Description

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

media: rkisp1: Fix IRQ disable race issue

In rkisp1_isp_stop() and rkisp1_csi_disable() the driver masks the
interrupts and then apparently assumes that the interrupt handler won't
be running, and proceeds in the stop procedure. This is not the case, as
the interrupt handler can already be running, which would lead to the
ISP being disabled while the interrupt handler handling a captured
frame.

This brings up two issues: 1) the ISP could be powered off while the
interrupt handler is still running and accessing registers, leading to
board lockup, and 2) the interrupt handler code and the code that
disables the streaming might do things that conflict.

It is not clear to me if 2) causes a real issue, but 1) can be seen with
a suitable delay (or printk in my case) in the interrupt handler,
leading to board lockup.

Classification

CVE ID: CVE-2023-52589

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.05% (probability of being exploited)

EPSS Percentile: 17.81% (scored less or equal to compared to others)

EPSS Date: 2025-02-03 (when was this score calculated)

References

https://git.kernel.org/stable/c/bf808f58681cab64c81cd814551814fd34e540fe
https://git.kernel.org/stable/c/fab483438342984f2a315fe13c882a80f0f7e545
https://git.kernel.org/stable/c/7bb1a2822aa2c2de4e09bf7c56dd93bd532f1fa7
https://git.kernel.org/stable/c/870565f063a58576e8a4529f122cac4325c6b395

Timeline