Unchecked Return Value in Linux kernel - CVE-2026-90406

Vulnerability identifier: #VU152198

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-2026-90406

CWE-ID: CWE-252

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to cause a runtime power-management reference imbalance.

The vulnerability exists due to unchecked return values in iris_core_deinit() when runtime power-management resume fails during core deinitialization. A local user can trigger core deinitialization while runtime power-management resume fails to cause a runtime power-management reference imbalance.

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/75d79879ec3cbfd288144b0ae4c3e3fa7700c5fc
• https://git.kernel.org/stable/c/cb83cfff8dff5d546fadce15596e01b1504b632a
• https://git.kernel.org/stable/c/e7768f3dae9f2c6e5b80e9c02429550ea39f2be6

• Unchecked Return Value in Linux kernel qcom iris driver
• Ubuntu update for linux-oem-7.0
• Ubuntu update for linux, linux-aws, linux-gcp and more