SB20260816420 - Improper input validation in Linux kernel can

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Main Vulnerability Database SB20260816420

SB20260816420 - Improper input validation in Linux kernel can

Published: August 16, 2026

Security Bulletin ID SB20260816420
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) Improper input validation (CVE-ID: CVE-2026-72114)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 6.8 [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]


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

The vulnerability exists due to improper input validation in bcm_rx_setup() in the CAN BCM subsystem when processing RX_SETUP messages with RX_RTR_FRAME. A local user can supply a crafted RTR-reply frame with an invalid length to cause a denial of service.

The issue affects RTR replies configured through RX_SETUP and involves validation of CAN and CAN FD frame length limits.


Remediation

Install update from vendor's website.

References