CVE-2026-43464

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the net/mlx5e component regarding XDP multi-buf fragment counting for legacy RQ. XDP multi-buf programs can modify the XDP buffer layout when calling bpf xdp pull data() or bpf xdp adjust tail(). A previous fix failed to properly count dropped fragments on the driver side, leading to page fragment reference counting errors. This can result in a negative pp ref count during page release, potentially causing a system warning or crash during operations such as changing the MTU.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.