SB20260812247 - NULL pointer dereference in Linux kernel intel idpf driver

Description

This security bulletin contains information about 1 vulnerability.

1) NULL pointer dereference (CVE-ID: CVE-2026-68291)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local privileged user to cause a denial of service.

The vulnerability exists due to a null pointer dereference in the idpf driver core initialization and removal handling when allocation errors occur during initialization followed by reset or module removal. A local privileged user can trigger failed initialization and then reset or remove the module to cause a denial of service.

The issue occurs because max_vports is set before the related vports, netdevs, and vport_config buffers are successfully allocated.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/237f1f7653b8729169af11fae79f01b90d00b87e
• https://git.kernel.org/stable/c/9fbe22b7aff0a65984d78ee6b93e2f8179abd1f5