CVE-2026-64157

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinuxcce6bfa6ca0e30af9927b0074c97fe6a92f28092 < f6b2569ae29b666fd15ff2848684c445ba442a39affected
LinuxLinuxcce6bfa6ca0e30af9927b0074c97fe6a92f28092 < 3d9601c029b934b5b6a10f99791467b10eb6b211affected
LinuxLinuxcce6bfa6ca0e30af9927b0074c97fe6a92f28092 < 6a3d27116be2c5fb9a03d5cf37c486ac517f3689affected
LinuxLinuxcce6bfa6ca0e30af9927b0074c97fe6a92f28092 < 6d91acc7fb85d33ea58fca9b964a32a453937f4baffected
LinuxLinuxe2814004138a541110d4b2dc254a8f619c2c4ce0affected
LinuxLinux6.10.8 < 6.11affected
LinuxLinux6.11affected
LinuxLinux0 < 6.11unaffected
LinuxLinux6.12.92 <= 6.12.*unaffected
LinuxLinux6.18.34 <= 6.18.*unaffected
LinuxLinux7.0.11 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References