CVE-2025-39682
Linux Kernel Improper Check for Unusual or Exceptional Conditions Vulnerability
Summary
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.
Affected software
Vendor: Linux · Product: Kernel
Weakness types (CWE):
What to do
This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.
Related vulnerabilities in Linux
| CVE | Name | EPSS | Exploited |
|---|---|---|---|
| CVE-2026-31431 | Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability | 98.1% | Yes |
| CVE-2022-0847 | Linux Kernel Privilege Escalation Vulnerability | 92.8% | Yes |
| CVE-2016-5195 | Linux Kernel Race Condition Vulnerability | 83.5% | Yes |
| CVE-2021-22555 | Linux Kernel Heap Out-of-Bounds Write Vulnerability | 78.7% | Yes |
| CVE-2019-13272 | Linux Kernel Improper Privilege Management Vulnerability | 52.2% | Yes |
| CVE-2021-3493 | Linux Kernel Privilege Escalation Vulnerability | 49.2% | Yes |
| CVE-2013-2094 | Linux Kernel Privilege Escalation Vulnerability | 47.7% | Yes |
| CVE-2013-6282 | Linux Kernel Improper Input Validation Vulnerability | 39.7% | Yes |
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