SB20260815150 - Out-of-bounds write in Linux kernel intel ixgbe driver

Description

This security bulletin contains information about 1 vulnerability.

1) Out-of-bounds write (CVE-ID: CVE-2026-74317)

CWE-ID: CWE-787 - Out-of-bounds write

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 slab out-of-bounds write in __netif_set_xps_queue in the ixgbe driver when loading an XDP program that configures XDP transmit queues. A local user can load an XDP program to trigger the out-of-bounds write and cause a denial of service.

The issue occurs on E610 adapters on systems with 64 or more CPUs when the last XDP queue is configured.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/7bd4355272de34c2e90e34b72c5613736d03c32b
• https://git.kernel.org/stable/c/a2a224f5e344ccb1ec3693a0735822db9214e2ca