{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53263","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-09-16T08:05:12.514Z","datePublished":"2025-09-16T08:06:53.994Z","dateUpdated":"2026-08-05T09:13:20.402Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T09:13:20.402Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/nouveau/disp: fix use-after-free in error handling of nouveau_connector_create\n\nWe can't simply free the connector after calling drm_connector_init on it.\nWe need to clean up the drm side first.\n\nIt might not fix all regressions from commit 2b5d1c29f6c4\n(\"drm/nouveau/disp: PIOR DP uses GPIO for HPD, not PMGR AUX interrupts\"),\nbut at least it fixes a memory corruption in error handling related to\nthat commit."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:L - The bug is in nouveau DRM connector setup during GPU driver probe (PCI probe → nouveau_display_create → nouveau_connector_create), reachable only with local access to a system using the nouveau driver, not via network packets.\nAC:L - On affected hardware/configurations where nvif_conn_ctor or the DP IRQ nvif_conn_event_ctor fails, the UAF is deterministic: drm_connector_init already linked the object, kfree skips cleanup, and the caller immediately walks connector_list (encoder cull), with no attacker-uncontrollable race.\nPR:L - After the dangling connector remains on the DRM mode_config list, unprivileged local users with access to the DRM device (common via seat/video group) can exercise connector-list paths; exploitation does not require real root beyond ordinary local DRM access.\nUI:N - No separate victim action is required; the faulty error path runs during driver initialization and subsequent DRM use needs no cooperative user interaction.\nS:U - This is in-kernel memory corruption/privilege impact within the host kernel’s security authority, not a VM/IOMMU/sandbox boundary crossing.\nC:H - Use-after-free of the drm_connector object leaves a heap object the attacker can reclaim and control, enabling arbitrary kernel read primitives per UAF guidance.\nI:H - The same UAF is exploitable for heap shaping and arbitrary write/control-flow hijacking in the kernel, so integrity impact is High.\nA:H - Dereferencing the freed connector during list walks (probe cull, cleanup, or later DRM operations) causes kernel oops/panic or equivalent denial of service."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/nouveau/nouveau_connector.c"],"versions":[{"version":"95983aea80038539ebc70e41e73e9bb4eabd1a92","lessThan":"3f27451c9f29d5ed00232968680c7838a44dcac7","status":"affected","versionType":"git"},{"version":"95983aea80038539ebc70e41e73e9bb4eabd1a92","lessThan":"872feeecd08c81d212a52211d212897b8a857544","status":"affected","versionType":"git"},{"version":"95983aea80038539ebc70e41e73e9bb4eabd1a92","lessThan":"1b254b791d7b7dea6e8adc887fbbd51746d8bb27","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/nouveau/nouveau_connector.c"],"versions":[{"version":"6.0","status":"affected"},{"version":"0","lessThan":"6.0","status":"unaffected","versionType":"semver"},{"version":"6.1.47","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.4.12","lessThanOrEqual":"6.4.*","status":"unaffected","versionType":"semver"},{"version":"6.5","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":"6.0","versionEndExcluding":"6.1.47"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.4.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.5"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/3f27451c9f29d5ed00232968680c7838a44dcac7"},{"url":"https://git.kernel.org/stable/c/872feeecd08c81d212a52211d212897b8a857544"},{"url":"https://git.kernel.org/stable/c/1b254b791d7b7dea6e8adc887fbbd51746d8bb27"}],"title":"drm/nouveau/disp: fix use-after-free in error handling of nouveau_connector_create","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.8,"attackVector":"LOCAL","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"id":"CVE-2023-53263","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-01-14T18:03:23.898360Z"}}}],"problemTypes":[{"descriptions":[{"lang":"en","type":"CWE","cweId":"CWE-416","description":"CWE-416 Use After Free"}]}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-01-14T18:12:52.278Z"}}]}}