PT-2026-39036 · Linux · Linux Kernel

Published 2026-05-08 · Updated 2026-05-15 · CVE-2026-43375

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 device leak occurs in the net: mctp component during probe failure. The driver takes a reference to the USB device during the probe process but fails to release it when the probe fails. This happens because the driver core already maintains a reference to the USB interface and its parent USB device while the interface is bound to a driver, making the additional reference redundant.

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

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

CVE-2026-43375

Affected Products

Linux Kernel

References · 12

• https://git.kernel.org/stable/c/3224990fb16a831aabc50b67c74f5d0074ce80dd · Patch
• https://ubuntu.com/security/CVE-2026-43375 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43375 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43375 · Vendor Advisory
• https://git.kernel.org/stable/c/ec9538f9b5cd1db5e8c612aa636b6119b6355c5d · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-43375 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43375 · Vendor Advisory
• https://git.kernel.org/stable/c/224a0d284c3caf1951302d1744a714784febed71 · Patch
• https://cve.org/CVERecord?id=CVE-2026-43375 · Security Note
• https://twitter.com/CVEnew/status/2052810995475652637 · Twitter Post
• https://git.kernel.org/linus/224a0d284c3caf1951302d1744a714784febed71 · Note
• https://twitter.com/hetmehtaa/status/2055151398283837677 · Twitter Post