{"apiVersion":"1.0","identifier":"CVE-2026-80539","description":"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 submission carrying two AMDGPU_CHUNK_ID_FENCE chunks runs amdgpu_cs_p1_user_fence() twice, and the second run overwrites p->uf_bo with a freshly referenced BO without dropping the reference taken by the first. amdgpu_cs_parser_fini() only unrefs the final p->uf_bo, so every FENCE chunk but the last leaks a BO reference. The leaked BO outlives handle close and process exit. Reject duplicate FENCE chunks the same way commit fec5f8e8c6bc (-drm/amdgpu: disallow multiple BO_HANDLES chunks in one submit-) did for p->bo_list. (cherry picked from commit 665b1fc2a1845206408f9a2c6da67101789edb82)","publishedAt":"2026-08-26T15:17:08","lastModifiedAt":"2026-08-27T13:18:39","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-80539","cvssScore":null,"cvssVector":"Pending","epssProbability":0.00172,"riskScore":0,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-80539","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-80539","en":"https://www.redsauce.net/en/cves/CVE-2026-80539","fr":"https://www.redsauce.net/fr/cves/CVE-2026-80539","pt":"https://www.redsauce.net/pt/cves/CVE-2026-80539","de":"https://www.redsauce.net/de/cves/CVE-2026-80539","sk":"https://www.redsauce.net/sk/cves/CVE-2026-80539","el":"https://www.redsauce.net/el/cves/CVE-2026-80539"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-80539"}}