SB20260528181 - Double free in Linux kernel hisilicon hns3 driver

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Main Vulnerability Database SB20260528181

SB20260528181 - Double free in Linux kernel hisilicon hns3 driver

Published: May 28, 2026

Security Bulletin ID SB20260528181
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) Double free (CVE-ID: CVE-2026-45891)

CWE-ID: CWE-415 - Double 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 double free in hns3_set_ringparam() and the ring cleanup path when handling ring reconfiguration after a memory allocation failure. A local user can trigger ring parameter changes that lead to a failed ring initialization to cause a denial of service.

The issue is caused by a stale dangling pointer in the tx_spare field that is mistaken for a newly allocated buffer during error cleanup.


Remediation

Install update from vendor's website.

References