CVE-2025-21766

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
UNKNOWN
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LinuxCNA
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Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 10%
Debian logo
Debian Releases
Debian Product
Codename
linux
bullseye
vulnerable
bullseye (security)
vulnerable
bookworm
6.1.129-1
fixed
bookworm (security)
vulnerable
trixie
6.12.20-1
fixed
sid
6.12.21-1
fixed
linux-6.1
bullseye (security)
6.1.129-1~deb11u1
fixed
Vulnerability Media Exposure
References
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/ce3c6165fce0f06305c806696882a3ad4b90e33f
https://git.kernel.org/stable/c/ea07480b23225942208f1b754fea1e7ec486d37e