CVE-2026-98057
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 versions
Linux kernel versions
6.12.16,
6.13.4,
6.14
and later are affected. Fixed in
6.12.111,
7.2.7,
7.3-rc2
and their respective stable series.
References
3 totalFrequently asked questions
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What is CVE-2026-98057?
CVE-2026-98057 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.12.16 onward and has been patched in 6.12.111, 7.2.7 and 7.3-rc2. CVE-2026-98057 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-98057?
Yes. CVE-2026-98057 has been patched. Fixed versions include 6.12.111, 7.2.7 and 7.3-rc2. If you are running Linux kernel 6.12.16 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-98057 actively exploited?
No. CVE-2026-98057 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.