Description
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
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
3aa8ec716e52c02360457fa018296629b4d0becf to < a8ee527807f7d97e55ce2ef2906f7f34975eb1c7affected3aa8ec716e52c02360457fa018296629b4d0becf to < aa16dca1b062355181ef215229eeac249d7c0d61affected3aa8ec716e52c02360457fa018296629b4d0becf to < 80a23c6d1aba35be8746d74ac14e6ba5ae46da21affected3aa8ec716e52c02360457fa018296629b4d0becf to < 222055e6b4063abd2d9e13c3d49bbd1724c50789affected3aa8ec716e52c02360457fa018296629b4d0becf to < 48b27a955d22391c7f30169fa7b6b2e1977f1ce4affected3aa8ec716e52c02360457fa018296629b4d0becf to < 8ebb951a284b7446e025afc7dc5e9516ef9a7214affected3aa8ec716e52c02360457fa018296629b4d0becf to < 1d55445226c75ddd4e78b09b3e7d99109b28c366affected3aa8ec716e52c02360457fa018296629b4d0becf to < d18a3b5d337fa412a38e776e6b4b857a58836575affected
Linux Linux
Default version status: affected
4.19affected0 to < 4.19unaffected5.10.259 to ≤ 5.10.*unaffected5.15.210 to ≤ 5.15.*unaffected6.1.175 to ≤ 6.1.*unaffected6.6.140 to ≤ 6.6.*unaffected6.12.86 to ≤ 6.12.*unaffected6.18.27 to ≤ 6.18.*unaffected7.0.4 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
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 ↗