SB20261022422 - NULL pointer dereference in Linux kernel octeontx2 nic driver

Description

This security bulletin contains information about 1 vulnerability.

1) NULL pointer dereference (CVE-ID: CVE-2026-98806)

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 potentially cause a kernel crash and denial of service.

The vulnerability exists due to a null pointer dereference in the Linux kernel octeontx2 network driver when assigning backpressure identifiers for SDP virtual functions with CONFIG_DCB enabled. A local user can trigger an affected initialization path that dereferences the uninitialized queue_to_pfc_map pointer to potentially cause a kernel crash and denial of service.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/056994563935e049093f100efaad7e63ad113814
• https://git.kernel.org/stable/c/59fbbded05e559675930fd521b8d62b72828b52d