CVE-2025-21762

HIGH EPSS 13.5%
Published Feb 27, 20251y ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Feb 27, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: arp: use RCU protection in arp_xmit() arp_xmit() can be called without RTNL or RCU protection. Use RCU protection to avoid potential UAF.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
13.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 9

VendorProductVersionRange
linuxlinux_kernel*≥4.4  –  <5.4.291
linuxlinux_kernel*≥5.5  –  <5.10.235
linuxlinux_kernel*≥5.11  –  <5.15.179
linuxlinux_kernel*≥5.16  –  <6.1.129
linuxlinux_kernel*≥6.2  –  <6.6.79
linuxlinux_kernel*≥6.7  –  <6.12.16
linuxlinux_kernel*≥6.13  –  <6.13.4
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any

References 12

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-265688.html
  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-503939.html
  • git.kernel.org https://git.kernel.org/stable/c/01d1b5c9abcaff29a43f1d17a19c33eec92c7dbe
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/10f555e3f573d004ae9d89b3276abb58c4ede5c3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2c331718d3389b6c5f6855078ab7171849e016bd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/307cd1e2d3cb1cbc6c40c679cada6d7168b18431
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a42b69f692165ec39db42d595f4f65a4c8f42e44
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d9366ac2f956a1948b68c0500f84a3462ff2ed8a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e9f4dee534eb1b225b0a120395ad9bc2afe164d3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f189654459423d4d48bef2d120b4bfba559e6039
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/01d1b5c9abcaff29a43f1d17a19c33eec92c7dbe
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/10f555e3f573d004ae9d89b3276abb58c4ede5c3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2c331718d3389b6c5f6855078ab7171849e016bd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/307cd1e2d3cb1cbc6c40c679cada6d7168b18431
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a42b69f692165ec39db42d595f4f65a4c8f42e44
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d9366ac2f956a1948b68c0500f84a3462ff2ed8a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e9f4dee534eb1b225b0a120395ad9bc2afe164d3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f189654459423d4d48bef2d120b4bfba559e6039
    Patch