CVE-2023-52589

/// Technical 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.

/// 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