CVE-2025-38530

HIGH EPSS 5.9%
Published Aug 16, 202510mo ago · Modified Jun 17, 20261w ago
7.1 CVSS 3.1
High
Find Similar
Published Aug 16, 2025 10mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
7.1
Exploitability
1.8
Impact
5.2
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
5.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

Affected Products 14

VendorProductVersionRange
linuxlinux_kernel*≥2.6.30  –  <5.4.297
linuxlinux_kernel*≥5.5  –  <5.10.241
linuxlinux_kernel*≥5.11  –  <5.15.190
linuxlinux_kernel*≥5.16  –  <6.1.147
linuxlinux_kernel*≥6.2  –  <6.6.100
linuxlinux_kernel*≥6.7  –  <6.12.40
linuxlinux_kernel*≥6.13  –  <6.15.8
linuxlinux_kernel6.16any
linuxlinux_kernel6.16any
linuxlinux_kernel6.16any
linuxlinux_kernel6.16any
linuxlinux_kernel6.16any
linuxlinux_kernel6.16any
debiandebian_linux11.0any

References 10

  • git.kernel.org https://git.kernel.org/stable/c/0489c30d080f07cc7f09d04de723d8c2ccdb61ef
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/16c173abee315953fd17a279352fec4a1faee862
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/29ef03e5b84431171d6b77b822985b54bc44b793
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/374d9b3eb4b08407997ef1fce96119d31e0c0bc4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5bfa301e1e59a9b1a7b62a800b54852337c97416
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7e470d8efd10725b189ca8951973a8425932398a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a27e27eee313fe1c450b6af1e80e64412546cab4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b14b076ce593f72585412fc7fd3747e03a5e3632
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
    Mailing ListThird Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
    Mailing ListThird Party Advisory

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0489c30d080f07cc7f09d04de723d8c2ccdb61ef
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/16c173abee315953fd17a279352fec4a1faee862
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/29ef03e5b84431171d6b77b822985b54bc44b793
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/374d9b3eb4b08407997ef1fce96119d31e0c0bc4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5bfa301e1e59a9b1a7b62a800b54852337c97416
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7e470d8efd10725b189ca8951973a8425932398a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a27e27eee313fe1c450b6af1e80e64412546cab4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b14b076ce593f72585412fc7fd3747e03a5e3632
    Patch