vulnerability

Debian: CVE-2025-38482: linux, linux-6.1 -- security update

Severity
6
CVSS
(AV:L/AC:L/Au:S/C:C/I:N/A:C)
Published
Jul 31, 2025
Added
Jul 31, 2025
Modified
Jan 8, 2026

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.

Solutions

debian-upgrade-linuxdebian-upgrade-linux-6-1no-fix-debian-deb-package
Title
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