CVE-2022-49066

MEDIUM EPSS 15.9%
Published Feb 26, 20251y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Feb 26, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

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

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
15.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 9

VendorProductVersionRange
linuxlinux_kernel*≥2.6.24  –  <4.9.311
linuxlinux_kernel*≥4.10  –  <4.14.276
linuxlinux_kernel*≥4.15  –  <4.19.239
linuxlinux_kernel*≥4.20  –  <5.4.190
linuxlinux_kernel*≥5.5  –  <5.10.112
linuxlinux_kernel*≥5.11  –  <5.15.35
linuxlinux_kernel*≥5.16  –  <5.17.4
linuxlinux_kernel5.18any
linuxlinux_kernel5.18any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/1ef0088e43af1de4e3b365218c4d3179d9a37eec
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2fd90b86dff413fbf8128780c04ea9c6849c16e2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3de2a02b60a4ef0ab76263216f08c7d095fc7c42
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/46bc359fec0c6d87b70d7a008bcd9a5e30dd6f27
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/726e2c5929de841fdcef4e2bf995680688ae1b87
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/93940fc4cb81840dc0fa202de48cccb949a0261d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d417a859221f127e8edf09c14b76ab50f825e171
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d67c900f1947d64ba8a64f693504bcaab8d9000c
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/1ef0088e43af1de4e3b365218c4d3179d9a37eec
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2fd90b86dff413fbf8128780c04ea9c6849c16e2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3de2a02b60a4ef0ab76263216f08c7d095fc7c42
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/46bc359fec0c6d87b70d7a008bcd9a5e30dd6f27
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/726e2c5929de841fdcef4e2bf995680688ae1b87
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/93940fc4cb81840dc0fa202de48cccb949a0261d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d417a859221f127e8edf09c14b76ab50f825e171
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d67c900f1947d64ba8a64f693504bcaab8d9000c
    Patch