CVE-2024-35819

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

Description The issue is related to the qbman component of the Linux kernel, where the smp call function always runs its callback in hard IRQ context, even on PREEMPT RT, where spinlocks can sleep. This requires the use of a raw spinlock for cgr lock to prevent waiting on a sleeping task. The bug was not apparent until commit ef2a8d5478b9 ("net: dpaa: Adjust queue depth on rate change") which invokes smp call function single via qman update cgr safe every time a link goes up or down.

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