CVE-2026-72331

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72331", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.919Z", "datePublished": "2026-08-15T05:55:41.196Z", "dateUpdated": "2026-10-15T10:08:34.107Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-15T10:08:34.107Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/amdxdna: Fix VMA access race\n\naie2_populate_range() and amdxdna_umap_release() access a saved VMA\npointer that may have already been freed, leading to a potential\nuse-after-free.\n\nRemove the VMA accesses from these functions to avoid the race."}], "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 via local syscalls on the AMD XDNA DRM accel render node (open, DRM_IOCTL_AMDXDNA_CREATE_BO/EXEC_CMD, mmap/munmap) in drivers/accel/amdxdna; there is no network-facing handler.\nAC:L - The UAF is a mmap/munmap versus deferred amdxdna_umap_release/aie2_populate_range race; a local attacker controls both sides with concurrent threads and can reliably trigger MMU_NOTIFY_UNMAP while work still holds a stale vma pointer.\nPR:L - All vulnerable ioctls use DRM_AUTH (flag 0) and only DRM_ROOT_ONLY SET_STATE is excluded; exploitation needs local access to the render node, which unprivileged users typically have via the render group, not real root.\nUI:N - No victim interaction is required; the attacker opens the device, imports/maps buffers, and races munmap or command submission in their own process to hit the freed VMA.\nS:U - Impact is kernel heap corruption and privilege escalation within the host kernel via a local DRM client; it does not cross a VM, container, or IOMMU security boundary.\nC:H - Use-after-free of a freed vm_area_struct and vm_file in amdxdna_umap_release (and stale vma reads in aie2_populate_range) can expose adjacent kernel memory and be weaponized for arbitrary kernel read primitives.\nI:H - UAF on vma/vm_file during mapping_clear_unevictable enables corrupting kernel objects and control data, supporting heap grooming and arbitrary kernel write or code execution for local privilege escalation.\nA:H - Dereferencing a freed VMA in kernel context can cause oops/panic or wedged NPU workloads; UAF in this path is independently sufficient for complete local denial of service even if exploitation fails."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/accel/amdxdna/aie2_ctx.c", "drivers/accel/amdxdna/amdxdna_gem.c", "drivers/accel/amdxdna/amdxdna_gem.h"], "versions": [{"version": "e486147c912f653ef4b60a6c7dbd4168a4c56a9f", "lessThan": "3dd12422653ad4bbbebe33c49c67dba4c653c804", "status": "affected", "versionType": "git"}, {"version": "e486147c912f653ef4b60a6c7dbd4168a4c56a9f", "lessThan": "bea20225c67fed9be3e98619c77af6ee3f43fe07", "status": "affected", "versionType": "git"}, {"version": "e486147c912f653ef4b60a6c7dbd4168a4c56a9f", "lessThan": "1ba02717e821cf14ece642273958647e79698d3d", "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/aie2_ctx.c", "drivers/accel/amdxdna/amdxdna_gem.c", "drivers/accel/amdxdna/amdxdna_gem.h"], "versions": [{"version": "6.16", "status": "affected"}, {"version": "0", "lessThan": "6.16", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.57", "lessThanOrEqual": "6.18.*", "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": "6.16", "versionEndExcluding": "6.18.57"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/3dd12422653ad4bbbebe33c49c67dba4c653c804"}, {"url": "https://git.kernel.org/stable/c/bea20225c67fed9be3e98619c77af6ee3f43fe07"}, {"url": "https://git.kernel.org/stable/c/1ba02717e821cf14ece642273958647e79698d3d"}], "title": "accel/amdxdna: Fix VMA access race", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/accel/amdxdna/aie2_ctx.c", "drivers/accel/amdxdna/amdxdna_gem.c", "drivers/accel/amdxdna/amdxdna_gem.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "3dd12422653ad4bbbebe33c49c67dba4c653c804", "status": "affected", "version": "e486147c912f653ef4b60a6c7dbd4168a4c56a9f", "versionType": "git"}, {"lessThan": "bea20225c67fed9be3e98619c77af6ee3f43fe07", "status": "affected", "version": "e486147c912f653ef4b60a6c7dbd4168a4c56a9f", "versionType": "git"}, {"lessThan": "1ba02717e821cf14ece642273958647e79698d3d", "status": "affected", "version": "e486147c912f653ef4b60a6c7dbd4168a4c56a9f", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/accel/amdxdna/aie2_ctx.c", "drivers/accel/amdxdna/amdxdna_gem.c", "drivers/accel/amdxdna/amdxdna_gem.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.16"}, {"lessThan": "6.16", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.57", "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 VMA access race\n\naie2_populate_range() and amdxdna_umap_release() access a saved VMA\npointer that may have already been freed, leading to a potential\nuse-after-free.\n\nRemove the VMA accesses from these functions to avoid the race."}], "id": "CVE-2026-72331", "lastModified": "2026-10-15T11:17:42.747", "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": "2026-08-15T06:22:06.200", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1ba02717e821cf14ece642273958647e79698d3d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3dd12422653ad4bbbebe33c49c67dba4c653c804"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bea20225c67fed9be3e98619c77af6ee3f43fe07"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: accel/amdxdna: Fix VMA access race", "id": "2516520", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516520"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["A flaw was found in the `accel/amdxdna` component of the Linux kernel. The `aie2_populate_range()` and `amdxdna_umap_release()` functions access a saved Virtual Memory Area (VMA) pointer that may have already been freed. This race condition can lead to a use-after-free vulnerability, which could result in system instability or potentially allow a local attacker to escalate privileges."], "name": "CVE-2026-72331", "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"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72331\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72331\nhttps://lore.kernel.org/linux-cve-announce/2026081508-CVE-2026-72331-88e3@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e486147c912f653ef4b60a6c7dbd4168a4c56a9f,bea20225c67fed9be3e98619c77af6ee3f43fe07)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e486147c912f653ef4b60a6c7dbd4168a4c56a9f,1ba02717e821cf14ece642273958647e79698d3d)"}}], "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": "generic", "value": "6.16"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.16)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"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": "2026-08-15T18:45:03.373690+00:00", "updated": "2026-08-22T08:15:03.809721+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}