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vuln-cve/data/2026/68xxx/CVE-2026-68258.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-68258",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-07-30T09:28:09.378Z",
"datePublished": "2026-08-10T12:01:32.149Z",
"dateUpdated": "2026-10-30T12:28:16.935Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-10-30T12:28:16.935Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Check bounds on CRIU restore queue 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)"
}
],
"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": "42c6c48214b726c30918e8dc80e2168607d13ae4",
"lessThan": "fd1691ec62701c982ea32e749678988c67fd4c21",
"status": "affected",
"versionType": "git"
},
{
"version": "42c6c48214b726c30918e8dc80e2168607d13ae4",
"lessThan": "cc10a5839756982504ee8568fc1e1625962ab7f8",
"status": "affected",
"versionType": "git"
},
{
"version": "42c6c48214b726c30918e8dc80e2168607d13ae4",
"lessThan": "47ea05f246bebc81c7796f56265cffd812cf0601",
"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/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": "5.18",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.18",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.191",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.160",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.114",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.42",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.1.6",
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.2",
"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": "5.18",
"versionEndExcluding": "6.1.191"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.18",
"versionEndExcluding": "6.6.160"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.18",
"versionEndExcluding": "6.12.114"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.18",
"versionEndExcluding": "6.18.42"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.18",
"versionEndExcluding": "7.1.6"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "5.18",
"versionEndExcluding": "7.2"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/dcd8f5e049ff31e73f91fbccd9a9b9d725a2ff3e"
},
{
"url": "https://git.kernel.org/stable/c/2b817c0dfc653bf33d0e0ab8155ff7807a617487"
},
{
"url": "https://git.kernel.org/stable/c/1956aa246c65c5895589664ccb37d0710aa8d304"
},
{
"url": "https://git.kernel.org/stable/c/fd1691ec62701c982ea32e749678988c67fd4c21"
},
{
"url": "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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