256 lines
13 KiB
JSON
256 lines
13 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-72449",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-08-09T03:40:39.931Z",
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"datePublished": "2026-08-15T05:56:58.313Z",
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"dateUpdated": "2026-10-16T18:55:24.681Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-17T05:44:18.630Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: fix list_del corruption in kfd_criu_resume_svm\n\nThe cleanup tail of kfd_criu_resume_svm() walks\nsvms->criu_svm_metadata_list and kfree()s each struct criu_svm_metadata\nwithout removing it from the list. The list head is left pointing at\nfreed kmalloc-96 objects.\n\nA second AMDKFD_IOC_CRIU_OP from the same process re-enters: list_empty()\nreads the dangling ->next (use-after-free), the loop walks freed entries,\nand each is kfree()'d again (double-free). This is reachable by an\nunprivileged render-group user via /dev/kfd with no capabilities required.\n\nAdd list_del() before the kfree() so the list is properly emptied. The\nlist_for_each_entry_safe() iterator already caches the next pointer, so\nunlinking during the walk is safe.\n\n(cherry picked from commit 6322d278a298e2c1430b9d2697743d3a04b788b1)"
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The bug is reached only via the local AMDKFD_IOC_CRIU_OP ioctl on /dev/kfd (unlocked_ioctl -> kfd_ioctl_criu -> criu_resume -> kfd_criu_resume_svm); there is no network, adjacent-radio, or physical-device entry path.\nAC:L - An attacker who can open /dev/kfd controls the full CRIU restore/resume ioctl sequence and can deterministically trigger the bug by issuing KFD_CRIU_OP_RESUME twice after restore populates criu_svm_metadata_list; no uncontrollable race or rare layout is required.\nPR:L - The fix commit and ioctl path show exploitation by a local render-group user opening /dev/kfd; CAP_CHECKPOINT_RESTORE/SYS_ADMIN gates CRIU ioctls but are obtainable in a user namespace, matching basic local user privilege rather than init-namespace root only.\nUI:N - Exploitation requires only the attacker's own ioctl calls to /dev/kfd after CRIU restore; no victim click, mount, file open, or other interactive action is needed.\nS:U - Corruption is confined to kernel heap list metadata in amdkfd for the calling KFD process context; impact stays within the kernel security authority and does not cross a VM, IOMMU, or hypervisor boundary.\nC:H - After the first resume, list_empty() and list iteration dereference freed kmalloc-96 criu_svm_metadata objects (use-after-free reads of ->next/list pointers), enabling attacker-influenced heap disclosure beyond a bounded leak.\nI:H - A second resume walks the corrupted list and kfree()s the same objects again (double-free on kmalloc-96 slabs), a standard exploitable kernel heap primitive for arbitrary memory corruption and potential privilege escalation.\nA:H - The use-after-free and double-free reliably corrupt kernel heap state and commonly cause BUG/KASAN faults, oops, or panic when the dangling list is traversed again, producing system-wide denial of service."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/gpu/drm/amd/amdkfd/kfd_svm.c"
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],
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"versions": [
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{
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"version": "2a909ae718715b3bac75d945e38dc0a5e4a0f1ba",
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"lessThan": "c8a8d350a273c005a48c64c4519d21b2a51c5ceb",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "2a909ae718715b3bac75d945e38dc0a5e4a0f1ba",
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"lessThan": "506e635aed05dbdeef11e3c59f6e42980cda5b6d",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "2a909ae718715b3bac75d945e38dc0a5e4a0f1ba",
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"lessThan": "838b57b3e7ce8cce0fda56d0861add3d464dd6c8",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "2a909ae718715b3bac75d945e38dc0a5e4a0f1ba",
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"lessThan": "96ac562a9ea3020981f536384711190841c81aa8",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "2a909ae718715b3bac75d945e38dc0a5e4a0f1ba",
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"lessThan": "e33a3bd5cb8d0cf1557dee014115f812c9686130",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "2a909ae718715b3bac75d945e38dc0a5e4a0f1ba",
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"lessThan": "8fa5655da368d0306c03e9dc9cda8ae2a7840926",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/gpu/drm/amd/amdkfd/kfd_svm.c"
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],
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"versions": [
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{
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"version": "5.18",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.18",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.178",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.145",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.97",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.40",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1.5",
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"lessThanOrEqual": "7.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.18",
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"versionEndExcluding": "6.1.178"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.18",
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"versionEndExcluding": "6.6.145"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.18",
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"versionEndExcluding": "6.12.97"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.18",
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"versionEndExcluding": "6.18.40"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.18",
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"versionEndExcluding": "7.1.5"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.18",
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"versionEndExcluding": "7.2"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/c8a8d350a273c005a48c64c4519d21b2a51c5ceb"
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},
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{
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"url": "https://git.kernel.org/stable/c/506e635aed05dbdeef11e3c59f6e42980cda5b6d"
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},
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{
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"url": "https://git.kernel.org/stable/c/838b57b3e7ce8cce0fda56d0861add3d464dd6c8"
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},
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{
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"url": "https://git.kernel.org/stable/c/96ac562a9ea3020981f536384711190841c81aa8"
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},
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{
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"url": "https://git.kernel.org/stable/c/e33a3bd5cb8d0cf1557dee014115f812c9686130"
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},
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{
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"url": "https://git.kernel.org/stable/c/8fa5655da368d0306c03e9dc9cda8ae2a7840926"
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}
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],
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"title": "drm/amdkfd: fix list_del corruption in kfd_criu_resume_svm",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-72449",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T18:50:12.270854Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-16T18:55:24.681Z"
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}
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}
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]
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}
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} |