CVE-2025-38668

MEDIUM EPSS 4.4%
Published Aug 22, 202510mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Aug 22, 2025 10mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: regulator: core: fix NULL dereference on unbind due to stale coupling data Failing to reset coupling_desc.n_coupled after freeing coupled_rdevs can lead to NULL pointer dereference when regulators are accessed post-unbind. This can happen during runtime PM or other regulator operations that rely on coupling metadata. For example, on ridesx4, unbinding the 'reg-dummy' platform device triggers a panic in regulator_lock_recursive() due to stale coupling state. Ensure n_coupled is set to 0 to prevent access to invalid pointers.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
4.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 12

VendorProductVersionRange
linuxlinux_kernel*≥5.3  –  <5.4.297
linuxlinux_kernel*≥5.5  –  <5.10.241
linuxlinux_kernel*≥5.11  –  <5.15.190
linuxlinux_kernel*≥5.16  –  <6.1.148
linuxlinux_kernel*≥6.2  –  <6.6.101
linuxlinux_kernel*≥6.7  –  <6.12.41
linuxlinux_kernel*≥6.13  –  <6.15.9
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/233d3c54c9620e95193923859ea1d0b0f5d748ca
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5d4261dbb3335221fd9c6e69f909ba79ee6663a7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6c49eac796681e250e34156bafb643930310bd4a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7574892e259bbb16262ebfb4b65a2054a5e03a49
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/800a2cfb2df7f96b3fb48910fc595e0215f6b019
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ca46946a482238b0cdea459fb82fc837fb36260e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ca9bef9ba1a6be640c87bf802d2e9e696021576a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d7e59c5fd7a0f5e16e75a30a89ea2c4ab88612b8
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
    Third Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
    Third Party Advisory

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/233d3c54c9620e95193923859ea1d0b0f5d748ca
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5d4261dbb3335221fd9c6e69f909ba79ee6663a7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/6c49eac796681e250e34156bafb643930310bd4a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7574892e259bbb16262ebfb4b65a2054a5e03a49
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/800a2cfb2df7f96b3fb48910fc595e0215f6b019
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ca46946a482238b0cdea459fb82fc837fb36260e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ca9bef9ba1a6be640c87bf802d2e9e696021576a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d7e59c5fd7a0f5e16e75a30a89ea2c4ab88612b8
    Patch