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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Oct 21, 2024 |
| Ubuntu | — | Upgrade linux-image-generic-64kUpgrade linux-image-6.11.0-1009-awsUpgrade linux-image-raspiUpgrade linux-image-6.11.0-1008-raspiUpgrade linux-image-6.11.0-1010-lowlatency-64kUpgrade linux-image-6.11.0-1009-azure-fdeUpgrade linux-image-oem-24.04Upgrade linux-image-genericUpgrade linux-image-lowlatency-64kUpgrade linux-image-realtimeUpgrade linux-image-6.11.0-18-generic-64kUpgrade linux-image-azureUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-azure-fdeUpgrade linux-image-6.11.0-1015-oemUpgrade linux-image-oem-24.04bUpgrade linux-image-6.11.0-18-genericUpgrade linux-image-6.11.0-1009-gcpUpgrade linux-image-oracle-64kUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-6.11.0-1009-azureUpgrade linux-image-gcpUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-oem-24.04aUpgrade linux-image-lowlatencyUpgrade linux-image-6.11.0-1011-oracleUpgrade linux-image-6.11.0-1005-realtimeUpgrade linux-image-awsUpgrade linux-image-virtualUpgrade linux-image-oracleUpgrade linux-image-6.11.0-1011-oracle-64kUpgrade linux-image-6.11.0-1010-lowlatency | Feb 20, 2025 | Oct 21, 2024 |
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