CVE-2026-92502

A flaw was found in the Linux kernel's ext4 filesystem. When the system is configured with data=journal mode, a local attacker could exploit a race condition during system reboot. This issue prevents the proper clearing of internal data flags, which can lead to data loss or corruption during the...

CVE-2026-92501

A flaw was found in the Linux kernel's ext4 filesystem. A race condition exists during direct I/O DIO operations when the system falls back to buffered I/O. This unprotected timing window allows concurrent I/O operations to incorrectly invalidate cached data, leading to input/output I/O errors. A...

CVE-2026-92500

A flaw was found in the Linux kernel's ext4 filesystem. A race condition can occur during data write operations when the system attempts to handle inline data concurrently. This timing issue can lead to a system crash, causing a denial of service, or potentially result in data loss. Mitigation...

CVE-2026-92499

A flaw was found in the Linux kernel's ext4 filesystem. A local attacker with the ability to create or manipulate a corrupted directory can trigger a use-after-free vulnerability. This occurs when the ext4readdir function attempts to read directory entries from an invalid offset, leading to an...

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...

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, and Linux 5.15

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 – 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 – 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 found in Linux 5.10, Linux 6.1, and Linux 5.15

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...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

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, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ext4: detecting invalid INLINEDATA + EXTENTS flag combinations The syzbot reported a BUGON in ext4escacheextent when opening a Verity file on a corrupted ext4 filesystem that was mounted without a journal. The issue arises when t...

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 – Vulnerability in u-boot

The U-Boot versions from 2016.09 to 2019.07-rc4 can memset too much data while reading a crafted ext4 filesystem. This results in a stack buffer overflow, potentially leading to code execution...

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 5.10, Linux

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 – Vulnerability found in Linux 5.10, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ext4: Avoid potential buffer over-reading in parseapplysbmountoptions. Unlike other strings in the ext4 superblock, we rely on tune2fs to ensure that smountopts is terminated with NUL. We need to make parseapplysbmountoptions mor...

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...