CVE-2026-46078

In the Linux kernel, the following vulnerability has been resolved: erofs: fix the out-of-bounds nameoff handling for trailing dirents Currently we already have boundary-checks for nameoffs, but the trailing dirents are special since the namelens are calculated with strnlen() with unchecked nameoffs. If a crafted EROFS has a trailing dirent with nameoff >= maxsize, maxsize - nameoff can underflow, causing strnlen() to read past the directory block. nameoff0 should also be verified to be a multiple of `sizeof(struct erofs_dirent)` as well [1]. [1] https://sashiko.dev/#/patchset/20260416063511.3173774-1-hsiangkao%40linux.alibaba.com

CVSS 3.1

7.1CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

EPSS

0.1% chance of exploitation in the next 30 days; higher than 2% of CVEs (scores of 2026-10-25)

CWE

CWE-125

Published

2026-05-27

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/1d55445226c75ddd4e78b09b3e7d99109b28c366
• https://git.kernel.org/stable/c/222055e6b4063abd2d9e13c3d49bbd1724c50789
• https://git.kernel.org/stable/c/48b27a955d22391c7f30169fa7b6b2e1977f1ce4
• https://git.kernel.org/stable/c/80a23c6d1aba35be8746d74ac14e6ba5ae46da21
• https://git.kernel.org/stable/c/8ebb951a284b7446e025afc7dc5e9516ef9a7214

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