SB20260815200 - Double free in Linux kernel broadcom bnxt driver
Published: August 15, 2026
Security Bulletin ID
SB20260815200
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) Double free (CVE-ID: CVE-2026-74269)
CWE-ID: CWE-415 - Double Free
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 a double free in the bnxt driver receive path in bnxt_rx_multi_page_skb when processing XDP head-grow adjustments. A local user can trigger crafted XDP head adjustment behavior to cause a denial of service.
The issue occurs because a head underflow can corrupt page pool fragment reference counts, causing a page to be prematurely recycled while still in use.
Remediation
Install update from vendor's website.