CVE•Published 2025-02-26•Modified 2026-08-04•1 article on news•5 live references•NVD data
CVE-2022-49561Linux · Linux_kernel
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
21
Exploit Prediction Scoring System · top 79% of all CVEs
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: re-fetch conntrack after insertion In case the conntrack is clashing, insertion can free skb->_nfct and set skb->_nfct to the already-confirmed entry. This wasn't found before because the conntrack entry and the extension space used to free'd after an rcu grace period, plus the race needs events enabled to trigger.
Timeline
Published 2025-02-26
Modified 2026-08-04
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). Live host counts are a Premium feature.
Shodan · vuln tag
vuln:CVE-2022-49561Hosts 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-2022-49561Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2022-49561Censys host search filtered to this CVE id.
grep.app
CVE-2022-49561Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2022-49561GitHub code search for direct mentions.
Google dork
"CVE-2022-49561" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2022-49561 on GitHub.