# CVE-2026-64160: netfs: Fix potential for tearing in ->remote_i_size and ->zero_point

CVE-2026-64160 is fixed in linux on 1 platform by DEBIAN-CVE-2026-64160 (version 7.0.12-1), released July 20, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-64160
- Priority: High
- CVSS: 9.8 (Moderate)
- EPSS: 0.0043
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 19, 2026
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64160

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 7.0.12-1 | [DEBIAN-CVE-2026-64160](https://patchblox.com/security/data/fix/linux/debian-cve-2026-64160.md) | Jul 20, 2026 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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