CVE-2025-21761

HIGH EPSS 13.3%
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: openvswitch: use RCU protection in ovs_vport_cmd_fill_info() ovs_vport_cmd_fill_info() can be called without RTNL or RCU. Use RCU protection and dev_net_rcu() 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
13.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 9

VendorProductVersionRange
linuxlinux_kernel*≥4.15  –  <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 11

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-265688.html
  • git.kernel.org https://git.kernel.org/stable/c/5828937742af74666192835d657095d95c53dbd0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7e01abc34e87abd091e619161a20f54ed4e3e2da
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8ec57509c36c8b9a23e50b7858dda0c520a2d074
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/90b2f49a502fa71090d9f4fe29a2f51fe5dff76d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a849a10de5e04d798f7f286a2f1ca174719a617a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a8816b3f1f151373fd30f1996f00480126c8bb11
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a884f57600e463f69d7b279c4598b865260b62a1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e85a25d1a9985645e796039e843d1de581d2de1e
    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/5828937742af74666192835d657095d95c53dbd0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7e01abc34e87abd091e619161a20f54ed4e3e2da
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8ec57509c36c8b9a23e50b7858dda0c520a2d074
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/90b2f49a502fa71090d9f4fe29a2f51fe5dff76d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a849a10de5e04d798f7f286a2f1ca174719a617a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a8816b3f1f151373fd30f1996f00480126c8bb11
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a884f57600e463f69d7b279c4598b865260b62a1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e85a25d1a9985645e796039e843d1de581d2de1e
    Patch