PT-2026-39038 · Linux · Linux Kernel

Published 2026-05-08 · Updated 2026-05-26 · CVE-2026-43377

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description When KSMBD DEBUG AUTH logging is enabled, the functions generate smb3signingkey() and generate smb3encryptionkey() log session, signing, encryption, and decryption key bytes, which can lead to the exposure of credentials.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2026-43377

Affected Products

Linux Kernel

References · 18

• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43377 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-43377 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-43377 · Security Note
• https://git.kernel.org/stable/c/441336115df26b966575de56daf7107ed474faed · Patch
• https://git.kernel.org/stable/c/407cc37c21d51f9b9d4d20204b04890880cfa6ae · Patch
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2026-43377 · Vendor Advisory
• https://git.kernel.org/stable/c/3fe2d9ec166b7df9a8df6c0fdcfc210572e27e3f · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43377 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-43377 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43377 · Security Note
• https://git.kernel.org/stable/c/c6b01b997a2094969e315f1ebfc1d64b8ae2163d · Patch
• https://git.kernel.org/stable/c/fec5c70b82af3f59f15bb984df94e5ad1fccfb1e · Patch
• https://git.kernel.org/stable/c/4084ed720d7d5f4e975c9e4a6267a552dad3b24a · Patch
• https://ubuntu.com/security/CVE-2026-43377 · Vendor Advisory
• https://docs.bell-sw.com/security/cves/CVE-2026-43377 · Note