CVE-2026-7007 Division by zero in Zephyr ext2 superblock parsing allows DoS via crafted filesystem image

The Zephyr ext2 file system validates the on-disk superblock in ext2verifydisksuperblock subsys/fs/ext2/ext2impl.c before completing a mount. The validator checked the magic number, block size, revision and feature flags, but did not verify that the on-disk fields sblockspergroup and...

ROS-20260702-73-0029

The vulnerability of the ext2setsize function in the fs/ext2/inode.c module of the Linux kernel file system is related to the copying of buffers without checking the size of the input data a classic buffer overflow attack. Exploiting this vulnerability could allow an attacker to compromise the...

CVE-2026-10645 Out-of-bounds read in Zephyr ext2 directory entry traversal from a crafted filesystem image

The Zephyr ext2 filesystem driver subsys/fs/ext2 trusted the on-disk directory entry fields dereclen and denamelen when walking a directory block. ext2fetchdirentry guarded only with denamelen EXT2MAXFILENAME, but denamelen is a uint8t and EXT2MAXFILENAME is 255, so the check is always false; the...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000946)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-000946 advisory. The mbcache feature in the ext2 and ext4 filesystem implementations in the Linux kernel before 4.6 mishandles xattr block caching, which allows local users to cause ...

CVE-2022-50815

In the Linux kernel, the following vulnerability has been resolved: ext2: Add sanity checks for group and filesystem size Add sanity check that filesystem size does not exceed the underlying device size and that group size is big enough so that metadata can fit into it. This avoid trying to mount...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2025-993311)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-993311 advisory. In the Linux kernel, the following vulnerability has been resolved: ext2: Add more validity checks for inode counts Add checks verifying number of inodes stored in t...

CVE-2023-53323 ext2/dax: Fix ext2_setsize when len is page aligned

In the Linux kernel, the following vulnerability has been resolved: ext2/dax: Fix ext2setsize when len is page aligned PAGEALIGNx macro gives the next highest value which is multiple of pagesize. But if x is already page aligned then it simply returns x. So, if x passed is 0 in daxzerorange...

Linux kernel denial of service vulnerability (CNVD-2016-09487)

The Linux kernel is the kernel used by the operating system Linux, released by the Linux Foundation in the United States. A security vulnerability exists in the mbcache function during ext2 and ext4 filesystem realities in Linux kernel versions 4.5.7 and earlier, which stems from the program...

kernel: Mounting ext2 fs e2fsprogs/tests/f_orphan as ext4 crashes system

A flaw was found in the way the Linux kernel's ext4 file system driver handled non-journal file systems with an orphan list. An attacker with physical access to the system could use this flaw to crash the system or, although unlikely, escalate their privileges on the system...