Vulnerability in Linux

CVE-2025-40019

In the Linux kernel, the following vulnerability has been resolved: crypto: essiv - Check ssize for decryption and in-place encryption Move the ssize check to the start in essiv_aead_crypt so that it's also checked for decryption and in-place encryption.

EPSS: 0.003 (19.3th percentile) — read the EPSS interpretation.

Affected products

  • Linux — versions be1eb7f78aa8fbe34779c56c266ccd0364604e71, 5.4, 0

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-40019?
CVE-2025-40019 is a vulnerability in Linux. Published 2025-10-24.
Is CVE-2025-40019 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.