SB2026081658 - Improper access control in Linux kernel octeontx2 af driver

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Main Vulnerability Database SB2026081658

SB2026081658 - Improper access control in Linux kernel octeontx2 af driver

Published: August 16, 2026

Security Bulletin ID SB2026081658
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper access control (CVE-ID: CVE-2026-72312)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a local user to disable the PF promiscuous and all-multicast receive rules.

The vulnerability exists due to improper access control in the nix_set_rx_mode mailbox handler when processing a VF interface request with promiscuous and all_multi flags set to false. A local user can bring up or tear down a VF interface to disable the PF promiscuous and all-multicast receive rules.

The issue occurs because the rule enable and disable APIs operate on the PF even when the mailbox request is issued through a VF interface.


Remediation

Install update from vendor's website.

References