PT-2026-30172 · Linux · Linux Kernel

Published 2026-04-03 · Updated 2026-05-30 · CVE-2026-31389

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

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

Description The Linux kernel contained a flaw where a use-after-free condition could occur during controller registration failure in the SPI subsystem. Specifically, if per-CPU statistics allocation failed during controller registration, the driver resources were not properly deregistered from the driver core, leading to a use-after-free and potential unclocked register accesses.

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

LPE

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2026-31389

ECHO-CFC1-77CB-A838

OESA-2026-2172

OESA-2026-2173

OESA-2026-2176

Affected Products

Linux Kernel

References · 46

• https://nvd.nist.gov/vuln/detail/CVE-2026-23449 · Security Note
• https://git.kernel.org/stable/c/afe27c1f43aa57530011f419be6ddf71306565d2 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-23442 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-27558 · Security Note
• https://ubuntu.com/security/CVE-2026-31389 · Vendor Advisory
• https://git.kernel.org/stable/c/8634e05b08ead636e926022f4a98416e13440df9 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-23457 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-23447 · Security Note
• https://osv.dev/vulnerability/OESA-2026-2172 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-31428 · Security Note
• https://osv.dev/vulnerability/OESA-2026-2173 · Vendor Advisory
• https://git.kernel.org/stable/c/0e23f50086da7d0b183dfeac26021acfcdee086b · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-31389 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-31431 · Security Note
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2404-CVE-2026-31389 · Vendor Advisory