CVE-2026-80539

CVE CVE-2026-80539EUVD EUVD-2026-66454Published 2026-08-26T14:37:13.000ZLast changed 2026-08-27T12:40:05.000Z

What the advisory describes

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)

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <71aa45f7bfe46fbc6f51e7832573ff49b6005fea; patch: 6.18.46; d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <7e9954e7212042ec808b06181b365b14f00c6f0a; d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <5f46322e0b84af29e10eb951ff45bd6ea40640de; d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <e3ee74d6dbbe409eb99546a7b0a02b2782f9021d; patch: 6.6.153; d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <931cd1d1baeae68e8eb2c23bc1f3d8934dca6241; d38ceaf99ed015f2a0b9af3499791bd3a3daae21 <070229262ede37d17c4ea596650deb6e5eb5d106; 4.2; patch: 6.12.105; patch: 0; patch: 6.1.185; patch: 7.1.10; patch: 7.2

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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