CVE-2025-38482

medium

Description

In the Linux kernel, the following vulnerability has been resolved: comedi: das6402: Fix bit shift out of bounds When checking for a supported IRQ number, the following test is used: /* IRQs 2,3,5,6,7, 10,11,15 are valid for "enhanced" mode */ if ((1 << it->options[1]) & 0x8cec) { 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.

References

https://git.kernel.org/stable/c/a18a42e77545afcacd6a2b8d9fc16191b87454df

https://git.kernel.org/stable/c/8a3637027ceeba4ca5e500b23cb7d24c25592513

https://git.kernel.org/stable/c/70f2b28b5243df557f51c054c20058ae207baaac

https://git.kernel.org/stable/c/4a3c18cde02e35aba87e0ad5672b3e1c72dda5a4

https://git.kernel.org/stable/c/3eab654f5d199ecd45403c6588cda63e491fcfca

Details

Source: Mitre, NVD

Published: 2025-07-28

Updated: 2025-07-29

Risk Information

CVSS v2

Base Score: 6.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium

EPSS

EPSS: 0.00018