CVE-2026-98176: drm/amdkfd: Avoid integer underflow with ffs in EOP ring size calc
Published Oct 6, 2026
·Updated
drm/amdkfd: Avoid integer underflow with ffs in EOP ring size calc
Affected Software
1 affected component
Linux Linux kernel
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Linux kernel drm/amdkfdto a version that resolves this vulnerability.Patch 4f18c56630383c14bfc6b2d65f88f2f895d2121a
Event History
Oct 6, 2026
CVE Published
via MITRE·08:44 AM
Data Sourced
via MITRE·08:44 AM
Description
Data Sourced
via NVD·09:17 AM
Description
Oct 7, 2026
Data Sourced
via Microsoft·08:44 AM
DescriptionSeverityWeakness
Frequently Asked Questions
1
Is the integer underflow practically reachable with valid EOP ring buffer sizes?
The issue is described as theoretically possible because ffs can return 1 or 0. In practice, the EOP ring buffer size cannot be less than 4096, so the affected calculation should not receive the small values that would cause the underflow.