CVE-2026-80661

Technical Description

In the Linux kernel, the following vulnerability has been resolved:

ufs: core: tracing: Do not dereference pointers in TP_printk()

The trace events in drivers/ufs/core/ufs_trace.h were converted to take a

pointer to the hba structure as an argument for the tracepoint and then in

TP_printk() the printing of the dev_name from the ring buffer was

converted to using the dev dereferenced pointer from the hba saved

pointer.

This is not allowed as the TP_printk() is executed at the time the trace

event is read from /sys/kernel/tracing/trace file. That can happen

literally, seconds, minutes, hours, weeks, days, or even months later!

There is no guarantee that the hba pointer will still exist by the time it

is dereferenced when the "trace" file is read.

Instead, save the device name from the hba pointer at the time the

tracepoint is called and place it into the ring buffer event. Then the

TP_printk() can read the name directly from the ring buffer and remove the

possibility that it will rea

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References