CVE-2026-64008

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64008", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T07:54:57.026Z", "datePublished": "2026-07-19T14:56:23.746Z", "dateUpdated": "2026-08-05T12:38:08.050Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:38:08.050Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/rocket: fix UAF via dangling GEM handle in create_bo\n\nrocket_ioctl_create_bo() inserts a GEM handle into the file's IDR via\ndrm_gem_handle_create() early on, then performs several operations that\ncan fail (sgt allocation, drm_mm insert, iommu_map). If any fail after\nthe handle is live, the error path calls drm_gem_shmem_object_free()\nwhich kfree's the object without removing the handle from the IDR.\n\nThis leaves a dangling handle pointing to freed slab memory. Any\nsubsequent ioctl using that handle (PREP_BO, FINI_BO, SUBMIT) calls\ndrm_gem_object_lookup() and dereferences freed memory (UAF).\n\nFix by moving drm_gem_handle_create() to after all fallible operations\nsucceed, matching the pattern used by panfrost, lima, and etnaviv.\n\nAlso fix drm_mm_insert_node_generic() whose return value was silently\noverwritten by iommu_map_sgtable() on the next line. Add the missing\nerror check.\n\n[tomeu: Move handle creation to the very end]"}], "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 reached only through DRM ioctls on the local /dev/accel/accel* character device; there is no network, adjacent-wireless, or physical bus path to rocket_ioctl_create_bo().\nAC:L - An attacker fully controls both steps\u2014forcing CREATE_BO to fail after handle insertion (e.g., by exhausting the per-fd IOMMU drm_mm aperture or triggering sgt/iommu_map errors) and then issuing PREP_BO/FINI_BO/SUBMIT with the returned dangling handle\u2014without depending on external timing or victim state.\nPR:L - All rocket ioctls are registered with DRM_IOCTL_DEF_DRV flags 0 (no DRM_ROOT_ONLY/DRM_AUTH/DRM_MASTER), requiring only the ability to open the accel device node, which is standard unprivileged local access on RK3588 edge-AI/embedded systems running ML workloads.\nUI:N - Exploitation requires no action from a separate victim; the attacker creates the dangling handle and triggers the UAF through their own ioctl sequence on a device they opened.\nS:U - Impact is kernel heap UAF leading to local privilege escalation or crash within the same kernel security authority; it is not a VM escape, IOMMU DMA-boundary bypass, or cross-hypervisor attack.\nC:H - The dangling GEM handle causes use-after-free of a kmalloc'd rocket_gem_object; subsequent lookups dereference freed slab memory (resv, sgt, mm node fields), enabling arbitrary kernel memory read via heap grooming.\nI:H - UAF on the GEM object structure allows heap spraying to corrupt kernel metadata and control flow; the SUBMIT ioctl path further processes corrupted BO pointers for NPU job scheduling, supporting arbitrary write and code execution primitives.\nA:H - UAF dereferences in PREP_BO/FINI_BO/SUBMIT reliably cause kernel oops/panic, and the dangling-handle condition is repeatable for sustained 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/accel/rocket/rocket_gem.c"], "versions": [{"version": "658ebeac33517bd3169d4b65ed801e9065d0211a", "lessThan": "18abd88d19ea195e2e1547fca0970c2f91d77a42", "status": "affected", "versionType": "git"}, {"version": "658ebeac33517bd3169d4b65ed801e9065d0211a", "lessThan": "451f1ccbbdb7b65021646704b15902655f8d228a", "status": "affected", "versionType": "git"}, {"version": "658ebeac33517bd3169d4b65ed801e9065d0211a", "lessThan": "f706e6a4ce75585af979aec3dcbdce68bc76306b", "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/accel/rocket/rocket_gem.c"], "versions": [{"version": "6.18", "status": "affected"}, {"version": "0", "lessThan": "6.18", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.35", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.12", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "6.18", "versionEndExcluding": "6.18.35"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18", "versionEndExcluding": "7.0.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.18", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/18abd88d19ea195e2e1547fca0970c2f91d77a42"}, {"url": "https://git.kernel.org/stable/c/451f1ccbbdb7b65021646704b15902655f8d228a"}, {"url": "https://git.kernel.org/stable/c/f706e6a4ce75585af979aec3dcbdce68bc76306b"}], "title": "accel/rocket: fix UAF via dangling GEM handle in create_bo", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/accel/rocket/rocket_gem.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "18abd88d19ea195e2e1547fca0970c2f91d77a42", "status": "affected", "version": "658ebeac33517bd3169d4b65ed801e9065d0211a", "versionType": "git"}, {"lessThan": "451f1ccbbdb7b65021646704b15902655f8d228a", "status": "affected", "version": "658ebeac33517bd3169d4b65ed801e9065d0211a", "versionType": "git"}, {"lessThan": "f706e6a4ce75585af979aec3dcbdce68bc76306b", "status": "affected", "version": "658ebeac33517bd3169d4b65ed801e9065d0211a", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/accel/rocket/rocket_gem.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.18"}, {"lessThan": "6.18", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.35", "versionType": "semver"}, {"lessThanOrEqual": "7.0.*", "status": "unaffected", "version": "7.0.12", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0E88D8B7-C561-47E8-9996-E916A7ACF85E", "versionEndExcluding": "6.18.35", "versionStartIncluding": "6.18", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "9161A938-0FA8-44BC-95FE-C5A271601AB3", "versionEndExcluding": "7.0.12", "versionStartIncluding": "6.19", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*", "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*", "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*", "matchCriteriaId": "EC732D08-5F7B-46D9-B154-E60C7F4F0A97", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*", "matchCriteriaId": "E5910A9D-F60A-409A-B486-FE66BFEBA9B9", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:*", "matchCriteriaId": "81DFF19E-9CF8-49C6-8C36-1E4038622933", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/rocket: fix UAF via dangling GEM handle in create_bo\n\nrocket_ioctl_create_bo() inserts a GEM handle into the file's IDR via\ndrm_gem_handle_create() early on, then performs several operations that\ncan fail (sgt allocation, drm_mm insert, iommu_map). If any fail after\nthe handle is live, the error path calls drm_gem_shmem_object_free()\nwhich kfree's the object without removing the handle from the IDR.\n\nThis leaves a dangling handle pointing to freed slab memory. Any\nsubsequent ioctl using that handle (PREP_BO, FINI_BO, SUBMIT) calls\ndrm_gem_object_lookup() and dereferences freed memory (UAF).\n\nFix by moving drm_gem_handle_create() to after all fallible operations\nsucceed, matching the pattern used by panfrost, lima, and etnaviv.\n\nAlso fix drm_mm_insert_node_generic() whose return value was silently\noverwritten by iommu_map_sgtable() on the next line. Add the missing\nerror check.\n\n[tomeu: Move handle creation to the very end]"}], "id": "CVE-2026-64008", "lastModified": "2026-10-02T19:55:18.030", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-07-19T16:17:40.557", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/18abd88d19ea195e2e1547fca0970c2f91d77a42"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/451f1ccbbdb7b65021646704b15902655f8d228a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f706e6a4ce75585af979aec3dcbdce68bc76306b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: accel/rocket: fix UAF via dangling GEM handle in create_bo", "id": "2502454", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502454"}, "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-825", "details": ["In the Linux kernel, the following vulnerability has been resolved:\naccel/rocket: fix UAF via dangling GEM handle in create_bo\nrocket_ioctl_create_bo() inserts a GEM handle into the file's IDR via\ndrm_gem_handle_create() early on, then performs several operations that\ncan fail (sgt allocation, drm_mm insert, iommu_map). If any fail after\nthe handle is live, the error path calls drm_gem_shmem_object_free()\nwhich kfree's the object without removing the handle from the IDR.\nThis leaves a dangling handle pointing to freed slab memory. Any\nsubsequent ioctl using that handle (PREP_BO, FINI_BO, SUBMIT) calls\ndrm_gem_object_lookup() and dereferences freed memory (UAF).\nFix by moving drm_gem_handle_create() to after all fallible operations\nsucceed, matching the pattern used by panfrost, lima, and etnaviv.\nAlso fix drm_mm_insert_node_generic() whose return value was silently\noverwritten by iommu_map_sgtable() on the next line. Add the missing\nerror check.\n[tomeu: Move handle creation to the very end]", "A flaw was found in the accel/rocket component of the Linux kernel. This vulnerability, a Use-After-Free (UAF), occurs in the rocket_ioctl_create_bo() function. A local attacker could exploit this by triggering a failure in subsequent operations after a Graphics Execution Manager (GEM) handle is created, leading to a dangling pointer to freed memory. This allows the attacker to dereference freed memory, which can result in system instability or potentially lead to privilege escalation."], "name": "CVE-2026-64008", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "impact": "important", "package_name": "erlang27", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-07-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-64008\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-64008\nhttps://lore.kernel.org/linux-cve-announce/2026071908-CVE-2026-64008-8d40@gregkh/T"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[658ebeac33517bd3169d4b65ed801e9065d0211a,18abd88d19ea195e2e1547fca0970c2f91d77a42)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[658ebeac33517bd3169d4b65ed801e9065d0211a,451f1ccbbdb7b65021646704b15902655f8d228a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[658ebeac33517bd3169d4b65ed801e9065d0211a,f706e6a4ce75585af979aec3dcbdce68bc76306b)"}}], "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"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.18)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.35,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.12,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1,*]"}}], "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": "2026-07-21T09:45:03.991783+00:00", "updated": "2026-10-02T21:45:18.382569+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-416", "CWE-825"]}