SB2026062939 - Improper input validation in Linux kernel pinctrl driver
Published: June 29, 2026
Security Bulletin ID
SB2026062939
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper input validation (CVE-ID: CVE-2026-53307)
CWE-ID: CWE-20 - Improper input validation
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 improper input validation in pinconf_generic_parse_dt_pinmux() when parsing the 'pinmux' property. A local user can provide an empty 'pinmux' property to cause a denial of service.
Remediation
Install update from vendor's website.