High severity7.1NVD Advisory· Published May 27, 2026· Updated Jun 24, 2026
CVE-2026-46078
CVE-2026-46078
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
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Affected products
17- osv-coords15 versionspkg:linux/kernelpkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2016.0
>= 4.19.0, < 5.10.259+ 14 more
- (no CPE)range: >= 4.19.0, < 5.10.259
- (no CPE)range: < 6.12.0-160000.36.1
- (no CPE)range: < 6.12.0-160000.36.1
- (no CPE)range: < 6.12.0-160000.36.1
- (no CPE)range: < 6.12.0-160000.36.1
- (no CPE)range: < 6.12.0-160000.36.1.160000.2.17
- (no CPE)range: < 6.12.0-160000.36.1
- (no CPE)range: < 6.12.0-160000.36.1
- (no CPE)range: < 6.12.0-160000.36.1
- (no CPE)range: < 6.12.0-160000.36.1
- (no CPE)range: < 6.12.0-160000.36.1
- (no CPE)range: < 6.12.0-160000.36.1
- (no CPE)range: < 7.0.11-1.1
- (no CPE)range: < 6.12.0-160000.36.1
- (no CPE)range: < 6.12.0-160000.36.1
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/1d55445226c75ddd4e78b09b3e7d99109b28c366nvdPatch
- git.kernel.org/stable/c/222055e6b4063abd2d9e13c3d49bbd1724c50789nvdPatch
- git.kernel.org/stable/c/48b27a955d22391c7f30169fa7b6b2e1977f1ce4nvdPatch
- git.kernel.org/stable/c/80a23c6d1aba35be8746d74ac14e6ba5ae46da21nvdPatch
- git.kernel.org/stable/c/8ebb951a284b7446e025afc7dc5e9516ef9a7214nvdPatch
- git.kernel.org/stable/c/a8ee527807f7d97e55ce2ef2906f7f34975eb1c7nvdPatch
- git.kernel.org/stable/c/aa16dca1b062355181ef215229eeac249d7c0d61nvdPatch
- git.kernel.org/stable/c/d18a3b5d337fa412a38e776e6b4b857a58836575nvdPatch
News mentions
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