CVE-2026-53331

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A deadlock can occur in the slimbus qcom-ngd-ctrl component due to an ABBA lock inversion. During SSR/PDR down notification, the qcom slim ngd ssr pdr notify() function acquires the tx lock and subsequently calls qcom slim ngd down(), which leads to slim report absent() attempting to acquire the ctrl->lock. Because other code paths acquire these locks in the opposite order (first ctrl->lock then tx lock), a circular dependency is created that can lead to a system deadlock.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.