CVE-2026-68258

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expectations.\n\n(cherry picked from commit f19d8086f6644083c913d70bfdeee20e1b6f46a5)"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerable code is reached only through the AMDKFD_IOC_CRIU_OP ioctl on the local /dev/kfd character device; there is no remote or adjacent-network path into amdkfd CRIU restore handling.\nAC:L - The attacker directly supplies mqd_size and type in the CRIU private data, so a single ioctl deterministically triggers the over-read or the ZERO_SIZE_PTR dereference; restore runs under p->mutex so no race must be won.\nPR:L - The attacker needs /dev/kfd access (render group) plus CAP_CHECKPOINT_RESTORE or CAP_SYS_ADMIN; CAP_CHECKPOINT_RESTORE is a delegated, non-root capability routinely granted to CRIU tooling and container checkpoint/restore services, so this is a limited privilege rather than full administrative control.\nUI:N - The attacker issues the CRIU restore and checkpoint ioctls entirely against its own KFD process context; no action by another user or victim process is required.\nS:U - The out-of-bounds read and resulting crash stay within the kernel's own security authority on the host; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - restore_mqd() memcpy's a full ASIC MQD (e.g. sizeof(struct v9_mqd)) out of a kmalloc buffer sized by the attacker's smaller mqd_size, and criu_checkpoint_queues_device() then copies the entire MQD back to userspace, disclosing adjacent kernel slab contents.\nI:N - The destination MQD buffer is allocated by the mqd manager at its own correct size and ctl_stack_size is validated against node_props, so nothing is written out of bounds; the defect is purely a source-side over-read.\nA:H - With mqd_size and ctl_stack_size both zero, kmalloc(0) returns ZERO_SIZE_PTR and the memcpy faults reading address 0x10 while dqm_lock is held, oopsing the kernel; an out-of-range queue type also trips WARN(), panicking systems with panic_on_warn."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c", "drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h", "drivers/gpu/drm/amd/amdkfd/kfd_priv.h", "drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c"], "versions": [{"version": "42c6c48214b726c30918e8dc80e2168607d13ae4", "lessThan": "dcd8f5e049ff31e73f91fbccd9a9b9d725a2ff3e", "status": "affected", "versionType": "git"}, {"version": "42c6c48214b726c30918e8dc80e2168607d13ae4", "lessThan": "2b817c0dfc653bf33d0e0ab8155ff7807a617487", "status": "affected", "versionType": "git"}, {"version": "42c6c48214b726c30918e8dc80e2168607d13ae4", "lessThan": "1956aa246c65c5895589664ccb37d0710aa8d304", "status": "affected", "versionType": "git"}, {"version": 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"https://git.kernel.org/stable/c/cc10a5839756982504ee8568fc1e1625962ab7f8"}, {"url": "https://git.kernel.org/stable/c/47ea05f246bebc81c7796f56265cffd812cf0601"}], "title": "drm/amdkfd: Check bounds on CRIU restore queue type and mqd size", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-68258", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-16T15:46:19.338740Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-20", "description": "CWE-20 Improper Input Validation"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-19T20:58:58.519Z"}}]}}

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/dev/kfd character device; there is no remote or adjacent-network path into amdkfd CRIU restore handling.\nAC:L - The attacker directly supplies mqd_size and type in the CRIU private data, so a single ioctl deterministically triggers the over-read or the ZERO_SIZE_PTR dereference; restore runs under p->mutex so no race must be won.\nPR:L - The attacker needs /dev/kfd access (render group) plus CAP_CHECKPOINT_RESTORE or CAP_SYS_ADMIN; CAP_CHECKPOINT_RESTORE is a delegated, non-root capability routinely granted to CRIU tooling and container checkpoint/restore services, so this is a limited privilege rather than full administrative control.\nUI:N - The attacker issues the CRIU restore and checkpoint ioctls entirely against its own KFD process context; no action by another user or victim process is required.\nS:U - The out-of-bounds read and resulting crash stay within the kernel's own security authority on the host; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - restore_mqd() memcpy's a full ASIC MQD (e.g. sizeof(struct v9_mqd)) out of a kmalloc buffer sized by the attacker's smaller mqd_size, and criu_checkpoint_queues_device() then copies the entire MQD back to userspace, disclosing adjacent kernel slab contents.\nI:N - The destination MQD buffer is allocated by the mqd manager at its own correct size and ctl_stack_size is validated against node_props, so nothing is written out of bounds; the defect is purely a source-side over-read.\nA:H - With mqd_size and ctl_stack_size both zero, kmalloc(0) returns ZERO_SIZE_PTR and the memcpy faults reading address 0x10 while dqm_lock is held, oopsing the kernel; an out-of-range queue type also trips WARN(), panicking systems with panic_on_warn."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "42c6c48214b726c30918e8dc80e2168607d13ae4", "lessThan": "dcd8f5e049ff31e73f91fbccd9a9b9d725a2ff3e", "versionType": "git"}, {"status": "affected", "version": "42c6c48214b726c30918e8dc80e2168607d13ae4", "lessThan": "2b817c0dfc653bf33d0e0ab8155ff7807a617487", "versionType": "git"}, {"status": "affected", "version": "42c6c48214b726c30918e8dc80e2168607d13ae4", "lessThan": "1956aa246c65c5895589664ccb37d0710aa8d304", "versionType": "git"}, {"status": "affected", "version": "42c6c48214b726c30918e8dc80e2168607d13ae4", "lessThan": "fd1691ec62701c982ea32e749678988c67fd4c21", "versionType": "git"}, {"status": "affected", "version": "42c6c48214b726c30918e8dc80e2168607d13ae4", "lessThan": "cc10a5839756982504ee8568fc1e1625962ab7f8", "versionType": "git"}, {"status": "affected", "version": "42c6c48214b726c30918e8dc80e2168607d13ae4", "lessThan": "47ea05f246bebc81c7796f56265cffd812cf0601", "versionType": "git"}], "programFiles": ["drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c", "drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h", 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type and mqd size\n\nWe weren't checking whether the values provided in the private\ndata in kfd CRIU restore were within bounds.\n\nFor queue type, add a KFD_QUEUE_TYPE_MAX and ensure the provided\ntype is less than it.\n\nFor mqd_size, add new function mqd_size_from_queue_type and confirm\nthat the provided mqd_size matches expectations.\n\n(cherry picked from commit f19d8086f6644083c913d70bfdeee20e1b6f46a5)"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.191", "versionStartIncluding": "5.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.160", "versionStartIncluding": "5.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.114", "versionStartIncluding": "5.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", 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"2026-10-16T15:46:19.338740Z", "version": "2.0.3"}}]}, "published": "2026-08-10T13:20:14.483", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1956aa246c65c5895589664ccb37d0710aa8d304"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2b817c0dfc653bf33d0e0ab8155ff7807a617487"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/47ea05f246bebc81c7796f56265cffd812cf0601"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cc10a5839756982504ee8568fc1e1625962ab7f8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/dcd8f5e049ff31e73f91fbccd9a9b9d725a2ff3e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fd1691ec62701c982ea32e749678988c67fd4c21"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: Linux kernel (drm/amdkfd): Memory safety vulnerability in CRIU restore", "id": "2513325", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513325"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/amdkfd: Check bounds on CRIU restore queue type and mqd size\nWe weren't checking whether the values provided in the private\ndata in kfd CRIU restore were within bounds.\nFor queue type, add a KFD_QUEUE_TYPE_MAX and ensure the provided\ntype is less than it.\nFor mqd_size, add new function mqd_size_from_queue_type and confirm\nthat the provided mqd_size matches expectations.\n(cherry picked from commit f19d8086f6644083c913d70bfdeee20e1b6f46a5)", "A flaw was found in the `drm/amdkfd` component of the Linux kernel. This vulnerability allows a local attacker to provide out-of-bounds values in the private data during a kfd CRIU restore operation. This improper input validation could lead to a memory safety issue, potentially resulting in a denial of service or information disclosure."], "name": "CVE-2026-68258", "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"}, {"cpe": "cpe:/a:redhat:enterprise_linux_nvidia:", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux for NVIDIA 26"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-08-10T12:01:32Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68258\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68258\nhttps://git.kernel.org/stable/c/47ea05f246bebc81c7796f56265cffd812cf0601\nhttps://git.kernel.org/stable/c/cc10a5839756982504ee8568fc1e1625962ab7f8\nhttps://git.kernel.org/stable/c/fd1691ec62701c982ea32e749678988c67fd4c21"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,fd1691ec62701c982ea32e749678988c67fd4c21)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,cc10a5839756982504ee8568fc1e1625962ab7f8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,47ea05f246bebc81c7796f56265cffd812cf0601)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.18.42)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,7.1.6)"}}], "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": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.42,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc3,*]"}}], "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": "2026-08-10T17:45:04.459940+00:00", "updated": "2026-10-20T13:30:06.277668+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}