PT-2026-34392 · Linux · Linux Kernel

Published 2026-04-22 · Updated 2026-04-23 · CVE-2026-31487

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 Use-After-Free (UAF) issue exists in the SPI subsystem. When a driver is probed via the driver attach() function, the bus match() callback is executed without holding the device lock. This leads to the driver override field being accessed without proper synchronization.

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

Improper Locking

Weakness Enumeration

CWE-667

Related Identifiers

CVE-2026-31487

ECHO-FD0E-D935-7B1C

Affected Products

Linux Kernel

References · 16

• https://security-tracker.debian.org/tracker/CVE-2026-31487 · Vendor Advisory
• https://git.kernel.org/stable/c/c73a58661a760373d08a6883af4f0bb5cc991a67 · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-31487 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-31487 · Security Note
• https://git.kernel.org/stable/c/cc34d77dd48708d810c12bfd6f5bf03304f6c824 · Patch
• https://ubuntu.com/security/CVE-2026-31487 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-31487 · Security Note
• https://git.kernel.org/stable/c/eedf220442d13b6d97294e5b0ac8a2c38ee1a1a0 · Patch
• https://git.kernel.org/stable/c/e0ae367a2de06c49aa1de6ec9b1ab6860bbb2cf0 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31487 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31487 · Vendor Advisory
• https://twitter.com/windowsforum/status/2047227352153813218 · Twitter Post
• https://twitter.com/CVEnew/status/2046979993335464360 · Twitter Post
• https://twitter.com/windowsforum/status/2047227266891915385 · Twitter Post
• https://git.kernel.org/linus/cc34d77dd48708d810c12bfd6f5bf03304f6c824 · Note