CVE-2024-47708 netkit: Assign missing bpf_net_context

What is CVE-2024-47708?

CVE-2024-47708 is a medium-severity vulnerability in Linux kernel, published on 21 Oct 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

netkit: Assign missing bpf_net_context

During the introduction of struct bpf_net_context handling for XDP-redirect, the netkit driver has been missed, which also requires it because NETKIT_REDIRECT invokes skb_do_redirect() which is accessing the per-CPU variables. Otherwise we see the following crash:

BUG: kernel NULL pointer dereference, address: 0000000000000038 bpf_redirect() netkit_xmit() dev_hard_start_xmit()

Set the bpf_net_context before invoking netkit_xmit() program within the netkit driver.

Weakness: CWE-476

Which versions are affected by CVE-2024-47708?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-47708?

Apply the vendor's patch.

Is CVE-2024-47708 being exploited?

There is no known exploitation of CVE-2024-47708 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2024-47708, GHSA-mcrm-9h74-fxh7, UBUNTU-CVE-2024-47708.