{ "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" } } ] } }