PT-2026-43923 · Linux · Linux Kernel

Published 2026-05-27 · Updated 2026-06-04 · CVE-2026-46056

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:A/AC:L/PR:N/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 A use-after-free issue exists in the Bluetooth component of the Linux kernel within the SSP passkey handlers. The hci conn lookup and field access in the hci user passkey notify evt() and hci keypress notify evt() functions are not properly protected by the hdev lock, which can allow the connection to be freed concurrently while in use.

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

Related Identifiers

CVE-2026-46056

ECHO-8EB5-B966-95E0

OPENSUSE-SU-2026:10954-1

Affected Products

Linux Kernel

References · 291

• https://osv.dev/vulnerability/openSUSE-SU-2026:10954-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-46056 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-46056 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-46056 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-46056 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-46056 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-46056 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-46056 · Vendor Advisory
• https://suse.com/security/cve/CVE-2026-46065 · Note
• https://suse.com/security/cve/CVE-2026-46216 · Note
• https://suse.com/security/cve/CVE-2026-46013 · Note
• https://suse.com/security/cve/CVE-2026-46009 · Note
• https://suse.com/security/cve/CVE-2026-45837 · Note
• https://suse.com/security/cve/CVE-2026-46164 · Note
• https://suse.com/security/cve/CVE-2026-46077 · Note