CVE-2026-80576
- Source
- https://cve.org/CVERecord?id=CVE-2026-80576
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80576.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-80576
- Downstream
- Published
- 2026-08-26T14:37:35.538Z
- Modified
- 2026-08-28T03:47:29.321128694Z
- Severity
-
- 8.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
- Summary
- drm/amdgpu: reject oversized IBs with per-ring packet limits
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: reject oversized IBs with per-ring packet limits
On GFX rings, amdgpucsp2ib() passed user-supplied ibbytes through to ib->lengthdw without a limit, while ringemit_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)
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80576.json" }- References
-
- https://git.kernel.org/stable/c/07fe270ec07c138a70afe7a81e115a85c35c545c
- https://git.kernel.org/stable/c/1474f3970d1afd303e12ff14d06808eabb371576
- https://git.kernel.org/stable/c/6e164ba1057175fb8a370d8e05cbff5c57eac0c8
- https://git.kernel.org/stable/c/fd37f9dd5b5ab70a46fa7bc76623c0528d602b27
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80576.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-80576
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedd38ceaf99ed015f2a0b9af3499791bd3a3daae21Fixed6e164ba1057175fb8a370d8e05cbff5c57eac0c8Fixed1474f3970d1afd303e12ff14d06808eabb371576Fixed07fe270ec07c138a70afe7a81e115a85c35c545cFixedfd37f9dd5b5ab70a46fa7bc76623c0528d602b27