{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63885", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T07:54:57.018Z", "datePublished": "2026-07-19T14:54:58.590Z", "dateUpdated": "2026-08-05T12:36:54.290Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:36:54.290Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/gem: fix race between change_handle and handle_delete\n\ndrm_gem_change_handle_ioctl leaves the old handle live in the IDR\nduring the window between spin_unlock(table_lock) and the final\nspin_lock(table_lock). A concurrent drm_gem_handle_delete on the old\nhandle succeeds in this window, decrements handle_count to 0, and frees\nthe GEM object while the new handle's IDR entry still references it.\n\nNULL the old handle's IDR entry before dropping table_lock so that any\nconcurrent GEM_CLOSE on the old handle sees NULL and returns -EINVAL.\nRestore the old entry on the prime-bookkeeping error path."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - Exploitation requires local ioctl calls on /dev/dri/renderD* or /dev/dri/card* through DRM_IOCTL_GEM_CHANGE_HANDLE and DRM_IOCTL_GEM_CLOSE; there is no network-facing path to this code.\nAC:L - The attacker controls both racing threads from the same process (one issuing GEM_CHANGE_HANDLE, one issuing GEM_CLOSE on the old handle) and can repeat until the window is hit; this is a self-induced race, not one dependent on external timing.\nPR:L - Only DRM_RENDER_ALLOW is required, available to unprivileged local users with access to a render node (common on desktops, Android, browsers' GPU processes, and cloud GPU instances); no CAP_SYS_ADMIN or init-namespace root is needed.\nUI:N - No victim interaction is required beyond the attacker already having render-node access; the race is triggered entirely by the attacker's own concurrent ioctl calls.\nS:C - Successful exploitation crosses from a sandboxed application security boundary (browser GPU process, Android app sandbox, or container with passed-through GPU device) into kernel memory, enabling privilege escalation beyond the attacker's original security scope.\nC:H - The bug is a GEM object use-after-free; freed kernel heap objects can be reallocated and dereferenced via subsequent GEM operations, enabling arbitrary kernel memory disclosure.\nI:H - Use-after-free of a drm_gem_object allows heap grooming and corruption of reallocated objects, providing a standard path to arbitrary kernel write and local privilege escalation/code execution.\nA:H - The race can free a GEM object still referenced by ioctl state, causing kernel oops/panic on dereference of freed memory; UAF bugs also carry inherent crash risk even before full exploitation."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/drm_gem.c"], "versions": [{"version": "672464dd53231509c9c771110798c56d4660e19e", "lessThan": "0dfa42cfe4dbe114533480503934f43e33c1e83d", "status": "affected", "versionType": "git"}, {"version": "61bd96d3e5472c253f9c1ab77608f0c8aaa9d025", "lessThan": "cde2c9257cbe8463b9dcf7b1075177b72b5fd938", "status": "affected", "versionType": "git"}, {"version": "5e28b7b94408897e41c63477aabc9e1db439bc8c", "lessThan": "7164d78559b0ff29931a366a840a9e5dd53d4b7c", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/drm_gem.c"], "versions": [{"version": "6.18.32", "lessThan": "6.18.35", "status": "affected", "versionType": "semver"}, {"version": "7.0.9", "lessThan": "7.0.12", "status": "affected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18.32", "versionEndExcluding": "6.18.35"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0.9", "versionEndExcluding": "7.0.12"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/0dfa42cfe4dbe114533480503934f43e33c1e83d"}, {"url": "https://git.kernel.org/stable/c/cde2c9257cbe8463b9dcf7b1075177b72b5fd938"}, {"url": "https://git.kernel.org/stable/c/7164d78559b0ff29931a366a840a9e5dd53d4b7c"}], "title": "drm/gem: fix race between change_handle and handle_delete", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/drm_gem.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "0dfa42cfe4dbe114533480503934f43e33c1e83d", "status": "affected", "version": "672464dd53231509c9c771110798c56d4660e19e", "versionType": "git"}, {"lessThan": "cde2c9257cbe8463b9dcf7b1075177b72b5fd938", "status": "affected", "version": "61bd96d3e5472c253f9c1ab77608f0c8aaa9d025", "versionType": "git"}, {"lessThan": "7164d78559b0ff29931a366a840a9e5dd53d4b7c", "status": "affected", "version": "5e28b7b94408897e41c63477aabc9e1db439bc8c", "versionType": "git"}]}, {"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/drm_gem.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "6.18.35", "status": "affected", "version": "6.18.32", "versionType": "semver"}, {"lessThan": "7.0.12", "status": "affected", "version": "7.0.9", "versionType": "semver"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/gem: fix race between change_handle and handle_delete\n\ndrm_gem_change_handle_ioctl leaves the old handle live in the IDR\nduring the window between spin_unlock(table_lock) and the final\nspin_lock(table_lock). A concurrent drm_gem_handle_delete on the old\nhandle succeeds in this window, decrements handle_count to 0, and frees\nthe GEM object while the new handle's IDR entry still references it.\n\nNULL the old handle's IDR entry before dropping table_lock so that any\nconcurrent GEM_CLOSE on the old handle sees NULL and returns -EINVAL.\nRestore the old entry on the prime-bookkeeping error path."}], "id": "CVE-2026-63885", "lastModified": "2026-07-27T17:44:23.777", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.0, "impactScore": 6.0, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-07-19T16:17:05.623", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0dfa42cfe4dbe114533480503934f43e33c1e83d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7164d78559b0ff29931a366a840a9e5dd53d4b7c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cde2c9257cbe8463b9dcf7b1075177b72b5fd938"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: drm/gem: fix race between change_handle and handle_delete", "id": "2502367", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502367"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-366", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/gem: fix race between change_handle and handle_delete\ndrm_gem_change_handle_ioctl leaves the old handle live in the IDR\nduring the window between spin_unlock(table_lock) and the final\nspin_lock(table_lock). A concurrent drm_gem_handle_delete on the old\nhandle succeeds in this window, decrements handle_count to 0, and frees\nthe GEM object while the new handle's IDR entry still references it.\nNULL the old handle's IDR entry before dropping table_lock so that any\nconcurrent GEM_CLOSE on the old handle sees NULL and returns -EINVAL.\nRestore the old entry on the prime-bookkeeping error path.", "A flaw was found in the Linux kernel's Direct Rendering Manager (DRM) Graphics Execution Manager (GEM) component. A race condition, a situation where multiple operations occur in an unpredictable order, exists between the `change_handle` and `handle_delete` operations. This can allow a local attacker to free a Graphics Execution Manager (GEM) object while it is still being referenced by another handle. This could lead to a use-after-free vulnerability, potentially resulting in a denial of service or other impacts."], "name": "CVE-2026-63885", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-63885\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-63885\nhttps://lore.kernel.org/linux-cve-announce/2026071940-CVE-2026-63885-ad72@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[672464dd53231509c9c771110798c56d4660e19e,0dfa42cfe4dbe114533480503934f43e33c1e83d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[61bd96d3e5472c253f9c1ab77608f0c8aaa9d025,cde2c9257cbe8463b9dcf7b1075177b72b5fd938)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[5e28b7b94408897e41c63477aabc9e1db439bc8c,7164d78559b0ff29931a366a840a9e5dd53d4b7c)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.18.32,6.18.35)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[7.0.9,7.0.12)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-07-21T03:45:16.905437+00:00", "updated": "2026-08-04T07:00:05.858179+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}