Is CVE-2026-31766 in the CISA KEV catalog?

No. CVE-2026-31766 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-31766?

CVE-2026-31766 has a CVSS v3 base score of 7.1 (HIGH).

What is the EPSS score for CVE-2026-31766?

CVE-2026-31766 has an EPSS score of 0.12% (3th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-31766?

Upgrade linux on debian unstable to 6.19.12-1 or later.

CVE & CISA-KEV Catalog

CVE-2026-31766

HIGH

7.1

CVSS v3

NVD

Description

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)

How to fix

Remediation Available

linuxDebian

Fixed in:6.19.12-1CVE-2026-31766

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Exploit Intelligence

0.12%probability of exploitation in 30 days

3rdpercentile

Low risk: more likely to be exploited than 3% of all known CVEs.

References

Patch3

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-11.