Missing Release of Resource after Effective Lifetime in Linux kernel - CVE-2026-90396

Vulnerability identifier: #VU151076

CSH Severity: Low

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

CVE-ID: CVE-2026-90396

CWE-ID: CWE-772

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper error handling in the __blkdev_direct_IO function when an integrity mapping fails during a direct I/O operation with metadata. A local user can perform a direct I/O operation with metadata during an integrity mapping failure to cause a denial of service.

Linux kernel
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)

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

• https://git.kernel.org/stable/c/702a2a9f3dfe066a7481698c858371112f3cb697
• https://git.kernel.org/stable/c/cbbaf0c870dde06cf4b887a77a94e3094179ca9f
• https://git.kernel.org/stable/c/d29c5a88d5703afb6286038e86e1b88daa4962a9

• Missing Release of Resource after Effective Lifetime in Linux kernel block
• Ubuntu update for linux-oem-7.0
• Ubuntu update for linux, linux-aws, linux-gcp and more