In the Linux kernel, the following vulnerability has been resolved: netfs: Fix potential for tearing in ->remote_i_size and ->zero_point Fix… (CVE-2026-64160)
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.
AI Analysis
Technical Summary
CVE-2026-64160 addresses a synchronization vulnerability in the Linux kernel's netfs component. The vulnerability arises from potential tearing when accessing or updating the ->remote_i_size and ->zero_point fields, which are related to file size metadata. This tearing could lead to corruption of the i_size_seqcount, a sequence counter used to ensure consistent reads of file size information. The fix implemented involves using the same sequence count for i_size operations and enforcing that netfslib and associated filesystems hold the i_lock mutex while updating size fields, preventing concurrent modifications that could corrupt the sequence count.
Potential Impact
The vulnerability could cause corruption of file size metadata within the netfs subsystem of the Linux kernel. While no direct exploit or attack vector is documented, corrupted file size information could potentially lead to inconsistent filesystem behavior or data integrity issues. There are no known exploits in the wild, and the impact is limited to internal kernel data consistency.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to address this vulnerability by improving synchronization around file size updates in netfs. Users should apply the official kernel updates that include this fix once available. Since this is a kernel-level issue, upgrading to a patched kernel version is the recommended remediation. Patch status is not explicitly confirmed in the provided data; therefore, check the vendor or Linux kernel advisory for the latest remediation guidance.
In the Linux kernel, the following vulnerability has been resolved: netfs: Fix potential for tearing in ->remote_i_size and ->zero_point Fix… (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.
CVSS v3.1
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-64160 addresses a synchronization vulnerability in the Linux kernel's netfs component. The vulnerability arises from potential tearing when accessing or updating the ->remote_i_size and ->zero_point fields, which are related to file size metadata. This tearing could lead to corruption of the i_size_seqcount, a sequence counter used to ensure consistent reads of file size information. The fix implemented involves using the same sequence count for i_size operations and enforcing that netfslib and associated filesystems hold the i_lock mutex while updating size fields, preventing concurrent modifications that could corrupt the sequence count.
Potential Impact
The vulnerability could cause corruption of file size metadata within the netfs subsystem of the Linux kernel. While no direct exploit or attack vector is documented, corrupted file size information could potentially lead to inconsistent filesystem behavior or data integrity issues. There are no known exploits in the wild, and the impact is limited to internal kernel data consistency.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to address this vulnerability by improving synchronization around file size updates in netfs. Users should apply the official kernel updates that include this fix once available. Since this is a kernel-level issue, upgrading to a patched kernel version is the recommended remediation. Patch status is not explicitly confirmed in the provided data; therefore, check the vendor or Linux kernel advisory for the latest remediation guidance.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-83gv-5w7g-5pv2
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-64160"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a5d27a82a4a8d598912a56e
Added to database: 07/19/2026, 19:38:16 UTC
Last enriched: 07/19/2026, 19:41:47 UTC
Last updated: 07/20/2026, 19:41:21 UTC
Views: 11
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