{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80608", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.773Z", "datePublished": "2026-08-28T06:48:32.152Z", "dateUpdated": "2026-08-29T06:21:18.093Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-29T06:21:18.093Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/amdxdna: Fix iommu domain lifetime race during device removal\n\nWhen force_iova mode is enabled, amdxdna_remove() frees xdna->domain. If\namdxdna_gem_obj_free() is called after device removal, it may attempt to\naccess xdna->domain, resulting in a use-after-free.\n\nFix the race by adding freeing xdna->domain as a managed release action,\nso its lifetime is managed by DRM and remains valid until all managed\nresources are released."}], "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 - The UAF is reached via local /dev/accel/accel* syscalls (open, DRM_IOCTL_AMDXDNA_CREATE_BO, close) that call amdxdna_gem_obj_free()\u2192amdxdna_dma_unmap_bo(); there is no network, adjacent-radio, or physical-bus entry to this AMD XDNA NPU driver path.\nAC:L - This is a lifetime race between amdxdna_remove() freeing xdna->domain and concurrent GEM teardown; an attacker controls both sides with threads holding DMA-mapped BOs while triggering driver unbind/rmmod or rapid create/destroy ioctls, reliably hitting the post-removal amdxdna_dma_unmap_bo() UAF window.\nPR:L - Vulnerable ioctls use DRM_IOCTL_DEF_DRV flags 0 (no DRM_ROOT_ONLY/DRM_AUTH); any local user permitted to open the AMD NPU accel device on Ryzen AI systems can create IOVA-mapped BOs and race teardown, without init-namespace root, once force_iova mode is active.\nUI:N - Exploitation requires only the attacker opening the accel device, allocating buffer objects, and closing/releasing them (or duping fds) during driver removal; no separate victim mount, click, or other user interaction is needed.\nS:C - The use-after-free dereferences a freed struct iommu_domain during iommu_unmap()/IOVA teardown; corrupting IOMMU mapping state can break DMA isolation between the NPU and host physical memory, crossing the IOMMU security boundary.\nC:H - Use-after-free of the IOMMU domain object and associated iovad metadata via amdxdna_dma_unmap_bo() enables attacker-influenced slab reuse; subsequent iommu_unmap and IOVA allocator dereferences provide arbitrary kernel memory disclosure primitives.\nI:H - UAF on the IOMMU domain during unmap enables heap grooming to corrupt IOMMU page-table management structures and kernel objects, supporting arbitrary kernel writes, control-flow hijack, and potential redirection of NPU DMA to attacker-chosen pages.\nA:H - Dereferencing and operating on a freed iommu_domain in amdxdna_dma_unmap_bo() causes kernel oops/panic; the race is repeatable whenever GEM objects outlive amdxdna_iommu_fini() during device removal, sustaining 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/amdxdna/amdxdna_iommu.c"], "versions": [{"version": "ece3e8980907818c72dc9faa7bbaf40488ef1824", "lessThan": "65e7e2b8d71b418439ebc68e80ed3e5a325375d6", "status": "affected", "versionType": "git"}, {"version": "ece3e8980907818c72dc9faa7bbaf40488ef1824", "lessThan": "b4a0500fdf6e61a6c5f92ff2e61bc91578075803", "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/amdxdna/amdxdna_iommu.c"], "versions": [{"version": "7.1", "status": "affected"}, {"version": "0", "lessThan": "7.1", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "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": "7.1", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.1", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/65e7e2b8d71b418439ebc68e80ed3e5a325375d6"}, {"url": "https://git.kernel.org/stable/c/b4a0500fdf6e61a6c5f92ff2e61bc91578075803"}], "title": "accel/amdxdna: Fix iommu domain lifetime race during device removal", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/accel/amdxdna/amdxdna_iommu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "65e7e2b8d71b418439ebc68e80ed3e5a325375d6", "status": "affected", "version": "ece3e8980907818c72dc9faa7bbaf40488ef1824", "versionType": "git"}, {"lessThan": "b4a0500fdf6e61a6c5f92ff2e61bc91578075803", "status": "affected", "version": "ece3e8980907818c72dc9faa7bbaf40488ef1824", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/accel/amdxdna/amdxdna_iommu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "7.1"}, {"lessThan": "7.1", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/amdxdna: Fix iommu domain lifetime race during device removal\n\nWhen force_iova mode is enabled, amdxdna_remove() frees xdna->domain. If\namdxdna_gem_obj_free() is called after device removal, it may attempt to\naccess xdna->domain, resulting in a use-after-free.\n\nFix the race by adding freeing xdna->domain as a managed release action,\nso its lifetime is managed by DRM and remains valid until all managed\nresources are released."}], "id": "CVE-2026-80608", "lastModified": "2026-08-29T07:16:45.750", "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": "2026-08-28T08:16:44.777", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/65e7e2b8d71b418439ebc68e80ed3e5a325375d6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b4a0500fdf6e61a6c5f92ff2e61bc91578075803"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}