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

In the Linux kernel, the following vulnerabilities have been resolved: ext4: Fixed a slab-use-after-free in ext4splitextentat. We encountered the following use-after-free issues: BUG: KASAN: slab-use-after-free in ext4splitextentat+0xba8/0xcc0 Read of size 2 at addr ffff88810548ed08 by task...

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...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-400876)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-400876 advisory. In the Linux kernel, the following vulnerability has been resolved: ext4: fix slab-use-after-free in ext4splitextentat We hit the following use-after-free:...

ext4 Heap Buffer Overflow DoS

The vulnerability of the ext4splitextentat function in the fs/ext4/extents.c file of the Linux kernel’s file system ext4 is related to the reutilization of previously freed memory. Exploiting this vulnerability could allow an attacker to compromise the confidentiality, integrity, and accessibilit...

PT-2021-29278

Name of the Vulnerable Software and Affected Versions Linux Kernel versions prior to v5.12.10 Description A bug was found in the ext4 es cache extent function, where ext4 split extent at failed. The actual impact and attack plausibility have not yet been proven. Recommendations For Linux Kernel...

PT-2021-25284

Name of the Vulnerable Software and Affected Versions: Linux Kernel versions prior to v5.12.10 Description: A bug was found in the ext4 es cache extent function, where ext4 split extent at failed. The actual impact and attack plausibility have not yet been proven. Recommendations: For Linux Kerne...

PT-2021-25224

Name of the Vulnerable Software and Affected Versions Linux Kernel versions prior to v5.4.125 Description A bug was found in the ext4 es cache extent function, where ext4 split extent at failed. The actual impact and attack plausibility of this issue have not yet been proven. Recommendations For...

PT-2021-25211

Name of the Vulnerable Software and Affected Versions Linux Kernel versions prior to v4.19.194 Description A bug was found in the ext4 es cache extent function, where ext4 split extent at failed. The actual impact and attack plausibility have not yet been proven. Recommendations For Linux Kernel...

PT-2021-29180

Name of the Vulnerable Software and Affected Versions Linux Kernel versions prior to v4.4.272 Description A bug was found in the ext4 es cache extent function, where ext4 split extent at failed. The actual impact and attack plausibility have not yet been proven. Recommendations For Linux Kernel...