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CVE-2026-98894

UnknownEPSS 0.16%

Last modified

CVE-2026-98894 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: drm/amd/ras: reset CPER ring on corrupt entry size When CPER ring overflow handling advances the read pointer, it trusts the parsed entry size from the current ring contents. Corrupt CPER data can produce an entry size that does not advance rptr after dword conversion and pointer masking. In that case the recovery loop keeps testing the same location while holding the CPER ring mutex. EPSS estimates a 0.16% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/ras: reset CPER ring on corrupt entry size When CPER ring overflow handling advances the read pointer, it trusts the parsed entry size from the current ring contents. Corrupt CPER data can produce an entry size that does not advance rptr after dword conversion and pointer masking. In that case the recovery loop keeps testing the same location while holding the CPER ring mutex. This can hang the worker that is writing the next CPER record. Detect a no-progress rptr update and reset the CPER ring to an empty state instead. This drops the corrupt contents and lets the writer leave the recovery path without spinning.

Metrics

EPSS Probability
0.16%

5.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 4058e7cbfd0fb0cae7cbb8035bb43c593cc7c964, < a98d0d49757a113ce17960262b9cd4ccc1420108; >= 4058e7cbfd0fb0cae7cbb8035bb43c593cc7c964, < 4d695e66d7027a0c78302e47ac76293675fbbb4d
LinuxLinux6.15

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98894?
In the Linux kernel, the following vulnerability has been resolved: drm/amd/ras: reset CPER ring on corrupt entry size When CPER ring overflow handling advances the read pointer, it trusts the parsed entry size from the current ring contents. Corrupt CPER data can produce an entry size that does not advance rptr after dword conversion and pointer masking. In that case the recovery loop keeps testing the same location while holding the CPER ring mutex. This can hang the worker that is writing the next CPER record. Detect a no-progress rptr update and reset the CPER ring to an empty state instead. This drops the corrupt contents and lets the writer leave the recovery path without spinning.
How severe is CVE-2026-98894?
Severity scoring for CVE-2026-98894 is pending analysis. The EPSS model estimates a 0.16% probability of exploitation in the next 30 days.
How do I fix CVE-2026-98894?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST