PT-2026-34895 · Linux · Linux Kernel

Published 2026-04-24 · Updated 2026-05-15 · CVE-2026-31543

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

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

Description When debug logging is enabled, the read key from user keying() function logs the first 8 bytes of the key payload, which partially exposes the dm-crypt key.

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

Related Identifiers

CVE-2026-31543

Affected Products

Linux Kernel

References · 13

• https://security-tracker.debian.org/tracker/CVE-2026-31543 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31543 · Vendor Advisory
• https://git.kernel.org/stable/c/36f46b0e36892eba08978eef7502ff3c94ddba77 · Patch
• https://cve.org/CVERecord?id=CVE-2026-31543 · Security Note
• https://git.kernel.org/stable/c/4897bd307ba8757c31a3325ba6730961be606016 · Patch
• https://git.kernel.org/stable/c/ed8d91f469845d62d44c565a55d2ab1767969357 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-31543 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31543 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31543 · Vendor Advisory
• https://twitter.com/LimitlessHosts/status/2055333931734470752 · Twitter Post
• https://twitter.com/infoflowcloud/status/2047799390014669141 · Twitter Post
• https://twitter.com/CVEnew/status/2047798642002846008 · Twitter Post
• https://git.kernel.org/linus/36f46b0e36892eba08978eef7502ff3c94ddba77 · Note