb278","https://git.kernel.org/stable/c/a0a7e2e177f2f18b9e7318a4c64ac44efd9ef22c","https://git.kernel.org/stable/c/19dbfe4d586aecfed121cb3fa62281761d9d341f","https://git.kernel.org/stable/c/79d09cfe90304ff4f195e47d569800f5e0f8b854","https://git.kernel.org/stable/c/2d1215a72159d00001e08dee162e27718934bee9","https://git.kernel.org/stable/c/eb197f7d60f00d0f5b1b3505dfc86a7e36045a3e"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89823","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89823","identifiers":["CVE-2026-89823"]},"retained":false,"historicalAffected":[]}],"coverage":[]}