Vulnerability in Linux

CVE-2026-43377

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Don't log keys in SMB3 signing and encryption key generation When KSMBD_DEBUG_AUTH logging is enabled, generate_smb3signingkey() and generate_smb3encryptionkey() log the session, signing, encryption, and decryption key bytes. Remove the logs to avoid exposing credentials.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (24.3th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 24.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-43377: held from 0.002 to 0.003.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

  • Linux — versions e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9, 5.15, 0
  • Linux Kernel — versions 7.0

References

Frequently asked questions

What is CVE-2026-43377?
CVE-2026-43377 is a high-severity vulnerability in Linux. CVSS score: 8.1/10. Published 2026-05-08.
How severe is CVE-2026-43377?
High severity. CVSS v3 base score is 8.1 out of 10.