VYPR
← All advisories
High severity7.1NVD Advisory· Published Aug 16, 2025· Updated Jun 17, 2026

CVE-2025-38530

CVE-2025-38530

Description

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

comedi: pcl812: Fix bit shift out of bounds

When checking for a supported IRQ number, the following test is used:

if ((1 << it->options[1]) & board->irq_bits) {

However, it->options[i] is an unchecked int value from userspace, so the shift amount could be negative or out of bounds. Fix the test by requiring it->options[1] to be within bounds before proceeding with the original test. Valid it->options[1] values that select the IRQ will be in the range [1,15]. The value 0 explicitly disables the use of interrupts.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

128

Patches

Vulnerability mechanics

References

10

News mentions

0

No linked articles in our index yet.