CVE-2026-64157
In the Linux kernel, the following vulnerability has been resolved: netfs: Fix partial invalidation of streaming-write folio In netfs_invalidate_folio(), if the region of a partial invalidation overlaps the front (but not all) of a dirty write cached in a streaming write page (dirty, but not uptodate, with the dirty region tracked by a netfs_folio struct), the function modifies the dirty region - but incorrectly as it moves the region forward by setting the start to the start, not the end, of the invalidation region. Fix this by setting finfo->dirty_offset to the end of the invalidation region (iend).
Affected versions
Linux kernel versions
6.10.8,
6.11
and later are affected. Fixed in
6.12.92,
6.18.34,
7.0.11,
7.1
and their respective stable series.
References
4 totalFrequently asked questions
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What is CVE-2026-64157?
CVE-2026-64157 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.10.8 onward and has been patched in 6.12.92, 6.18.34, 7.0.11 and others. CVE-2026-64157 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-2026-64157?
Yes — CVE-2026-64157 has been patched. Fixed versions include 6.12.92, 6.18.34, 7.0.11 and others. If you are running Linux kernel 6.10.8 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-64157 actively exploited?
No — CVE-2026-64157 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.