CVE-2026-31514 Details
Description
In the Linux kernel, the following vulnerability has been resolved: erofs: set fileio bio failed in short read case For file-backed mount, IO requests are handled by vfs_iocb_iter_read(). However, it can be interrupted by SIGKILL, returning the number of bytes actually copied. Unused folios in bio are unexpectedly marked as uptodate. vfs_read filemap_read filemap_get_pages filemap_readahead erofs_fileio_readahead erofs_fileio_rq_submit vfs_iocb_iter_read filemap_read filemap_get_pages <= detect signal erofs_fileio_ki_complete <= set all folios uptodate This patch addresses this by setting short read bio with an error directly.
A vulnerability in the Linux kernel's EROFS (Enhanced Read-Only File System) module affects file-backed mounts. The issue arises in the I/O request handling, which can be interrupted by SIGKILL, leading to a situation where unused folios in the bio (block I/O) are incorrectly marked as up-to-date. This vulnerability has been addressed by modifying the short read bio to indicate an error instead.
Users can apply the latest patches available in the Linux kernel stable tree to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/5a5f23ef5431639db1ac3a0b274aef3a84cc413c | kernel.org | Patch |
| https://git.kernel.org/stable/c/5cf3972c8221abdb1b464a14ccf8103d840b9085 | kernel.org | Patch |
| https://git.kernel.org/stable/c/d1ba7d6b3cd1757b108d7b6856c92ae661d6c323 | kernel.org | Patch |
| https://git.kernel.org/stable/c/eade54040384f54b7fb330e4b0975c5734850b3c | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.12.75, < 6.12.80 >= 6.18.14, < 6.18.21 >= 6.19.4, < 6.19.11 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Apr 28, 2026 | Initial Analysis | [email protected] |
| Apr 22, 2026 | New CVE Received | kernel.org |