{"api_version":"1","generated_at":"2026-10-29T10:41:18+00:00","cve":"CVE-2025-68748","urls":{"html":"https://cve.report/CVE-2025-68748","api":"https://cve.report/api/cve/CVE-2025-68748.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2025-68748","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-68748"},"summary":{"title":"drm/panthor: Fix UAF race between device unplug and FW event processing","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/panthor: Fix UAF race between device unplug and FW event processing\n\nThe function panthor_fw_unplug() will free the FW memory sections.\nThe problem is that there could still be pending FW events which are yet\nnot handled at this point. process_fw_events_work() can in this case try\nto access said freed memory.\n\nSimply call disable_work_sync() to both drain and prevent future\ninvocation of process_fw_events_work().","state":"PUBLISHED","assigner":"Linux","published_at":"2025-12-24 13:16:29","updated_at":"2026-10-13 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Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-68748","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected de85488138247d034eb3241840424a54d660926b 31db188355a49337e3e8ec98b99377e482eab22c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected de85488138247d034eb3241840424a54d660926b 5e3ff56d4cb591daea70786d07dc21d06dc34108 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected de85488138247d034eb3241840424a54d660926b 6c1da9ae2c123a9ffda5375e64cc81f9ed3cc04a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected de85488138247d034eb3241840424a54d660926b 7051f6ba968fa69918d72cc26de4d6cf7ea05b90 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.10","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.10 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.63 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.17.13 6.17.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.2 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2025","cve_id":"68748","cve":"CVE-2025-68748","epss":"0.001240000","percentile":"0.025710000","score_date":"2026-08-01","updated_at":"2026-08-02 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the Linux kernel, the following vulnerability has been resolved:\n\ndrm/panthor: Fix UAF race between device unplug and FW event processing\n\nThe function panthor_fw_unplug() will free the FW memory sections.\nThe problem is that there could still be pending FW events which are yet\nnot handled at this point. process_fw_events_work() can in this case try\nto access said freed memory.\n\nSimply call disable_work_sync() to both drain and prevent future\ninvocation of process_fw_events_work()."}],"metrics":[{"cvssV3_1":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"scenarios":[{"lang":"en","value":"AV:L - Exploitation requires local access to the Panthor DRM render device and cannot be initiated through a network protocol or adjacent interface.\nAC:L - A render-node client can use concurrent submissions to keep firmware events pending while driving fault, hang, reset, and eventual unplug processing. The attacker can repeatedly generate events and influence both sides of the workqueue race.\nPR:L - Panthor exposes GROUP_CREATE and GROUP_SUBMIT through DRM_RENDER_ALLOW without capability checks for ordinary priorities, so an unprivileged user granted normal render-node access can reach the relevant paths.\nUI:N - Concurrent GPU submissions and reset-triggering workloads require no action by another user.\nS:U - The UAF corrupts host-kernel memory but does not inherently cross a separate virtualization, IOMMU, or other security authority.\nC:H - The worker reads through stale firmware-interface pointers after their shared BO and kernel mapping are freed; reclaim exploitation can enable disclosure of arbitrary kernel memory.\nI:H - The stale worker writes request, acknowledgement, and doorbell fields into freed or reallocated memory, permitting kernel-memory corruption and potential control-flow hijacking.\nA:H - Accessing the destroyed firmware mapping can cause a kernel page fault, oops, or panic, and successful corruption can render the entire system unavailable."}]}],"providerMetadata":{"dateUpdated":"2026-08-05T12:11:17.874Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/31db188355a49337e3e8ec98b99377e482eab22c"},{"url":"https://git.kernel.org/stable/c/5e3ff56d4cb591daea70786d07dc21d06dc34108"},{"url":"https://git.kernel.org/stable/c/6c1da9ae2c123a9ffda5375e64cc81f9ed3cc04a"},{"url":"https://git.kernel.org/stable/c/7051f6ba968fa69918d72cc26de4d6cf7ea05b90"}],"title":"drm/panthor: Fix UAF race between device unplug and FW event processing","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2025-68748","datePublished":"2025-12-24T12:09:43.620Z","dateReserved":"2025-12-24T10:30:51.032Z","dateUpdated":"2026-08-05T12:11:17.874Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2025-12-24 13:16:29","lastModifiedDate":"2026-10-13 10:10:00","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"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","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2025","CveId":"68748","Ordinal":"1","Title":"drm/panthor: Fix UAF race between device unplug and FW event pro","CVE":"CVE-2025-68748","Year":"2025"},"notes":[{"CveYear":"2025","CveId":"68748","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/panthor: Fix UAF race between device unplug and FW event processing\n\nThe function panthor_fw_unplug() will free the FW memory sections.\nThe problem is that there could still be pending FW events which are yet\nnot handled at this point. process_fw_events_work() can in this case try\nto access said freed memory.\n\nSimply call disable_work_sync() to both drain and prevent future\ninvocation of process_fw_events_work().","Type":"Description","Title":"drm/panthor: Fix UAF race between device unplug and FW event pro"}]}}}