CVE-2026-80576
Last modified
CVE-2026-80576 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: reject oversized IBs with per-ring packet limits On GFX rings, amdgpu_cs_p2_ib() passed user-supplied ib_bytes through to ib->length_dw without a limit, while ring_emit_ib() encodes length into packet fields. Oversized values can corrupt adjacent control bits and destabilize command submission. Add a per-ring IB packet size limit helper and reject command submissions exceeding the corresponding dword limit before IB allocation.
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: reject oversized IBs with per-ring packet limits On GFX rings, amdgpu_cs_p2_ib() passed user-supplied ib_bytes through to ib->length_dw without a limit, while ring_emit_ib() encodes length into packet fields. Oversized values can corrupt adjacent control bits and destabilize command submission. Add a per-ring IB packet size limit helper and reject command submissions exceeding the corresponding dword limit before IB allocation. Use the documented 20-bit limit for GFX/compute/SDMA/VPE, and apply the MM fallback limit for other ring types. (cherry picked from commit 7f48fa2cf62e3fa6c9c3870aa74988f773247e52)
Metrics
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= d38ceaf99ed015f2a0b9af3499791bd3a3daae21, < 6e164ba1057175fb8a370d8e05cbff5c57eac0c8; >= d38ceaf99ed015f2a0b9af3499791bd3a3daae21, < 1474f3970d1afd303e12ff14d06808eabb371576; >= d38ceaf99ed015f2a0b9af3499791bd3a3daae21, < 07fe270ec07c138a70afe7a81e115a85c35c545c; >= d38ceaf99ed015f2a0b9af3499791bd3a3daae21, < fd37f9dd5b5ab70a46fa7bc76623c0528d602b27 |
| Linux | Linux | 4.2 |
References
Timeline
- Published
- Last Modified
- Status
- Received
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