{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2024-50149", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-10-21T19:36:19.959Z", "datePublished": "2024-11-07T09:31:25.885Z", "dateUpdated": "2026-08-05T11:42:02.810Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:42:02.810Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: Don't free job in TDR\n\nFreeing job in TDR is not safe as TDR can pass the run_job thread\nresulting in UAF. It is only safe for free job to naturally be called by\nthe scheduler. Rather free job in TDR, add to pending list.\n\n(cherry picked from commit ea2f6a77d0c40d97f4a4dc93fee4afe15d94926d)" } ], "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 reached only through DRM ioctls (`XE_EXEC_QUEUE_CREATE`, `XE_EXEC`, `XE_EXEC_QUEUE_DESTROY`) on a local `/dev/dri/renderD*` node of an Intel Xe GPU. No network or adjacent-network exposure exists.\nAC:L - The attacker controls both sides of the race — GPU batch duration determines when the fence signals, GuC CT saturation stalls `run_job()` past the TDR deadline, and the triggering \"exec queue closed immediately after last fence signaled\" pattern is described by the fix author as *common* — and it can be retried in a tight loop across many exec queues until won.\nPR:L - All required ioctls are marked `DRM_RENDER_ALLOW` with no `DRM_AUTH` or capability check, so any unprivileged local user (or sandboxed/containerized process such as a browser GPU process) holding an fd on the render node can trigger it.\nUI:N - The attacking process performs every step itself — create exec queue, submit a job with attacker-chosen execution time, close the queue — with no victim action required.\nS:U - The freed `xe_sched_job` and all subsequent accesses are kernel objects within the same security authority; no VM, IOMMU, or sandbox boundary is crossed by the corruption itself.\nC:H - The job is freed into a mergeable slab with no RCU delay, and the run_job worker then reads `sched_job->s_fence`, `job->fence`, and `job->q` from the reallocated memory, allowing an attacker who sprays the freed slot to steer dereferences and leak arbitrary kernel memory.\nI:H - After the free, `dma_fence_add_callback(fence, &sched_job->cb, ...)` writes list pointers into the freed object and `drm_sched_job_done()`/`dma_fence_signal()` traverse callback lists and invoke `dma_fence_ops`/`dma_fence_cb->func` pointers, giving a heap-spray-driven write and control-flow hijack primitive.\nA:H - The use-after-free corrupts the DRM scheduler's pending list and fence callback chains, reliably producing KASAN splats, oopses, and kernel panics; the buggy path additionally loses the job free, leaking memory and disturbing GPU submission state." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/xe/xe_guc_submit.c" ], "versions": [ { "version": "e275d61c5f3ffc250b2a9601d36fbd11b4db774b", "lessThan": "be8fe75e57f8fa3f87e3b1c283cc7cd9f9b80867", "status": "affected", "versionType": "git" }, { "version": "e275d61c5f3ffc250b2a9601d36fbd11b4db774b", "lessThan": "82926f52d7a09c65d916c0ef8d4305fc95d68c0c", "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/gpu/drm/xe/xe_guc_submit.c" ], "versions": [ { "version": "6.10", "status": "affected" }, { "version": "0", "lessThan": "6.10", "status": "unaffected", "versionType": "semver" }, { "version": "6.11.6", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12", "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": "6.10", "versionEndExcluding": "6.11.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.10", "versionEndExcluding": "6.12" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/be8fe75e57f8fa3f87e3b1c283cc7cd9f9b80867" }, { "url": "https://git.kernel.org/stable/c/82926f52d7a09c65d916c0ef8d4305fc95d68c0c" } ], "title": "drm/xe: Don't free job in TDR", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2024-50149", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2024-12-11T14:25:51.665392Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-12-11T14:58:33.233Z" } } ] } }