{
    "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"
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.14",
                                    "versionEndExcluding": "7.2"
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            ],
            "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",
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}