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CVE-2022-49066 (GCVE-0-2022-49066)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:54 – Updated: 2026-05-11 18:52
VLAI
Title
veth: Ensure eth header is in skb's linear part
Summary
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
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e314dbdc1c0dc6a548ecf0afce28ecfd538ff568 , < 3de2a02b60a4ef0ab76263216f08c7d095fc7c42 (git)
Affected: e314dbdc1c0dc6a548ecf0afce28ecfd538ff568 , < d417a859221f127e8edf09c14b76ab50f825e171 (git)
Affected: e314dbdc1c0dc6a548ecf0afce28ecfd538ff568 , < 1ef0088e43af1de4e3b365218c4d3179d9a37eec (git)
Affected: e314dbdc1c0dc6a548ecf0afce28ecfd538ff568 , < 2fd90b86dff413fbf8128780c04ea9c6849c16e2 (git)
Affected: e314dbdc1c0dc6a548ecf0afce28ecfd538ff568 , < d67c900f1947d64ba8a64f693504bcaab8d9000c (git)
Affected: e314dbdc1c0dc6a548ecf0afce28ecfd538ff568 , < 93940fc4cb81840dc0fa202de48cccb949a0261d (git)
Affected: e314dbdc1c0dc6a548ecf0afce28ecfd538ff568 , < 46bc359fec0c6d87b70d7a008bcd9a5e30dd6f27 (git)
Affected: e314dbdc1c0dc6a548ecf0afce28ecfd538ff568 , < 726e2c5929de841fdcef4e2bf995680688ae1b87 (git)
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Linux Linux Affected: 2.6.24
Unaffected: 0 , < 2.6.24 (semver)
Unaffected: 4.9.311 , ≤ 4.9.* (semver)
Unaffected: 4.14.276 , ≤ 4.14.* (semver)
Unaffected: 4.19.239 , ≤ 4.19.* (semver)
Unaffected: 5.4.190 , ≤ 5.4.* (semver)
Unaffected: 5.10.112 , ≤ 5.10.* (semver)
Unaffected: 5.15.35 , ≤ 5.15.* (semver)
Unaffected: 5.17.4 , ≤ 5.17.* (semver)
Unaffected: 5.18 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
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              "status": "unaffected",
              "version": "4.19.239",
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              "version": "5.10.112",
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              "status": "unaffected",
              "version": "5.15.35",
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      "cpeApplicability": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nveth: Ensure eth header is in skb\u0027s linear part\n\nAfter feeding a decapsulated packet to a veth device with act_mirred,\nskb_headlen() may be 0. But veth_xmit() calls __dev_forward_skb(),\nwhich expects at least ETH_HLEN byte of linear data (as\n__dev_forward_skb2() calls eth_type_trans(), which pulls ETH_HLEN bytes\nunconditionally).\n\nUse pskb_may_pull() to ensure veth_xmit() respects this constraint.\n\nkernel BUG at include/linux/skbuff.h:2328!\nRIP: 0010:eth_type_trans+0xcf/0x140\nCall Trace:\n \u003cIRQ\u003e\n __dev_forward_skb2+0xe3/0x160\n veth_xmit+0x6e/0x250 [veth]\n dev_hard_start_xmit+0xc7/0x200\n __dev_queue_xmit+0x47f/0x520\n ? skb_ensure_writable+0x85/0xa0\n ? skb_mpls_pop+0x98/0x1c0\n tcf_mirred_act+0x442/0x47e [act_mirred]\n tcf_action_exec+0x86/0x140\n fl_classify+0x1d8/0x1e0 [cls_flower]\n ? dma_pte_clear_level+0x129/0x1a0\n ? dma_pte_clear_level+0x129/0x1a0\n ? prb_fill_curr_block+0x2f/0xc0\n ? skb_copy_bits+0x11a/0x220\n __tcf_classify+0x58/0x110\n tcf_classify_ingress+0x6b/0x140\n __netif_receive_skb_core.constprop.0+0x47d/0xfd0\n ? __iommu_dma_unmap_swiotlb+0x44/0x90\n __netif_receive_skb_one_core+0x3d/0xa0\n netif_receive_skb+0x116/0x170\n be_process_rx+0x22f/0x330 [be2net]\n be_poll+0x13c/0x370 [be2net]\n __napi_poll+0x2a/0x170\n net_rx_action+0x22f/0x2f0\n __do_softirq+0xca/0x2a8\n __irq_exit_rcu+0xc1/0xe0\n common_interrupt+0x83/0xa0"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T18:52:22.189Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3de2a02b60a4ef0ab76263216f08c7d095fc7c42"
        },
        {
          "url": "https://git.kernel.org/stable/c/d417a859221f127e8edf09c14b76ab50f825e171"
        },
        {
          "url": "https://git.kernel.org/stable/c/1ef0088e43af1de4e3b365218c4d3179d9a37eec"
        },
        {
          "url": "https://git.kernel.org/stable/c/2fd90b86dff413fbf8128780c04ea9c6849c16e2"
        },
        {
          "url": "https://git.kernel.org/stable/c/d67c900f1947d64ba8a64f693504bcaab8d9000c"
        },
        {
          "url": "https://git.kernel.org/stable/c/93940fc4cb81840dc0fa202de48cccb949a0261d"
        },
        {
          "url": "https://git.kernel.org/stable/c/46bc359fec0c6d87b70d7a008bcd9a5e30dd6f27"
        },
        {
          "url": "https://git.kernel.org/stable/c/726e2c5929de841fdcef4e2bf995680688ae1b87"
        }
      ],
      "title": "veth: Ensure eth header is in skb\u0027s linear part",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49066",
    "datePublished": "2025-02-26T01:54:34.395Z",
    "dateReserved": "2025-02-26T01:49:39.244Z",
    "dateUpdated": "2026-05-11T18:52:22.189Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-49066",
      "date": "2026-09-16",
      "epss": "0.00264",
      "percentile": "0.18486"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49066\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:00:43.820\",\"lastModified\":\"2026-06-17T05:16:59.227\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nveth: Ensure eth header is in skb\u0027s linear part\\n\\nAfter feeding a decapsulated packet to a veth device with act_mirred,\\nskb_headlen() may be 0. But veth_xmit() calls __dev_forward_skb(),\\nwhich expects at least ETH_HLEN byte of linear data (as\\n__dev_forward_skb2() calls eth_type_trans(), which pulls ETH_HLEN bytes\\nunconditionally).\\n\\nUse pskb_may_pull() to ensure veth_xmit() respects this constraint.\\n\\nkernel BUG at include/linux/skbuff.h:2328!\\nRIP: 0010:eth_type_trans+0xcf/0x140\\nCall Trace:\\n \u003cIRQ\u003e\\n __dev_forward_skb2+0xe3/0x160\\n veth_xmit+0x6e/0x250 [veth]\\n dev_hard_start_xmit+0xc7/0x200\\n __dev_queue_xmit+0x47f/0x520\\n ? skb_ensure_writable+0x85/0xa0\\n ? skb_mpls_pop+0x98/0x1c0\\n tcf_mirred_act+0x442/0x47e [act_mirred]\\n tcf_action_exec+0x86/0x140\\n fl_classify+0x1d8/0x1e0 [cls_flower]\\n ? dma_pte_clear_level+0x129/0x1a0\\n ? dma_pte_clear_level+0x129/0x1a0\\n ? prb_fill_curr_block+0x2f/0xc0\\n ? skb_copy_bits+0x11a/0x220\\n __tcf_classify+0x58/0x110\\n tcf_classify_ingress+0x6b/0x140\\n __netif_receive_skb_core.constprop.0+0x47d/0xfd0\\n ? __iommu_dma_unmap_swiotlb+0x44/0x90\\n __netif_receive_skb_one_core+0x3d/0xa0\\n netif_receive_skb+0x116/0x170\\n be_process_rx+0x22f/0x330 [be2net]\\n be_poll+0x13c/0x370 [be2net]\\n __napi_poll+0x2a/0x170\\n net_rx_action+0x22f/0x2f0\\n __do_softirq+0xca/0x2a8\\n __irq_exit_rcu+0xc1/0xe0\\n common_interrupt+0x83/0xa0\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: veth: Asegurarse de que el encabezado eth est\u00e9 en la parte lineal de skb Despu\u00e9s de alimentar un paquete desencapsulado a un dispositivo veth con act_mirred, skb_headlen() puede ser 0. Pero veth_xmit() llama a __dev_forward_skb(), que espera al menos ETH_HLEN bytes de datos lineales (como __dev_forward_skb2() llama a eth_type_trans(), que extrae ETH_HLEN bytes incondicionalmente). Utilice pskb_may_pull() para asegurarse de que veth_xmit() respete esta restricci\u00f3n. \u00a1ERROR del kernel en include/linux/skbuff.h:2328! RIP: 0010:eth_type_trans+0xcf/0x140 Rastreo de llamadas:  __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] ? 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\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/net/veth.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"e314dbdc1c0dc6a548ecf0afce28ecfd538ff568\",\"lessThan\":\"3de2a02b60a4ef0ab76263216f08c7d095fc7c42\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e314dbdc1c0dc6a548ecf0afce28ecfd538ff568\",\"lessThan\":\"d417a859221f127e8edf09c14b76ab50f825e171\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e314dbdc1c0dc6a548ecf0afce28ecfd538ff568\",\"lessThan\":\"1ef0088e43af1de4e3b365218c4d3179d9a37eec\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e314dbdc1c0dc6a548ecf0afce28ecfd538ff568\",\"lessThan\":\"2fd90b86dff413fbf8128780c04ea9c6849c16e2\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e314dbdc1c0dc6a548ecf0afce28ecfd538ff568\",\"lessThan\":\"d67c900f1947d64ba8a64f693504bcaab8d9000c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e314dbdc1c0dc6a548ecf0afce28ecfd538ff568\",\"lessThan\":\"93940fc4cb81840dc0fa202de48cccb949a0261d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e314dbdc1c0dc6a548ecf0afce28ecfd538ff568\",\"lessThan\":\"46bc359fec0c6d87b70d7a008bcd9a5e30dd6f27\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e314dbdc1c0dc6a548ecf0afce28ecfd538ff568\",\"lessThan\":\"726e2c5929de841fdcef4e2bf995680688ae1b87\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/net/veth.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.24\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.24\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.9.311\",\"lessThanOrEqual\":\"4.9.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.14.276\",\"lessThanOrEqual\":\"4.14.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.239\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.190\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.112\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.35\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.17.4\",\"lessThanOrEqual\":\"5.17.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.18\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.6.24\",\"versionEndExcluding\":\"4.9.311\",\"matchCriteriaId\":\"03755CB2-5811-4C2A-9848-10A1F5F86F9C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.10\",\"versionEndExcluding\":\"4.14.276\",\"matchCriteriaId\":\"6D9B028C-6313-47F9-94B7-5F8122345E49\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.15\",\"versionEndExcluding\":\"4.19.239\",\"matchCriteriaId\":\"712D9B45-4B53-4563-94B5-F758AFBBFB0D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.190\",\"matchCriteriaId\":\"E0ADBA6D-47D8-4518-8D10-9B9196DE680B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.112\",\"matchCriteriaId\":\"0460A5D2-3024-497A-B799-23E025B91972\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.35\",\"matchCriteriaId\":\"05ABCC3F-88A9-47F9-9D40-8665747B2E43\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*: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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T20:55:09+00:00",
      "cve": "CVE-2022-49066",
      "id": "CVE-2022-49066",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "286",
      "product_status:known_affected": "80",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: veth: Ensure eth header is in skb\u0027s linear part",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49066.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-11T16:55:41Z",
      "cve": "CVE-2022-49066",
      "id": "CVE-2022-49066",
      "initial_release_date": "2025-02-27T03:12:48Z",
      "product_status:known_affected": "530",
      "product_status:known_not_affected": "157",
      "product_status:recommended": "305",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49066",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49066.json",
      "version": "56"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.