CVE-2026-89601

A flaw was found in the Linux kernel's ext2 filesystem. This vulnerability occurs in the ext2setsize and ext2xattrset2 functions, where inode updates for ISSYNC inodes may be lost. This happens because the syncinodemetadata function only processes inodes that are already marked as dirty, leading ...

CVE-2026-89601

In the Linux kernel, the following vulnerability has been resolved: ext2: Fix lost inode updates for ISSYNC inodes ext2setsize and ext2xattrset2 had a construct like: if ISSYNCinode syncinodemetadatainode, 1; else markinodedirtyinode; which leads to lost inode updates for ISSYNC inodes because...

CVE-2026-89601

CVE-2026-89601 affects the Linux kernel ext2 filesystem. The vulnerability resides in ext2_setsize() and ext2_xattr_set2() , where for IS_SYNC inodes, the code called sync_inode_metadata() without first marking the inode dirty. Since sync_inode_metadata() only operates on already-dirty inodes, in...

EUVD-2026-76513

In the Linux kernel, the following vulnerability has been resolved: ext2: Fix lost inode updates for ISSYNC inodes ext2setsize and ext2xattrset2 had a construct like: if ISSYNCinode syncinodemetadatainode, 1; else markinodedirtyinode; which leads to lost inode updates for ISSYNC inodes because...

CVE-2026-89601 ext2: Fix lost inode updates for IS_SYNC inodes

In the Linux kernel, the following vulnerability has been resolved: ext2: Fix lost inode updates for ISSYNC inodes ext2setsize and ext2xattrset2 had a construct like: if ISSYNCinode syncinodemetadatainode, 1; else markinodedirtyinode; which leads to lost inode updates for ISSYNC inodes because...

PT-2026-90317

In the Linux kernel, the following vulnerability has been resolved: ext2: Fix lost inode updates for IS SYNC inodes ext2 setsize and ext2 xattr set2 had a construct like: if IS SYNCinode sync inode metadatainode, 1; else mark inode dirtyinode; which leads to lost inode updates for IS SYNC inodes...

CVE-2026-13478

The Zephyr ext2 filesystem driver validates the on-disk block bitmap in ext2initfs subsys/fs/ext2/ext2impl.c by passing fsblocks = sblockscount - sfirstdatablock to ext2bitmapcountset. That helper subsys/fs/ext2/ext2bitmap.c treats its argument as a number of bits and reads one bitmap byte per...

CVE-2026-13478 Out-of-bounds read in Zephyr ext2 block-bitmap validation from a crafted s_blocks_count

The Zephyr ext2 filesystem driver validates the on-disk block bitmap in ext2initfs subsys/fs/ext2/ext2impl.c by passing fsblocks = sblockscount - sfirstdatablock to ext2bitmapcountset. That helper subsys/fs/ext2/ext2bitmap.c treats its argument as a number of bits and reads one bitmap byte per...

CVE-2026-13478

CVE-2026-13478 is an out-of-bounds read in the Zephyr RTOS ext2 filesystem driver. During mount, ext2_init_fs() passes the superblock's s_blocks_count (unbounded) to ext2_bitmap_count_set(), which then reads up to ~512 MB past the single block-size bitmap buffer when a crafted image specifies an ...

CVE-2026-13478 Out-of-bounds read in Zephyr ext2 block-bitmap validation from a crafted s_blocks_count

The Zephyr ext2 filesystem driver validates the on-disk block bitmap in ext2initfs subsys/fs/ext2/ext2impl.c by passing fsblocks = sblockscount - sfirstdatablock to ext2bitmapcountset. That helper subsys/fs/ext2/ext2bitmap.c treats its argument as a number of bits and reads one bitmap byte per...

EUVD-2026-65599

The Zephyr ext2 filesystem driver validates the on-disk block bitmap in ext2initfs subsys/fs/ext2/ext2impl.c by passing fsblocks = sblockscount - sfirstdatablock to ext2bitmapcountset. That helper subsys/fs/ext2/ext2bitmap.c treats its argument as a number of bits and reads one bitmap byte per...

CVE-2026-13215

The Zephyr ext2 filesystem driver fails to validate the slogblocksize field of the on-disk superblock when mounting a filesystem. ext2verifydisksuperblock in subsys/fs/ext2/ext2impl.c checks the magic number, revision, inode size and group counts, but never bounds slogblocksize. On a successful...

EUVD-2026-65292

The Zephyr ext2 filesystem driver fails to validate the slogblocksize field of the on-disk superblock when mounting a filesystem. ext2verifydisksuperblock in subsys/fs/ext2/ext2impl.c checks the magic number, revision, inode size and group counts, but never bounds slogblocksize. On a successful...

CVE-2026-13215

The Zephyr RTOS ext2 filesystem driver fails to bounds-check the s_log_block_size field in ext2_verify_disk_superblock() (subsys/fs/ext2/ext2_impl.c). A crafted value causes the computed block size (1024 <

CVE-2026-13215 Zephyr ext2 mount: unvalidated superblock block size causes out-of-bounds write from a crafted filesystem image

The Zephyr ext2 filesystem driver fails to validate the slogblocksize field of the on-disk superblock when mounting a filesystem. ext2verifydisksuperblock in subsys/fs/ext2/ext2impl.c checks the magic number, revision, inode size and group counts, but never bounds slogblocksize. On a successful...

CVE-2026-13215 Zephyr ext2 mount: unvalidated superblock block size causes out-of-bounds write from a crafted filesystem image

The Zephyr ext2 filesystem driver fails to validate the slogblocksize field of the on-disk superblock when mounting a filesystem. ext2verifydisksuperblock in subsys/fs/ext2/ext2impl.c checks the magic number, revision, inode size and group counts, but never bounds slogblocksize. On a successful...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ext2/dax: Fixed ext2setsize when len is page-aligned. The PAGEALIGNx macro returns the next highest value that is a multiple of the page size. However, if x is already page-aligned, it simply returns x. Therefore, if x is passed ...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: ext2: Added more validation checks for inode counts. Checks were added to ensure that the number of inodes stored in the superblock matches the number calculated based on the number of inodes per group. It was also verified th...

Astra Linux – Vulnerabilities in Linux, Linux-5.15, Linux-5.10

In the Linux kernel, the following vulnerability has been resolved: ext2: Check block size validity during mount It is necessary to ensure that the value of the block size recorded in the superblock is valid. Otherwise, the shift operation used to calculate the block size may overflow, resulting ...

CVE-2026-74362

A flaw was found in the Linux kernel's ext2 filesystem. When performing write operations on files opened with OSYNC or ODSYNC flags, the system call write2 could incorrectly report success to a local user even if the data synchronization to disk failed. This could lead to data integrity issues, a...