CVE-2023-6200: kernel · Race Condition
Affects kernelSource CVE Database V5
Not known to be exploited · CVSS 7.5 High.
Data as of 26 Oct 2026, 06:26 UTC
- EPSS
- 2.0% chance of exploitation in 30 days – higher than 80% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 28 Jan 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.
What to do
AI-suggested
1. Immediate mitigation should include applying any available kernel patches from Linux distributions as soon as they are released. Monitor vendor advisories closely for updates. 2. Network segmentation should be enforced to limit access to IPv6 local network segments, restricting ICMPv6 router advertisement traffic to trusted devices only. 3. Deploy IPv6 firewall rules to filter or rate-limit ICMPv6 router advertisement packets, reducing exposure to crafted malicious packets. 4. Disable IPv6 router advertisement acceptance on hosts and devices where it is not required, or use secure neighbor discovery (SEND) mechanisms if supported. 5. Employ network intrusion detection/prevention systems (IDS/IPS) capable of detecting anomalous ICMPv6 traffic patterns. 6. Conduct internal network audits to identify systems running vulnerable kernel versions and prioritize patching those with critical roles. 7. For cloud or virtualized environments, ensure virtual networks are properly isolated to prevent adjacent network attacks. 8. Educate network administrators about the risks of ICMPv6-based attacks and best practices for IPv6 security hardening.
Description
A race condition was found in the Linux Kernel. Under certain conditions, an unauthenticated attacker from an adjacent network could send an ICMPv6 router advertisement packet, causing arbitrary code execution.