CVE-2026-98057: Linux

EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Add checking nr_subbufs to persistent ring buffer validation Sashiko reported that the code was using meta->nr_subbufs without making sure that it matched the nr_pages + 1 on data that was assuming the two were the same. Add a check to the persistent ring buffer validation code to make sure that the saved nr_subbufs matches what we expect.

Affected products

• Linux Linux: from 6.12.16, before 6.12.111 (fixed in 6.12.111); from 6.13.4, before 6.14 (fixed in 6.14); from 6.14, before 7.2.7 (fixed in 7.2.7)

Published 2026-09-25. Last modified 2026-09-30.