CVE-2025-70101

An out-of-bounds read in the ext4extbinsearchidx function in src/ext4extent.c of the lwext4 1.0.0 library allows attackers to cause a denial of service by supplying a specially crafted ext4 filesystem image. The vulnerability occurs due to insufficient validation of extent header fields before...

CVE-2025-70100: Divide By Zero

A divide-by-zero vulnerability in the ext4blocksetlbsize function in src/ext4blockdev.c of the lwext4 1.0.0 library allows attackers to cause a denial of service by providing a malformed ext4 filesystem image that results in a zero logical block size. The vulnerability is triggered during mount o...

CVE-2025-70099

A NULL pointer dereference in the ext4direngetnamelen function in include/ext4dir.h of lwext4 1.0.0 allows attackers to cause a denial of service by supplying a specially crafted EXT4 filesystem image with malformed directory entries. During directory iteration, the code may fail to validate the...

CVE-2025-70099

A NULL pointer dereference in the ext4direngetnamelen function in include/ext4dir.h of lwext4 1.0.0 allows attackers to cause a denial of service by supplying a specially crafted EXT4 filesystem image with malformed directory entries. During directory iteration, the code may fail to validate the...

CVE-2025-70099

A NULL pointer dereference in the ext4direngetnamelen function in include/ext4dir.h of lwext4 1.0.0 allows attackers to cause a denial of service by supplying a specially crafted EXT4 filesystem image with malformed directory entries. During directory iteration, the code may fail to validate the...

CVE-2025-70099

A NULL pointer dereference in the ext4direngetnamelen function in include/ext4dir.h of lwext4 1.0.0 allows attackers to cause a denial of service by supplying a specially crafted EXT4 filesystem image with malformed directory entries. During directory iteration, the code may fail to validate the...

CVE-2025-70099

The lwext4 embedded library (version 1.0.0 ) contains a NULL pointer dereference vulnerability within the ext4_dir_en_get_name_len function in include/ext4_dir.h. This flaw occurs because the code fails to validate the directory entry pointer before accessing the name_len field during directory i...

PT-2026-45548

Name of the Vulnerable Software and Affected Versions lwext4 version 1.0.0 Description A NULL pointer dereference occurs in the ext4 dir en get name len function within the include/ext4 dir.h file. This issue allows an attacker to trigger a denial of service by providing a specially crafted EXT4...

CVE-2026-46094

A flaw was found in the Linux kernel's ext4 filesystem, specifically in the checkxattrs function. A local attacker could exploit a bounds check error, allowing an out-of-bounds read when processing extended attributes xattrs. This could lead to memory corruption, potentially causing a denial of...

CVE-2026-45858

A flaw was found in the Linux kernel's ext4 filesystem. This vulnerability occurs during the splitting of unwritten data blocks, where a portion of the data may be incorrectly marked as written while still containing stale, uninitialized information. A local attacker could potentially exploit thi...

SUSE CVE-2026-45858

In the Linux kernel, the following vulnerability has been resolved: ext4: don't zero the entire extent if EXT4EXTDATAPARTIALVALID1 When allocating initialized blocks from a large unwritten extent, or when splitting an unwritten extent during end I/O and converting it to initialized, there is...

SUSE CVE-2026-45892

In the Linux kernel, the following vulnerability has been resolved: ext4: drop extent cache after doing PARTIALVALID1 zeroout When splitting an unwritten extent in the middle and converting it to initialized in ext4splitextent with the EXT4EXTMAYZEROOUT and EXT4EXTDATAVALID2 flags set, it could...

SUSE CVE-2026-45899

In the Linux kernel, the following vulnerability has been resolved: ext4: drop extent cache when splitting extent fails When the split extent fails, we might leave some extents still being processed and return an error directly, which will result in stale extent entries remaining in the extent...

SUSE CVE-2026-45920

In the Linux kernel, the following vulnerability has been resolved: ext4: fix dirtyclusters double decrement on fs shutdown fstests test generic/388 occasionally reproduces a warning in ext4putsuper associated with the dirty clusters count: WARNING: CPU: 7 PID: 76064 at fs/ext4/super.c:1324...

SUSE CVE-2026-45942

In the Linux kernel, the following vulnerability has been resolved: ext4: fix e4b bitmap inconsistency reports A bitmap inconsistency issue was observed during stress tests under mixed huge-page workloads. Ext4 reported multiple e4b bitmap check failures like: ext4mbcomplexscangroup:2508: group...

SUSE CVE-2026-45948

In the Linux kernel, the following vulnerability has been resolved: ext4: fix memory leak in ext4extshiftextents In ext4extshiftextents, if the extent is NULL in the while loop, the function returns immediately without releasing the path obtained via ext4findextent, leading to a memory leak. Fix...

SUSE CVE-2026-45985

In the Linux kernel, the following vulnerability has been resolved: ext4: don't set EXT4GETBLOCKSCONVERT when splitting before submitting I/O When allocating blocks during within-EOF DIO and writeback with dioreadnolock enabled, EXT4GETBLOCKSPREIO was set to split an existing large unwritten...

SUSE CVE-2026-46046

In the Linux kernel, the following vulnerability has been resolved: ext4: fix missing brelse in ext4xattrinodedecrefall The commit c8e008b60492 "ext4: ignore xattrs past end" introduced a refcount leak in when blockcsum is false. ext4xattrinodedecrefall calls ext4getinodeloc to get iloc.bh, but...

CVE-2026-45892

A flaw was found in the Linux kernel's ext4 filesystem. This vulnerability occurs during certain buffered write operations when splitting unwritten data blocks, known as extents. A logic error can lead to an inconsistency where the filesystem's internal record of data blocks the extent status tre...

CVE-2026-45899

A flaw was found in the Linux kernel, specifically within the ext4 filesystem's extent cache management. When an operation to split an extent fails, the system may not properly clear all related entries, leading to stale extent entries remaining in the extent status tree. This can result in data...