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CVE-2025-21766

ipv4: use RCU protection in __ip_rt_update_pmtu()

EPSS 0.2%
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.
Affected products
Linux · Linux

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References
https://cert-portal.siemens.com/productcert/html/ssa-082556.htmlhttps://git.kernel.org/stable/c/139512191bd06f1b496117c76372b2ce372c9a41https://git.kernel.org/stable/c/4583748b65dee4d61bd50a2214715b4237bc152ahttps://git.kernel.org/stable/c/9b1766d1ff5fe496aabe9fc5f4e34e53f35c11c4https://git.kernel.org/stable/c/a39f61d212d822b3062d7f70fa0588e50e55664ehttps://git.kernel.org/stable/c/ce3c6165fce0f06305c806696882a3ad4b90e33fhttps://git.kernel.org/stable/c/ea07480b23225942208f1b754fea1e7ec486d37ehttps://lists.debian.org/debian-lts-announce/2025/03/msg00028.html