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

What is CVE-2026-64160?

CVE-2026-64160 is a critical vulnerability in Linux kernel, published on 19 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-362

Which versions are affected by CVE-2026-64160?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-64160?

Apply the vendor's patch.

Is CVE-2026-64160 being exploited?

There is no known exploitation of CVE-2026-64160 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-92733, BELL-CVE-2026-64160, DEBIAN-CVE-2026-64160, GHSA-83gv-5w7g-5pv2, ROOT-OS-DEBIAN-12-CVE-2026-64160, ROOT-OS-DEBIAN-13-CVE-2026-64160 and 1 more.