Improper resource shutdown or release in Linux kernel - CVE-2026-89889

Vulnerability identifier: #VU150397

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-2026-89889

CWE-ID: CWE-404

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to cause a runtime PM reference leak.

The vulnerability exists due to improper resource release in the imx415_s_ctrl VBLANK control path when handling VBLANK control operations. A local user can cause VMAX programming to fail after a runtime PM reference is acquired to cause a runtime PM reference leak.

The issue occurs only when programming the VMAX register fails.

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/1aa66bb3ba440aabb3bfe65ba5f19bef86a0f823
• https://git.kernel.org/stable/c/46c63cc1c1aefa08d3126000d5b56dabb62e801f
• https://git.kernel.org/stable/c/bea3001e0f32527a291444e527e84a7ea9b546d4

• Improper resource shutdown or release in Linux kernel media i2c driver
• Ubuntu update for linux-oem-7.0
• Ubuntu update for linux, linux-aws, linux-gcp and more