Riskcovery

CVE-2026-64160

netfs: Fix potential for tearing in ->remote_i_size and ->zero_point

State
Published
Severity
9.8 Critical
Published
Jul 19, 2026
Updated
Oct 19, 2026
Reserved
Jul 19, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

netfs: Fix potential for tearing in ->remote_i_size and ->zero_point

Fix potential tearing in using ->remote_i_size and ->zero_point by copying i_size_read() and i_size_write() and using the same seqcount as for i_size.

We need to make sure that netfslib and the filesystems that use it always hold i_lock whilst updating any of the sizes to prevent i_size_seqcount from getting corrupted.

Scores

CVSSScoreVectorSource
3.19.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLinux

Weaknesses

  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Affected Products

ProductVersions
LinuxLinux
  • 4058f742105ecfcbdf99e1139e6c1f74fb8e6db9 to before 55970f238d495517edc961d55c44c772594d0969Affected
  • 4058f742105ecfcbdf99e1139e6c1f74fb8e6db9 to before 2c8f4742bb76117d735f92a3932d85239b16c494Affected
LinuxLinux
  • 5.18Affected
  • before 5.18Not affected
  • 7.0.11 through 7.0.*Not affected
  • 7.1 and laterNot affected

References

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