Vulnerability 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.14.200, < 4.15 |
References
- https://git.kernel.org/stable/c/139512191bd06f1b496117c76372b2ce372c9a41Patch
- https://git.kernel.org/stable/c/4583748b65dee4d61bd50a2214715b4237bc152aPatch
- https://git.kernel.org/stable/c/9b1766d1ff5fe496aabe9fc5f4e34e53f35c11c4Patch
- https://git.kernel.org/stable/c/a39f61d212d822b3062d7f70fa0588e50e55664ePatch
- https://git.kernel.org/stable/c/ce3c6165fce0f06305c806696882a3ad4b90e33fPatch
- https://git.kernel.org/stable/c/ea07480b23225942208f1b754fea1e7ec486d37ePatch
- https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
FAQ
What is CVE-2025-21766?
CVE-2025-21766 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 ...
How severe is CVE-2025-21766?
CVE-2025-21766 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-21766?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.