Linux Kernel Improper Check for Unusual or Exceptional Conditions Vulnerability

Exploited in the wild. Listed by CISA on 2026-09-18; known to be used by ransomware.

3.3%likelihood of exploitation, next 30 days

89%of all CVEs are less likely

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Linux Kernel contains an improper check for unusual or exceptional conditions vulnerability in the TLS receive path which allows a zero-length record retrieved from the rx_list to bypass the intended recvmsg() record-type handling, potentially causing subsequent TLS records to be processed using incorrect zero-copy and queuing assumptions. The impacted product(s) could be end-of-life (EoL) and/or end-of-service (EoS). Users are advised to discontinue use and/or transition to a supported version.

No ready check is stored for this CVE. Confirm it by hand from the references.

References

https://nvd.nist.gov/vuln/detail/CVE-2025-39682

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