CVE-2025-38735

MEDIUM EPSS 4.3%
Published Sep 5, 20259mo ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Sep 5, 2025 9mo ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: gve: prevent ethtool ops after shutdown A crash can occur if an ethtool operation is invoked after shutdown() is called. shutdown() is invoked during system shutdown to stop DMA operations without performing expensive deallocations. It is discouraged to unregister the netdev in this path, so the device may still be visible to userspace and kernel helpers. In gve, shutdown() tears down most internal data structures. If an ethtool operation is dispatched after shutdown(), it will dereference freed or NULL pointers, leading to a kernel panic. While graceful shutdown normally quiesces userspace before invoking the reboot syscall, forced shutdowns (as observed on GCP VMs) can still trigger this path. Fix by calling netif_device_detach() in shutdown(). This marks the device as detached so the ethtool ioctl handler will skip dispatching operations to the driver.

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
4.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 7

VendorProductVersionRange
linuxlinux_kernel*≥5.17  –  <6.1.149
linuxlinux_kernel*≥6.2  –  <6.6.103
linuxlinux_kernel*≥6.7  –  <6.12.44
linuxlinux_kernel*≥6.13  –  <6.16.4
linuxlinux_kernel6.17any
linuxlinux_kernel6.17any
debiandebian_linux11.0any

References 7

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-032379.html
  • git.kernel.org https://git.kernel.org/stable/c/48a4e89d50e8ea52e800bc7865970b92fcf4647c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/75a9a46d67f46d608205888f9b34e315c1786345
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9d8a41e9a4ff83ff666de811e7f012167cdc00e9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a7efffeecb881b4649fdc30de020ef910f35d646
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ba51d73408edf815cbaeab148625576c2dd90192
    Patch
  • 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/48a4e89d50e8ea52e800bc7865970b92fcf4647c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/75a9a46d67f46d608205888f9b34e315c1786345
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9d8a41e9a4ff83ff666de811e7f012167cdc00e9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a7efffeecb881b4649fdc30de020ef910f35d646
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ba51d73408edf815cbaeab148625576c2dd90192
    Patch