In the Linux kernel, the following vulnerability has been resolved:
netkit: Assign missing bpfnetcontext
During the introduction of struct bpfnetcontext handling for XDP-redirect, the netkit driver has been missed, which also requires it because NETKITREDIRECT invokes skbdo_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 bpfnetcontext before invoking netkit_xmit() program within the netkit driver.
{
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/47xxx/CVE-2024-47708.json"
}