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 hav…
Impact
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 products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 4.19 before 5.10.259 from 5.11 before 5.15.210 from 5.16 before 6.1.175 from 6.2 before 6.6.140 from 6.7 before 6.12.86 from 6.13 before 6.18.27 |
Weakness classification
References
- NVD record
- CVE.org record
- 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
- https://git.kernel.org/stable/c/a8ee527807f7d97e55ce2ef2906f7f34975eb1c7
- https://git.kernel.org/stable/c/aa16dca1b062355181ef215229eeac249d7c0d61
- https://git.kernel.org/stable/c/d18a3b5d337fa412a38e776e6b4b857a58836575