SB2026062572 - Use of Uninitialized Variable in Linux kernel net hamradio driver

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Main Vulnerability Database SB2026062572

SB2026062572 - Use of Uninitialized Variable in Linux kernel net hamradio driver

Published: June 25, 2026

Security Bulletin ID SB2026062572
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Use of Uninitialized Variable (CVE-ID: CVE-2026-53082)

CWE-ID: CWE-457 - Use of Uninitialized Variable

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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 an uninitialized value read in sixpack_receive_buf() and sixpack_decode() in the 6pack hamradio driver when processing TTY input with error-flagged bytes. A local user can supply crafted input containing TTY error conditions to cause a denial of service.

The issue occurs because bytes marked with TTY error flags are not skipped correctly before decoding.


Remediation

Install update from vendor's website.

References