SB20260815181 - NULL pointer dereference in Linux kernel net driver

Description

This security bulletin contains information about 1 vulnerability.

1) NULL pointer dereference (CVE-ID: CVE-2026-74286)

CWE-ID: CWE-476 - NULL Pointer Dereference

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 NULL pointer dereference in the PFCP netdev statistics handler when creating a PFCP rtnetlink device and requesting netdev statistics. A local user can create a PFCP rtnetlink device to trigger the NULL pointer dereference and cause a denial of service.

The issue can be triggered immediately while building the RTM_NEWLINK notification for a newly created device.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/24041543da8cd84eb5d8ae738c534372fff54820
• https://git.kernel.org/stable/c/51a1d9836acc76a1bd16170b2f4b35f11036593f
• https://git.kernel.org/stable/c/56b4ad500fd1282ef04db3c4beae5b54ab093a53
• https://git.kernel.org/stable/c/67e4b283de36d9eebf95acdea5d6674b6ef4b2f4