NULL pointer dereference in Linux kernel - CVE-2026-74741
Published: August 27, 2026
Vulnerability identifier: #VU145987
CSH Severity: Medium
CVSS v4: 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]
CVE-ID: CVE-2026-74741
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Linux kernel
How to mitigate CVE-2026-74741
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3