CVE-2026-80576High· 8.8▾ TwilightIn 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, wh…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 16.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.1%
Last analysed / modified upstream
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)
Linux >= d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 67a5d905c17a5066b0f6f950da11da93d56d122bLinux >= d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 6e164ba1057175fb8a370d8e05cbff5c57eac0c8Linux >= d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 1474f3970d1afd303e12ff14d06808eabb371576Linux >= d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < 07fe270ec07c138a70afe7a81e115a85c35c545cLinux >= d38ceaf99ed015f2a0b9af3499791bd3a3daae21 < fd37f9dd5b5ab70a46fa7bc76623c0528d602b27Linux 4.2Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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