CVE•Published 2025-01-21•Modified 2026-07-30•1 article on news•6 live references•NVD data
CVE-2025-21659Linux · Linux_kernel
Vulnerability data via NVD (ingested)
CVSS v3.1
8.1
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H
EPSS percentile
7
Exploit Prediction Scoring System · top 93% of all CVEs
Description
In the Linux kernel, the following vulnerability has been resolved: netdev: prevent accessing NAPI instances from another namespace The NAPI IDs were not fully exposed to user space prior to the netlink API, so they were never namespaced. The netlink API must ensure that at the very least NAPI instance belongs to the same netns as the owner of the genl sock. napi_by_id() can become static now, but it needs to move because of dev_get_by_napi_id().
Timeline
Published 2025-01-21
Modified 2026-07-30
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-2025-21659Hosts 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-2025-21659Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2025-21659Censys host search filtered to this CVE id.
grep.app
CVE-2025-21659Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2025-21659GitHub code search for direct mentions.
Google dork
"CVE-2025-21659" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub (3)
CVE-2025-216593 repos
Xuchen-Li/cv-arxiv-dailyPython
Automatically update arXiv papers about SOT & VLT, Multi-modal Learning, LLM and Video Understanding using Github Actions.
XuzhaoLi/ro-arxiv-dailyPython
Automatically Update Arxiv Papers about Path Planning, LLM and Autonomous Driving using Github Actions since 2024.2.
cnlinxi/LLM-paper-dailyPython
Automatically Update LLM Papers Daily using Github Actions. Ref: https://github.com/Vincentqyw/cv-arxiv-daily