Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ext4: Fix for accessing an uninitialized lock in the fc replay path. The following kernel trace can be triggered with fstest generic/629 when executed against a filesystem with the fast-commit feature enabled: INFO: Trying to...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: ext4: checks dot and dotdot of dxroot before making dir indexed Syzbot reports the following issue: ============================================ BUG: Unable to handle page fault for address: ffffed11022e24fe PGD 23ffee067 P4D...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ext4: Do not create EA inodes under the buffer lock The ext4xattrsetentry function creates new EA inodes while holding the buffer lock on the external xattr block. This is problematic because all allocation-related locking...

Siemens RuggedCom Rox Integer Overflow or Wraparound (CVE-2024-57256)

An integer overflow in ext4fsreadsymlink in Das U-Boot before 2025.01-rc1 occurs for zalloc adding one to an le32 variable via a crafted ext4 filesystem with an inode size of 0xffffffff, resulting in a malloc of zero and resultant memory overwrite. This plugin only works with Tenable.ot. Please...

Siemens RuggedCom Rox Integer Underflow (Wrap or Wraparound) (CVE-2019-13104)

In Das U-Boot versions 2016.11-rc1 through 2019.07-rc4, an underflow can cause memcpy to overwrite a very large amount of data including the whole stack while reading a crafted ext4 filesystem. This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for mo...

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-2026-45985

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...

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-2026-45912

A flaw was found in the Linux kernel's ext4 filesystem. During certain file operations, specifically when splitting data extents, an issue with caching can lead to incorrect tracking of disk space. This can result in errors in space accounting, potentially impacting data integrity and the overall...

CVE-2026-45942

A flaw was found in the Linux kernel's ext4 filesystem. A race condition exists between page migration and bitmap modification within the loadbuddy function. This can lead to bitmap inconsistencies and false positive corruption reports during certain workloads. This issue can affect data integrit...

CVE-2026-45985

A flaw was found in the Linux kernel's ext4 filesystem. When allocating blocks for direct I/O DIO and writeback, an incorrect flag handling during extent splitting could lead to a mismatch between the on-disk extent status and the extent status tree. This issue, particularly when a temporary erro...

CVE-2026-46046

A flaw was found in the Linux kernel's ext4 filesystem. A reference count refcount leak occurs in the ext4xattrinodedecrefall function. This issue arises because the iloc.bh buffer head, acquired by ext4getinodeloc, is not properly released with brelse. This can lead to resource exhaustion or...

EUVD-2026-32378

In the Linux kernel, the following vulnerability has been resolved: ext4: don't cache extent during splitting extent Caching extents during the splitting process is risky, as it may result in stale extents remaining in the status tree. Moreover, in most cases, the corresponding extent block entri...

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...

CVE-2026-45942

Summary of CVE-2026-45942 : A race condition in the Linux kernel ext4 bitmap handling enables inconsistent bitmap reporting due to concurrent page migration and bitmap modification in the load_buddy path. The root cause is that the fast load_buddy path only increments the folio refcount and can o...

CVE-2026-45858 ext4: don't zero the entire extent if EXT4_EXT_DATA_PARTIAL_VALID1

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...

CVE-2026-45948

ext4: fix memory leak in ext4extshiftextents...

PT-2026-43787

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the ext4 file system where a double decrement of the dirty clusters counter occurs during file system shutdown. This happens in the error path between the ext4 mb mark...

Ubuntu 20.04 LTS : Linux kernel (GCP) vulnerabilities (USN-8297-1)

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8297-1 advisory. Stonejiajia, Shir Tamari and Sagi Tzadik discovered that the OverlayFS implementation in the Ubuntu Linux kernel did not properly perform permission chec...