kernel: ext4: fix e4b bitmap inconsistency reports

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-2026-92494

A flaw was found in the Linux kernel's ext4 filesystem. When handling orphan file blocks, the system may fail to properly release memory resources if block validation checks fail. This memory leak could lead to resource exhaustion over time, potentially resulting in a Denial of Service DoS for th...

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 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 – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ext4: Reject mounting if bigalloc with sfirstdatablock != 0. bigalloc with sfirstdatablock != 0 is not supported; mounting will be rejected...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

A use-after-free vulnerability was discovered in the Linux kernel’s ext4 file system, particularly regarding the handling of the additional inode size for extended attributes. This flaw could allow a privileged local user to cause a system crash or other undefined behaviors...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: ext4: Avoid allocating blocks from a corrupted group in ext4mbfindbygoal. The issue is as follows: … EXT4-fs mmcblk0p1: Delayed block allocation failed for inode 206 at logical offset 0, with a maximum of 1 block, and an error...

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

A issue was discovered in the Linux kernel before version 6.3.3. There is an out-of-bounds read in the crc16 function in lib/crc16.c when called from fs/ext4/super.c, because ext4groupdesccsum does not properly check an offset. NOTE: This issue is disputed by third parties, as the kernel is not...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: ext4: Avoid infinite loops caused by residual data On the mkdir/mknod path, when mapping logical blocks to physical blocks, if inserting a new extent into the extent tree fails in this example, because the file system disables...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ext4: Do not set SBRDONLY after filesystem errors When the filesystem is mounted with errors=remount-ro, we previously set the SBRDONLY flag to prevent any further modifications to the filesystem. We knew that this approach misse...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ext4: Regenerate the buddy structure after block freeing fails when under fc replay. This fix primarily reverts to commit 6bd97bf273bd “ext4: Remove redundant mbregeneratebuddy”, and reintroduces the function mbregeneratebuddy...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ext4: Convert inline data to extents when truncate exceeds inline size A check has been added to ext4setattr to convert files from inline data storage to extent-based storage when the truncate function increases the file size...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: ext4: Fixed the issue where iloc.bh was leaked during the error paths of ext4fcreplayinode. During code review, Joseph discovered that ext4fcreplay inode calls ext4getfc inodelocation, which accesses iloc.bh. This reference mu...

Linux Distros Unpatched Vulnerability : CVE-2026-89557

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - md: do overflow check for sb-bblogshift in super1load In super1load, sb-bblogshift is an u8 type value loaded from on- disk superblock. It is used for badblock...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-053405)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-053405 advisory. In the Linux kernel, the following vulnerability has been resolved: ext4: update sjournalinum if it changes after journal replay When mounting a crafted ext4 image,...

OESA-2026-3704 kernel security update

The Linux Kernel, the operating system core itself. Security Fixes: In the Linux kernel, the following vulnerability has been resolved: net: hns3: add VLAN id validation before using Currently, the VLAN id may be used without validation when receive a VLAN configuration mailbox from VF. The lengt...

CVE-2026-80808

In the Linux kernel, the following vulnerability has been resolved: ext4: stop retrying saturated xattr cache entries ext4xattrblockset retries when a cache entry selected for reuse has a saturated reference count after taking the buffer lock. The retry returns to the mbcache lookup without makin...

AZL-99669 CVE-2026-80806 affecting package kernel for versions less than 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: ext4: don't enable DAX on new encrypted files Currently, when a new encrypted regular file is created, the call to ext4setinodeflagsinode, init=true in ext4newinode is made before EXT4INODEENCRYPT is set. As a result, it can set...

EUVD-2026-71243

In the Linux kernel, the following vulnerability has been resolved: ext4: stop retrying saturated xattr cache entries ext4xattrblockset retries when a cache entry selected for reuse has a saturated reference count after taking the buffer lock. The retry returns to the mbcache lookup without makin...

EUVD-2026-71241

In the Linux kernel, the following vulnerability has been resolved: ext4: don't enable DAX on new encrypted files Currently, when a new encrypted regular file is created, the call to ext4setinodeflagsinode, init=true in ext4newinode is made before EXT4INODEENCRYPT is set. As a result, it can set...