Out-of-bounds read in Linux kernel - CVE-2026-90205

Vulnerability identifier: #VU151279

CSH Severity: Low

CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-90205

CWE-ID: CWE-125

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to read memory out of bounds.

The vulnerability exists due to an out-of-bounds read in ocfs2_wipe_inode when processing a corrupted OCFS2 dinode marked with OCFS2_ORPHANED_FL. A local user can cause OCFS2 to process a dinode whose i_orphaned_slot is outside the mounted filesystem slot range to read memory out of bounds.

Linux kernel
Debian Linux
Ubuntu
linux (Ubuntu package)
linux-aws (Ubuntu package)
linux-gcp (Ubuntu package)
linux-oracle (Ubuntu package)
linux-ibm (Ubuntu package)
linux-hwe-7.0 (Ubuntu package)
linux-oem-7.0 (Ubuntu package)
linux (Debian package)

Install security update from vendor's repository.

linux (Ubuntu package) - update to 7.0.0-42.42
linux-aws (Ubuntu package) - update to 7.0.0-1016.17
linux-gcp (Ubuntu package) - update to 7.0.0-1016.18
linux-oracle (Ubuntu package) - update to 7.0.0-1015.16
linux-ibm (Ubuntu package) - update to 7.0.0-1017.17
linux-hwe-7.0 (Ubuntu package) - update to 7.0.0-42.42~24.04.1
linux-oem-7.0 (Ubuntu package) - update to 7.0.0-1017.17
linux (Debian package) - update to 6.12.115-2

• https://git.kernel.org/stable/c/3d7c4b7ce7b4baedfd8699fa692cd95f77d332de
• https://git.kernel.org/stable/c/b2d31acbd3b182755b019183fb46949ba5e39b9f
• https://git.kernel.org/stable/c/c6c908f9b4edfb04534b15573168ae038f7a9cbf

• Out-of-bounds read in Linux kernel ocfs2
• Debian update for linux
• Ubuntu update for linux-oem-7.0
• Ubuntu update for linux, linux-aws, linux-gcp and more