CVE-2026-46078
published 2026-05-27CVE-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…
high7.1CVSS 3.1
AVLACLPRNUIRSUCHINAH
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
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= 3aa8ec716e52c02360457fa018296629b4d0becf < 80a23c6d1aba35be8746d74ac14e6ba5ae46da21 | 80a23c6d1aba35be8746d74ac14e6ba5ae46da21 |
| linux | linux | >= 3aa8ec716e52c02360457fa018296629b4d0becf < 222055e6b4063abd2d9e13c3d49bbd1724c50789 | 222055e6b4063abd2d9e13c3d49bbd1724c50789 |
| linux | linux | >= 3aa8ec716e52c02360457fa018296629b4d0becf < 48b27a955d22391c7f30169fa7b6b2e1977f1ce4 | 48b27a955d22391c7f30169fa7b6b2e1977f1ce4 |
| linux | linux | >= 3aa8ec716e52c02360457fa018296629b4d0becf < 8ebb951a284b7446e025afc7dc5e9516ef9a7214 | 8ebb951a284b7446e025afc7dc5e9516ef9a7214 |
| linux | linux | >= 3aa8ec716e52c02360457fa018296629b4d0becf < 1d55445226c75ddd4e78b09b3e7d99109b28c366 | 1d55445226c75ddd4e78b09b3e7d99109b28c366 |
| linux | linux | >= 3aa8ec716e52c02360457fa018296629b4d0becf < d18a3b5d337fa412a38e776e6b4b857a58836575 | d18a3b5d337fa412a38e776e6b4b857a58836575 |
| linux | linux_kernel | — | — |