CVE-2026-43166 Details
Description
In the Linux kernel, the following vulnerability has been resolved: erofs: fix interlaced plain identification for encoded extents Only plain data whose start position and on-disk physical length are both aligned to the block size should be classified as interlaced plain extents. Otherwise, it must be treated as shifted plain extents. This issue was found by syzbot using a crafted compressed image containing plain extents with unaligned physical lengths, which can cause OOB read in z_erofs_transform_plain().
A vulnerability in the Linux kernel's EROFS file system has been addressed, concerning the identification of interlaced plain extents. Only plain data with start positions and on-disk physical lengths aligned to the block size should be classified as interlaced. Extents that are not aligned must be treated as shifted. This issue, discovered by syzbot, involved a crafted compressed image with plain extents of unaligned lengths, leading to an out-of-bounds read in the 'z_erofs_transform_plain()' function.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been fixed. Instructions for downloading the patched version are available on the official Linux kernel website.
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/4a2d046e4b13202a6301a993961f5b30ae4d7119 | kernel.org | Patch |
| https://git.kernel.org/stable/c/9d5a97bc71ed5783687705c708454c4453aa91d1 | kernel.org | Patch |
| https://git.kernel.org/stable/c/d3790f26d38606f020212486359b84632c19d08b | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.15, < 6.18.16 >= 6.19, < 6.19.6 7.0 rc1 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 13, 2026 | Initial Analysis | [email protected] |
| May 8, 2026 | CVE Modified | kernel.org |
| May 6, 2026 | New CVE Received | kernel.org |