CVE-2025-21766 Information

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.

Reference

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