CVE-2025-38483 Affecting linux-6.1 package, versions <6.1.153-1~deb11u1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.04% (11th percentile)

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  • Snyk IDSNYK-DEBIAN11-LINUX61-13542064
  • published14 Oct 2025
  • disclosed28 Jul 2025

Introduced: 28 Jul 2025

CVE-2025-38483  (opens in a new tab)

How to fix?

Upgrade Debian:11 linux-6.1 to version 6.1.153-1~deb11u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-6.1 package and not the linux-6.1 package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

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

comedi: das16m1: Fix bit shift out of bounds

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

/* only irqs 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, and 15 are valid */
if ((1 &lt;&lt; it-&gt;options[1]) &amp; 0xdcfc) {

However, it-&gt;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-&gt;options[1] to be within bounds before proceeding with the original test.

CVSS Base Scores

version 3.1