CVE-2026-31766
- Source
- https://cve.org/CVERecord?id=CVE-2026-31766
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31766.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-31766
- Downstream
- Published
- 2026-05-01T14:14:56Z
- Modified
- 2026-08-12T03:51:38Z
- Severity
-
- 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H CVSS Calculator
- Summary
- drm/amdgpu: validate doorbell_offset in user queue creation
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: validate doorbell_offset in user queue creation
amdgpu_userq_get_doorbell_index() passes the user-provided doorbell_offset to amdgpu_doorbell_index_on_bar() without bounds checking. An arbitrarily large doorbell_offset can cause the calculated doorbell index to fall outside the allocated doorbell BO, potentially corrupting kernel doorbell space.
Validate that doorbell_offset falls within the doorbell BO before computing the BAR index, using u64 arithmetic to prevent overflow.
(cherry picked from commit de1ef4ffd70e1d15f0bf584fd22b1f28cbd5e2ec)
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31766.json" }- References
-
- https://git.kernel.org/stable/c/3543005a42d7e8e12b21897ef6798541bf7cbcd3
- https://git.kernel.org/stable/c/86b732fbc37ce4fb76cdd4af0fb7e30a6acdbce6
- https://git.kernel.org/stable/c/a018d1819f158991b7308e4f74609c6c029b670c
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31766.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-31766
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git