CVE-2025-21766

MEDIUM EPSS 9.0%
Published Feb 27, 20251y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
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: ipv4: use RCU protection in __ip_rt_update_pmtu() __ip_rt_update_pmtu() must use RCU protection to make sure the net structure it reads does not disappear.

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
9.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 14

VendorProductVersionRange
linuxlinux_kernel*≥4.14.200  –  <4.15
linuxlinux_kernel*≥4.19.148  –  <4.20
linuxlinux_kernel*≥5.4.68  –  <5.5
linuxlinux_kernel*≥5.8.12  –  <5.9
linuxlinux_kernel*≥5.9.1  –  <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_kernel5.9any
linuxlinux_kernel5.9any
linuxlinux_kernel5.9any
linuxlinux_kernel6.14any
linuxlinux_kernel6.14any

References 8

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-082556.html
  • git.kernel.org https://git.kernel.org/stable/c/139512191bd06f1b496117c76372b2ce372c9a41
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4583748b65dee4d61bd50a2214715b4237bc152a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9b1766d1ff5fe496aabe9fc5f4e34e53f35c11c4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a39f61d212d822b3062d7f70fa0588e50e55664e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ce3c6165fce0f06305c806696882a3ad4b90e33f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ea07480b23225942208f1b754fea1e7ec486d37e
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/139512191bd06f1b496117c76372b2ce372c9a41
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4583748b65dee4d61bd50a2214715b4237bc152a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9b1766d1ff5fe496aabe9fc5f4e34e53f35c11c4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a39f61d212d822b3062d7f70fa0588e50e55664e
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ce3c6165fce0f06305c806696882a3ad4b90e33f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ea07480b23225942208f1b754fea1e7ec486d37e
    Patch