HighFix available
ipv4: use RCU protection in __ip_rt_update_pmtu()
Type: advisorySources: OSV
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.15.179, 6.1.129, 6.12.16, 6.13.4, 6.6.79
- CVEs
- CVE-2025-21766
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 5 Nov 2026, 05:27 UTC · Revision 1
Source evidence
ipv4: use RCU protection in __ip_rt_update_pmtu()
core-osv · Original sourcePublished 27 Feb 2025, 02:18 UTC
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.
osv:CVE-2025-21766
Kernel
Fixed versions: 5.15.179, 6.1.129, 6.6.79, 6.12.16, 6.13.4
Complete source record
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"title": "ipv4: use RCU protection in __ip_rt_update_pmtu()",
"summary": "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.",
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"https://cert-portal.siemens.com/productcert/html/ssa-784472.html",
"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",
"https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21766.json",
"https://nvd.nist.gov/vuln/detail/CVE-2025-21766",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21766.json"
}
},
"related_cves": [
{
"value": "CVE-2025-21766",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 510710,
"published_at": "2025-02-27T02:18:16.57+00:00"
}