PT-2026-30174 · Linux · Linux Kernel

Published 2026-04-03 · Updated 2026-05-26 · CVE-2026-31391

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 A memory management issue was addressed in the Linux kernel related to the atmel-sha204a cryptographic module. Specifically, a potential leak of the tfm count variable could occur if memory allocation failed. Decrementing ->tfm count when memory allocation fails prevents blocking future reads.

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

Related Identifiers

CVE-2026-31391

ECHO-5D74-6720-4641

Affected Products

Linux Kernel

References · 20

• https://nvd.nist.gov/vuln/detail/CVE-2026-31391 · Security Note
• https://git.kernel.org/stable/c/2bfc83cee05f8b9604502df27d94e8e2b4a3dbf1 · Patch
• https://ubuntu.com/security/CVE-2026-31391 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2026-31391 · Vendor Advisory
• https://git.kernel.org/stable/c/fd262dc6d758232511127372eba866b7600739ba · Patch
• https://git.kernel.org/stable/c/c2d0c45dbb9eb272385ae919b17eef5a5318d3f8 · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-31391 · Vendor Advisory
• https://git.kernel.org/stable/c/66ee9c1c3575b5d6afc340faca00fd40ed5b7ad9 · Patch
• https://git.kernel.org/stable/c/6f502049a96b368ea6646c49d9520d6f69a101fa · Patch
• https://git.kernel.org/stable/c/d240b079a37e90af03fd7dfec94930eb6c83936e · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31391 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-31391 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31391 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-31391 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2404-CVE-2026-31391 · Vendor Advisory