Improper control of a resource through its lifetime in Linux kernel - CVE-2026-74462

Vulnerability identifier: #VU143326

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-74462

CWE-ID: CWE-664

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 resource state handling in the i.MX I2C bus driver when processing I2C transfers during the noirq suspend and resume window. A local user can trigger an I2C transfer while the controller resources are unavailable to cause a denial of service.

The issue occurs on affected i.MX platforms when periodic workqueues or timer-driven activity continue issuing transfers as hardware resources such as clocks or pin control are disabled or not yet restored.

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 kernel - update to 7.0 rc3
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/00d86dd5c2034e0e139e4806137b3b43e07ddd83
• https://git.kernel.org/stable/c/7a5db225ab5a6b095f6c37197b3b114921d85541
• https://git.kernel.org/stable/c/ec8e15e3e5c7e8180b13399f5a5aff8415bf16c5

• Improper control of a resource through its lifetime in Linux kernel i2c busses driver
• Ubuntu update for linux-oem-7.0
• Ubuntu update for linux, linux-aws, linux-gcp and more