CVE-2026-72328

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72328", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.919Z", "datePublished": "2026-08-15T05:55:39.296Z", "dateUpdated": "2026-08-17T05:42:50.096Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:42:50.096Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/amdxdna: Fix potential amdxdna_umap lifetime race\n\namdxdna_umap_release() calls the blocking mmu_interval_notifier_remove()\nbefore removing the object from abo->mem.umap_list. If\naie2_populate_range() runs concurrently, it may obtain a reference to an\namdxdna_umap that is being released, leading to a potential use-after-free.\n\nUse kref_get_unless_zero() in aie2_populate_range() when acquiring a\nreference. If the reference count has already dropped to zero, release\nis in progress and the entry is skipped."}], "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 - Exploitation requires local DRM ioctls (AMDXDNA_EXEC_CMD) and mmap/munmap on the AMD XDNA NPU accel node (/dev/accel/accel* or renderD*); there is no network, adjacent-radio, or physical-bus path to aie2_populate_range().\nAC:L - This is a lifetime race between munmap-driven amdxdna_umap_release() and command-submit-driven aie2_populate_range(); the attacker controls both sides with concurrent threads (unmap/invalidate vs EXEC_CMD), so no timing or state outside attacker control is required.\nPR:L - Vulnerable ioctls (CREATE_BO, EXEC_CMD, mmap) are registered with DRM_IOCTL_DEF_DRV flags 0 (no DRM_ROOT_ONLY/DRM_AUTH); any unprivileged local user permitted to open the AMD NPU accel device on Ryzen AI systems can trigger the race.\nUI:N - The attacker opens the device, maps buffer objects, and races munmap/invalidation against their own EXEC_CMD submissions; no separate victim user action or interaction is required.\nS:U - The use-after-free corrupts kernel heap objects within the same kernel security authority; it is not a VM escape, hypervisor breakout, or IOMMU DMA-boundary bypass as a direct consequence of the flaw.\nC:H - Use-after-free of kmalloc amdxdna_umap lets attacker-controlled heap spray reclaim freed notifier/range metadata; subsequent hmm_range_fault() and mm_struct dereferences enable arbitrary kernel memory disclosure.\nI:H - UAF on amdxdna_umap gives attacker control over hmm_range and PFN tables used before NPU job submission, enabling heap grooming for arbitrary kernel writes and control-flow hijack toward local privilege escalation.\nA:H - The race dereferences and mutates freed amdxdna_umap and associated mm_struct/hmm_range state, reliably causing kernel oops/panic; repeated concurrent unmap/submit cycles sustain denial of service on the NPU host."}]}], "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"], "versions": [{"version": "e486147c912f653ef4b60a6c7dbd4168a4c56a9f", "lessThan": "267809e2c56fbea486f7250c8a4acddcc3c54dc5", "status": "affected", "versionType": "git"}, {"version": "e486147c912f653ef4b60a6c7dbd4168a4c56a9f", "lessThan": "91e8109ecffb925b6202d2737384df285b195bfb", "status": "affected", "versionType": "git"}, {"version": "e486147c912f653ef4b60a6c7dbd4168a4c56a9f", "lessThan": "14f172eff9c19f8043a9858845f33cd034f3a41e", "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"], "versions": [{"version": "6.16", "status": "affected"}, {"version": "0", "lessThan": "6.16", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "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": "6.18.40"}, {"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/267809e2c56fbea486f7250c8a4acddcc3c54dc5"}, {"url": "https://git.kernel.org/stable/c/91e8109ecffb925b6202d2737384df285b195bfb"}, {"url": "https://git.kernel.org/stable/c/14f172eff9c19f8043a9858845f33cd034f3a41e"}], "title": "accel/amdxdna: Fix potential amdxdna_umap lifetime race", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/accel/amdxdna/aie2_ctx.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "267809e2c56fbea486f7250c8a4acddcc3c54dc5", "status": "affected", "version": "e486147c912f653ef4b60a6c7dbd4168a4c56a9f", "versionType": "git"}, {"lessThan": "91e8109ecffb925b6202d2737384df285b195bfb", "status": "affected", "version": "e486147c912f653ef4b60a6c7dbd4168a4c56a9f", "versionType": "git"}, {"lessThan": "14f172eff9c19f8043a9858845f33cd034f3a41e", "status": "affected", "version": "e486147c912f653ef4b60a6c7dbd4168a4c56a9f", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/accel/amdxdna/aie2_ctx.c"], "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": "6.18.40", "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 potential amdxdna_umap lifetime race\n\namdxdna_umap_release() calls the blocking mmu_interval_notifier_remove()\nbefore removing the object from abo->mem.umap_list. If\naie2_populate_range() runs concurrently, it may obtain a reference to an\namdxdna_umap that is being released, leading to a potential use-after-free.\n\nUse kref_get_unless_zero() in aie2_populate_range() when acquiring a\nreference. If the reference count has already dropped to zero, release\nis in progress and the entry is skipped."}], "id": "CVE-2026-72328", "lastModified": "2026-08-17T06:18:36.353", "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": "2026-08-15T06:22:05.873", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/14f172eff9c19f8043a9858845f33cd034f3a41e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/267809e2c56fbea486f7250c8a4acddcc3c54dc5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/91e8109ecffb925b6202d2737384df285b195bfb"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: accel/amdxdna: Fix potential amdxdna_umap lifetime race", "id": "2516675", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516675"}, "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 Linux kernel's `accel/amdxdna` component. A race condition exists where the `aie2_populate_range()` function can attempt to use an `amdxdna_umap` object that is simultaneously being released. This concurrent access may lead to a use-after-free vulnerability, which could result in denial of service or potentially privilege escalation."], "name": "CVE-2026-72328", "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-2026-72328\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72328\nhttps://lore.kernel.org/linux-cve-announce/2026081507-CVE-2026-72328-4c7f@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e486147c912f653ef4b60a6c7dbd4168a4c56a9f,267809e2c56fbea486f7250c8a4acddcc3c54dc5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e486147c912f653ef4b60a6c7dbd4168a4c56a9f,91e8109ecffb925b6202d2737384df285b195bfb)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[e486147c912f653ef4b60a6c7dbd4168a4c56a9f,14f172eff9c19f8043a9858845f33cd034f3a41e)"}}], "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": "[6.18.40,6.19.0)"}}, {"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": "2026-08-15T18:45:03.374014+00:00", "updated": "2026-08-22T11:00:04.396343+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}