CVE-2026-68380

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68380", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.387Z", "datePublished": "2026-08-10T12:03:58.536Z", "dateUpdated": "2026-08-17T05:04:26.414Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:04:26.414Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/amdxdna: Fix use-after-free of mm_struct in job scheduler\n\namdxdna_cmd_submit() stores current->mm in job->mm without holding any\nreference. aie2_sched_job_run() later access job->mm from the DRM\nscheduler worker thread. With only a raw pointer and no structural\nreference, the mm_struct can be freed before the scheduler runs the job.\n\nFix this by calling mmgrab() to hold a structural mm_count reference for\nthe lifetime of the job, paired with mmdrop() in every cleanup path."}], "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 vulnerable path is the AMDXDNA_EXEC_CMD ioctl on the /dev/accel/accel* accel/DRM node, requiring local access to the device file; there is no remote or adjacent-network entry point into the NPU job scheduler.\nAC:L - The attacker controls both sides of the lifetime race: it can saturate the hwctx job semaphore with long-running commands to keep jobs queued, then submit from a forked task sharing the fd and exit that task so its mm_struct is freed while the job is still pending. No condition outside attacker control is needed.\nPR:L - The EXEC_CMD ioctl is registered with no privilege flags (unlike SET_STATE which is DRM_ROOT_ONLY), so any unprivileged local user holding an open handle to the accel render node can submit jobs and trigger the bug.\nUI:N - Exploitation is entirely driven by the attacker's own process tree (open, submit, fork, exit); no victim action or interaction with any other user is required.\nS:U - The use-after-free corrupts kernel memory within the same kernel security authority; there is no crossing of a VM, IOMMU or sandbox boundary as a direct consequence of the flaw.\nC:H - The freed mm_struct is reallocated from a general kernel cache, and the driver's continued use of it (mmget_not_zero, later mmput_async/__mmput walking page tables) gives an attacker who sprays the reclaimed slot a path to disclose arbitrary kernel memory.\nI:H - mmget_not_zero() performs an atomic increment into freed memory and mmput_async() can drive a reclaimed object through __mmput()/exit_mmap(), yielding controlled kernel writes and page-table teardown on attacker-shaped data, i.e. a route to privilege escalation.\nA:H - Even without full exploitation the use-after-free reliably corrupts an mm_struct that the kernel then dereferences and tears down, causing oops or panic and rendering the system unavailable."}]}], "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_ctx.c"], "versions": [{"version": "aac243092b707bb3018e951d470cc1a9bcbaba6c", "lessThan": "6875ee2bef48f5d9f045d81a8a4d68893f768a8a", "status": "affected", "versionType": "git"}, {"version": "aac243092b707bb3018e951d470cc1a9bcbaba6c", "lessThan": "e8fadbffc19a233d1eedebfb8df0f522d1388280", "status": "affected", "versionType": "git"}, {"version": "aac243092b707bb3018e951d470cc1a9bcbaba6c", "lessThan": "faebb7ba1ac65fa5810b640df02ce04e509fdc11", "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_ctx.c"], "versions": [{"version": "6.14", "status": "affected"}, {"version": "0", "lessThan": "6.14", "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": "6.14", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.14", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/6875ee2bef48f5d9f045d81a8a4d68893f768a8a"}, {"url": "https://git.kernel.org/stable/c/e8fadbffc19a233d1eedebfb8df0f522d1388280"}, {"url": "https://git.kernel.org/stable/c/faebb7ba1ac65fa5810b640df02ce04e509fdc11"}], "title": "accel/amdxdna: Fix use-after-free of mm_struct in job scheduler", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/accel/amdxdna/amdxdna_ctx.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "6875ee2bef48f5d9f045d81a8a4d68893f768a8a", "status": "affected", "version": "aac243092b707bb3018e951d470cc1a9bcbaba6c", "versionType": "git"}, {"lessThan": "e8fadbffc19a233d1eedebfb8df0f522d1388280", "status": "affected", "version": "aac243092b707bb3018e951d470cc1a9bcbaba6c", "versionType": "git"}, {"lessThan": "faebb7ba1ac65fa5810b640df02ce04e509fdc11", "status": "affected", "version": "aac243092b707bb3018e951d470cc1a9bcbaba6c", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/accel/amdxdna/amdxdna_ctx.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.14"}, {"lessThan": "6.14", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.42", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.6", "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 use-after-free of mm_struct in job scheduler\n\namdxdna_cmd_submit() stores current->mm in job->mm without holding any\nreference. aie2_sched_job_run() later access job->mm from the DRM\nscheduler worker thread. With only a raw pointer and no structural\nreference, the mm_struct can be freed before the scheduler runs the job.\n\nFix this by calling mmgrab() to hold a structural mm_count reference for\nthe lifetime of the job, paired with mmdrop() in every cleanup path."}], "id": "CVE-2026-68380", "lastModified": "2026-08-17T06:17:46.457", "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": "2026-08-10T13:20:31.083", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6875ee2bef48f5d9f045d81a8a4d68893f768a8a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e8fadbffc19a233d1eedebfb8df0f522d1388280"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/faebb7ba1ac65fa5810b640df02ce04e509fdc11"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: accel/amdxdna: Fix use-after-free of mm_struct in job scheduler", "id": "2513412", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513412"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["In the Linux kernel, the following vulnerability has been resolved:\naccel/amdxdna: Fix use-after-free of mm_struct in job scheduler\namdxdna_cmd_submit() stores current->mm in job->mm without holding any\nreference. aie2_sched_job_run() later access job->mm from the DRM\nscheduler worker thread. With only a raw pointer and no structural\nreference, the mm_struct can be freed before the scheduler runs the job.\nFix this by calling mmgrab() to hold a structural mm_count reference for\nthe lifetime of the job, paired with mmdrop() in every cleanup path.", "A flaw was found in the Linux kernel's AMD XDNA accelerator driver. The `amdxdna_cmd_submit()` function improperly handles references to the `mm_struct` when scheduling jobs. This can lead to a use-after-free vulnerability, where the `mm_struct` is deallocated before the job scheduler can access it. A local attacker could potentially exploit this memory corruption to cause system instability or a denial of service."], "name": "CVE-2026-68380", "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": "2026-08-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68380\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68380\nhttps://lore.kernel.org/linux-cve-announce/2026081044-CVE-2026-68380-abce@gregkh/T"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[aac243092b707bb3018e951d470cc1a9bcbaba6c,6875ee2bef48f5d9f045d81a8a4d68893f768a8a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[aac243092b707bb3018e951d470cc1a9bcbaba6c,e8fadbffc19a233d1eedebfb8df0f522d1388280)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[aac243092b707bb3018e951d470cc1a9bcbaba6c,faebb7ba1ac65fa5810b640df02ce04e509fdc11)"}}], "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": "6.14"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.14)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.42,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc4,*]"}}], "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": "2026-08-10T16:30:05.110799+00:00", "updated": "2026-08-14T01:45:08.191359+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}