PT-2026-36390 · Linux · Linux Kernel

Published 2026-05-01 · Updated 2026-05-02 · CVE-2026-31755

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 NULL pointer dereference occurs in the cdns3 gadget ep queue() function when a gadget endpoint is disabled or not yet configured. In these states, the ep->desc pointer can be NULL, leading to a kernel crash when the function is called.

Recommendations Implement a check to return -ESHUTDOWN if ep->desc is NULL to ensure unconfigured endpoints are handled correctly. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2026-31755

ECHO-3125-FB95-27BA

Affected Products

Linux Kernel

References · 16

• https://cve.org/CVERecord?id=CVE-2026-31755 · Security Note
• https://git.kernel.org/stable/c/9ab9b0e5fcdac325f950fc8b6caa08a9e22a0db9 · Patch
• https://git.kernel.org/stable/c/7f6f127b9bc34bed35f56faf7ecb1561d6b39000 · Patch
• https://git.kernel.org/stable/c/390536cc6af4ca5566bc3bf1f8b704700380cd2c · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-31755 · Vendor Advisory
• https://git.kernel.org/stable/c/d61446dfc9d387775bb1b95b081953201b9222af · Patch
• https://git.kernel.org/stable/c/14bf08ab2cdfcdfd3f13e799d06692a1b3e0745f · Patch
• https://git.kernel.org/stable/c/3d1433fe34b224b90259e207e5389e95b504ef04 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31755 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-31755 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-31755 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31755 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31755 · Vendor Advisory
• https://git.kernel.org/stable/c/fb2ad0c1334a3eccfe4ed203f9eef5a4879226f6 · Patch
• https://docs.bell-sw.com/security/cves/CVE-2026-31755 · Note