SB2026060413 - Use-after-free in Linux kernel nfc hci

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2026060413

SB2026060413 - Use-after-free in Linux kernel nfc hci

Published: June 4, 2026

Security Bulletin ID SB2026060413
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Use-after-free (CVE-ID: CVE-2026-46267)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a use-after-free in llc_shdlc_deinit and SHDLC state machine work handling when tearing down the SHDLC context while timers or queued work remain active. A local user can trigger concurrent teardown and work execution to cause a denial of service.

The issue involves shutdown races where timer callbacks can schedule sm_work that accesses SHDLC state and skb queues after the context is freed.


Remediation

Install update from vendor's website.

References