UBUNTU-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.
02 / AFFECTED SOFTWARE
Affected packages
25 explicit affected versions
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25 explicit affected versions
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5 explicit affected versions
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12 explicit affected versions
23 explicit affected versions
19 explicit affected versions
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10 explicit affected versions
37 explicit affected versions
5 explicit affected versions
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26 explicit affected versions
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14 explicit affected versions
29 explicit affected versions
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13 explicit affected versions
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25 explicit affected versions
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1 explicit affected versions
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5 explicit affected versions
3 explicit affected versions
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10 explicit affected versions
4 explicit affected versions
27 explicit affected versions
13 explicit affected versions
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13 explicit affected versions
72 explicit affected versions
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140 explicit affected versions
3 explicit affected versions
94 explicit affected versions
57 explicit affected versions
10 explicit affected versions
12 explicit affected versions
15 explicit affected versions
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44 explicit affected versions
16 explicit affected versions
32 explicit affected versions
14 explicit affected versions
38 explicit affected versions
167 explicit affected versions
9 explicit affected versions
55 explicit affected versions
11 explicit affected versions
21 explicit affected versions
7 explicit affected versions
66 explicit affected versions
35 explicit affected versions
121 explicit affected versions
4 explicit affected versions
1 explicit affected versions
1 explicit affected versions
1 explicit affected versions
64 explicit affected versions
56 explicit affected versions
13 explicit affected versions
43 explicit affected versions
21 explicit affected versions
77 explicit affected versions
119 explicit affected versions
10 explicit affected versions
8 explicit affected versions
26 explicit affected versions
88 explicit affected versions
14 explicit affected versions
4 explicit affected versions
78 explicit affected versions
11 explicit affected versions
1 explicit affected versions
69 explicit affected versions
123 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/139512191bd06f1b496117c76372b2ce372c9a41
- 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
- https://ubuntu.com/security/CVE-2025-21766
- https://ubuntu.com/security/notices/USN-7510-1
- https://ubuntu.com/security/notices/USN-7510-2
- https://ubuntu.com/security/notices/USN-7510-3
- https://ubuntu.com/security/notices/USN-7510-4
- https://ubuntu.com/security/notices/USN-7510-5
- https://ubuntu.com/security/notices/USN-7510-6
- https://ubuntu.com/security/notices/USN-7510-7
- https://ubuntu.com/security/notices/USN-7510-8
- https://ubuntu.com/security/notices/USN-7511-1
- https://ubuntu.com/security/notices/USN-7511-2
- https://ubuntu.com/security/notices/USN-7511-3
- https://ubuntu.com/security/notices/USN-7512-1
- https://ubuntu.com/security/notices/USN-7521-1
- https://ubuntu.com/security/notices/USN-7521-2
- https://ubuntu.com/security/notices/USN-7521-3
- https://ubuntu.com/security/notices/USN-7593-1
- https://ubuntu.com/security/notices/USN-7602-1
- https://ubuntu.com/security/notices/USN-7703-1
- https://ubuntu.com/security/notices/USN-7703-2
- https://ubuntu.com/security/notices/USN-7703-3
- https://ubuntu.com/security/notices/USN-7703-4
- https://ubuntu.com/security/notices/USN-7719-1
- https://ubuntu.com/security/notices/USN-7737-1
- https://www.cve.org/CVERecord?id=CVE-2025-21766