In the Linux kernel, the following vulnerability has been resolved:
veth: Ensure eth header is in skb's linear part
After feeding a decapsulated packet to a veth device with act_mirred, skb_headlen() may be 0. But veth_xmit() calls __dev_forward_skb(), which expects at least ETH_HLEN byte of linear data (as __dev_forward_skb2() calls eth_type_trans(), which pulls ETH_HLEN bytes unconditionally).
Use pskb_may_pull() to ensure veth_xmit() respects this constraint.
kernel BUG at include/linux/skbuff.h:2328! RIP: 0010:eth_type_trans+0xcf/0x140 Call Trace: <IRQ> __dev_forward_skb2+0xe3/0x160 veth_xmit+0x6e/0x250 [veth] dev_hard_start_xmit+0xc7/0x200 __dev_queue_xmit+0x47f/0x520 ? skb_ensure_writable+0x85/0xa0 ? skb_mpls_pop+0x98/0x1c0 tcf_mirred_act+0x442/0x47e [act_mirred] tcf_action_exec+0x86/0x140 fl_classify+0x1d8/0x1e0 [cls_flower] ? dma_pte_clear_level+0x129/0x1a0 ? dma_pte_clear_level+0x129/0x1a0 ? prb_fill_curr_block+0x2f/0xc0 ? skb_copy_bits+0x11a/0x220 __tcf_classify+0x58/0x110 tcf_classify_ingress+0x6b/0x140 __netif_receive_skb_core.constprop.0+0x47d/0xfd0 ? __iommu_dma_unmap_swiotlb+0x44/0x90 __netif_receive_skb_one_core+0x3d/0xa0 netif_receive_skb+0x116/0x170 be_process_rx+0x22f/0x330 [be2net] be_poll+0x13c/0x370 [be2net] __napi_poll+0x2a/0x170 net_rx_action+0x22f/0x2f0 __do_softirq+0xca/0x2a8 __irq_exit_rcu+0xc1/0xe0 common_interrupt+0x83/0xa0
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-debuginfo-common-aarch64Upgrade bpftoolUpgrade kernel-debuginfoUpgrade kernel-livepatch-4.14.276-211.499Upgrade kernel-tools-develUpgrade kernel-develUpgrade kernel-livepatch-5.10.112-108.499Upgrade perfUpgrade perf-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-headersUpgrade kernel-debuginfo-common-x86_64Upgrade python-perf-debuginfoUpgrade kernelUpgrade python-perfUpgrade kernel-toolsUpgrade bpftool-debuginfo | May 21, 2025 | Feb 26, 2025 |
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade bpftoolUpgrade kernelUpgrade python3-perf | Jul 1, 2025 | Feb 26, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Feb 26, 2025 |
| Ubuntu | — | Upgrade linux-gcp-4.15Upgrade linux-hwe-5.4Upgrade linux-intel-iotg-5.15Upgrade linux-hwe-5.15Upgrade linux-realtimeUpgrade linux-ibmUpgrade linux-iotUpgrade linux-gcp-5.4Upgrade linux-fipsUpgrade linux-hweUpgrade linux-azure-4.15Upgrade linux-gcp-fipsUpgrade linux-kvmUpgrade linux-azure-5.4Upgrade linux-azure-5.15Upgrade linux-aws-hweUpgrade linux-aws-fipsUpgrade linux-azureUpgrade linux-oracleUpgrade linux-azure-fipsUpgrade linux-lowlatencyUpgrade linux-intel-iotgUpgrade linux-gcpUpgrade linux-bluefieldUpgrade linux-aws-5.4Upgrade linux-oracle-5.4Upgrade linux-awsUpgrade linux-ibm-5.4Upgrade linux-raspi-5.4Upgrade linux-lowlatency-hwe-5.15Upgrade linux-raspiUpgrade linuxUpgrade linux-gke | Mar 3, 2025 | Feb 26, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Feb 26, 2025 |
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