CVE•Published 2025-02-27•Modified 2026-10-15•1 article on news•7 live references•NVD data
CVE-2025-21765Linux · Linux_kernel
Vulnerability data via NVD (ingested)
CVSS v3.1
8.1
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
48
Exploit Prediction Scoring System · top 52% of all CVEs
Description
In the Linux kernel, the following vulnerability has been resolved: ipv6: use RCU protection in ip6_default_advmss() ip6_default_advmss() needs rcu protection to make sure the net structure it reads does not disappear.
Timeline
Published 2025-02-27
Modified 2026-10-15
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2025-21765Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · OS
os:"Linux Kernel"Hosts Shodan identified as running Linux Kernel.
More intel sources (5)
Shodan report
vuln:CVE-2025-21765Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2025-21765Censys host search filtered to this CVE id.
grep.app
CVE-2025-21765Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2025-21765GitHub code search for direct mentions.
Google dork
"CVE-2025-21765" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2025-21765 on GitHub.