CVE-2026-46329
Received Received - Intake

EROFS Filesystem Boundary Handling Vulnerability

Publication date: 2026-06-09

Last updated on: 2026-06-09

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: erofs: handle end of filesystem properly for file-backed mounts I/O requests beyond the end of the filesystem should be zeroed out, similar to loopback devices and that is what we expect.

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Meta Information

Published
2026-06-09
Last Modified
2026-06-09
Generated
2026-06-30
AI Q&A
2026-06-09
EPSS Evaluated
2026-06-28
NVD
CVE-2026-46329
EUVD
EUVD-2026-35430

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

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Exploitability

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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability in the Linux kernel relates to the erofs filesystem. It involves improper handling of I/O requests that go beyond the end of the filesystem in file-backed mounts. The expected behavior is that such requests should be zeroed out, similar to how loopback devices handle them. The vulnerability was resolved by ensuring that the end of the filesystem is handled properly.

Impact Analysis

If I/O requests beyond the end of the filesystem are not properly zeroed out, it could lead to unexpected behavior or data leakage from uninitialized memory areas. This might affect system stability or security when using the erofs filesystem with file-backed mounts.

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