SB20260827133 - NULL pointer dereference in Linux kernel wangxun ngbe driver
Published: August 27, 2026
Security Bulletin ID
SB20260827133
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2026-74741)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to a null pointer dereference in the ngbe interrupt enabling logic when enabling interrupts in non-msi-x mode. A remote attacker can trigger the vulnerable code path to cause a denial of service.
The issue occurs in legacy INTx or single MSI configurations where the msix_entry structure is not allocated or initialized.
Remediation
Install update from vendor's website.