Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 3aa8ec716e52c02360457fa018296629b4d0becf before a8ee527807f7d97e55ce2ef2906f7f34975eb1c7; affected 3aa8ec716e52c02360457fa018296629b4d0becf before aa16dca1b062355181ef215229eeac249d7c0d61; affected 3aa8ec716e52c02360457fa018296629b4d0becf before 80a23c6d1aba35be8746d74ac14e6ba5ae46da21; affected 3aa8ec716e52c02360457fa018296629b4d0becf before 222055e6b4063abd2d9e13c3d49bbd1724c50789; affected 3aa8ec716e52c02360457fa018296629b4d0becf before 48b27a955d22391c7f30169fa7b6b2e1977f1ce4; affected 3aa8ec716e52c02360457fa018296629b4d0becf before 8ebb951a284b7446e025afc7dc5e9516ef9a7214; affected 3aa8ec716e52c02360457fa018296629b4d0becf before 1d55445226c75ddd4e78b09b3e7d99109b28c366; affected 3aa8ec716e52c02360457fa018296629b4d0becf before d18a3b5d337fa412a38e776e6b4b857a58836575 |
| Linux / Linux | affected 4.19; unaffected 0 before 4.19; unaffected 5.10.259 through 5.10.*; unaffected 5.15.210 through 5.15.*; unaffected 6.1.175 through 6.1.*; unaffected 6.6.140 through 6.6.*; unaffected 6.12.86 through 6.12.*; unaffected 6.18.27 through 6.18.*; unaffected 7.0.4 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/a8ee527807f7d97e55ce2ef2906f7f34975eb1c7
- https://git.kernel.org/stable/c/aa16dca1b062355181ef215229eeac249d7c0d61
- https://git.kernel.org/stable/c/80a23c6d1aba35be8746d74ac14e6ba5ae46da21
- https://git.kernel.org/stable/c/222055e6b4063abd2d9e13c3d49bbd1724c50789
- https://git.kernel.org/stable/c/48b27a955d22391c7f30169fa7b6b2e1977f1ce4
- https://git.kernel.org/stable/c/8ebb951a284b7446e025afc7dc5e9516ef9a7214
- https://git.kernel.org/stable/c/1d55445226c75ddd4e78b09b3e7d99109b28c366
- https://git.kernel.org/stable/c/d18a3b5d337fa412a38e776e6b4b857a58836575
ADP enrichment
No English description supplied.
No references supplied.