CVE-2026-43166

erofs: fix interlaced plain identification for encoded extents

HIGH
7.1
CVSS Score
Published: May 6, 2026 at 11:27 AM UTC
Updated: August 5, 2026 at 01:24 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.1
Exploit prediction
EPSS 0.1%

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().

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.15 ≤ v < 6.18.166.15 ≤ v < 6.19.66.15 ≤ v < 7.06.19 ≤ v < 6.19.61d191b4ca51d73699cb127386b95ac152af2b9306.157.0 rc1
Vendor states this is fixed in 4a2d046e4b13202a6301a993961f5b30ae4d7119 (fixed)
Vendor states this is fixed in 9d5a97bc71ed5783687705c708454c4453aa91d1 (fixed)
Vendor states this is fixed in d3790f26d38606f020212486359b84632c19d08b (fixed)
Vendor states this is fixed in 6.15 (unaffected)
Vendor states this is fixed in 6.18.16 (unaffected)
Vendor states this is fixed in 6.19.6 (unaffected)
Vendor states this is fixed in 7.0 (unaffected)

CVSS

7.1HIGHLinux
Vector?

Quick Info

StatusANALYZED
CWE
CWE-787

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