{"id":"CVE-2026-80539","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-80539","generatedAt":"2026-10-28T07:24:49.655Z","title":"In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: disallow multiple FENCE chunks in one submit amdgpu_cs_pass1() dispatches on chunk_id once per chunk without rejecting repeated ids. p->uf_bo is a single-slot field, so a…","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: disallow multiple FENCE chunks in one submit\n\namdgpu_cs_pass1() dispatches on chunk_id once per chunk without\nrejecting repeated ids. p->uf_bo is a single-slot field, so a\nsubmission carrying two AMDGPU_CHUNK_ID_FENCE chunks runs\namdgpu_cs_p1_user_fence() twice, and the second run overwrites\np->uf_bo with a freshly referenced BO without dropping the reference\ntaken by the first.\n\namdgpu_cs_parser_fini() only unrefs the final p->uf_bo, so every FENCE\nchunk but the last leaks a BO reference. The leaked BO outlives handle\nclose and process exit.\n\nReject duplicate FENCE chunks the same way commit fec5f8e8c6bc\n(\"drm/amdgpu: disallow multiple BO_HANDLES chunks in one submit\") did\nfor p->bo_list.\n\n(cherry picked from commit 665b1fc2a1845206408f9a2c6da67101789edb82)","published":"2026-08-26T15:17:08.000Z","lastModified":"2026-08-27T13:18:39.000Z","status":"Received","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":null,"cwe":[],"affected":[],"epss":{"score":0.00173,"percentile":0.06714,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"unknown","text":"Not yet scored. NVD analysis is pending; check back once CVSS and EPSS values are published."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/070229262ede37d17c4ea596650deb6e5eb5d106","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5f46322e0b84af29e10eb951ff45bd6ea40640de","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/71aa45f7bfe46fbc6f51e7832573ff49b6005fea","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7e9954e7212042ec808b06181b365b14f00c6f0a","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/931cd1d1baeae68e8eb2c23bc1f3d8934dca6241","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e3ee74d6dbbe409eb99546a7b0a02b2782f9021d","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80539","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}