Vulnerability-Lookup

GHSA-3W79-F82R-VFCX

Vulnerability from github – Published: 2025-04-16 15:34 – Updated: 2026-09-14 12:31

Details

In the Linux kernel, the following vulnerability has been resolved:

net: fix NULL pointer dereference in l3mdev_l3_rcv

When delete l3s ipvlan:

ip link del link eth0 ipvlan1 type ipvlan mode l3s

This may cause a null pointer dereference:

Call trace:
 ip_rcv_finish+0x48/0xd0
 ip_rcv+0x5c/0x100
 __netif_receive_skb_one_core+0x64/0xb0
 __netif_receive_skb+0x20/0x80
 process_backlog+0xb4/0x204
 napi_poll+0xe8/0x294
 net_rx_action+0xd8/0x22c
 __do_softirq+0x12c/0x354

This is because l3mdev_l3_rcv() visit dev->l3mdev_ops after ipvlan_l3s_unregister() assign the dev->l3mdev_ops to NULL. The process like this:

(CPU1)                     | (CPU2)
l3mdev_l3_rcv()            |
  check dev->priv_flags:   |
    master = skb->dev;     |
                           |
                           | ipvlan_l3s_unregister()
                           |   set dev->priv_flags
                           |   dev->l3mdev_ops = NULL;
                           |
  visit master->l3mdev_ops |

To avoid this by do not set dev->l3mdev_ops when unregister l3s ipvlan.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2025-22103"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-04-16T15:16:04Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: fix NULL pointer dereference in l3mdev_l3_rcv\n\nWhen delete l3s ipvlan:\n\n    ip link del link eth0 ipvlan1 type ipvlan mode l3s\n\nThis may cause a null pointer dereference:\n\n    Call trace:\n     ip_rcv_finish+0x48/0xd0\n     ip_rcv+0x5c/0x100\n     __netif_receive_skb_one_core+0x64/0xb0\n     __netif_receive_skb+0x20/0x80\n     process_backlog+0xb4/0x204\n     napi_poll+0xe8/0x294\n     net_rx_action+0xd8/0x22c\n     __do_softirq+0x12c/0x354\n\nThis is because l3mdev_l3_rcv() visit dev-\u003el3mdev_ops after\nipvlan_l3s_unregister() assign the dev-\u003el3mdev_ops to NULL. The process\nlike this:\n\n    (CPU1)                     | (CPU2)\n    l3mdev_l3_rcv()            |\n      check dev-\u003epriv_flags:   |\n        master = skb-\u003edev;     |\n                               |\n                               | ipvlan_l3s_unregister()\n                               |   set dev-\u003epriv_flags\n                               |   dev-\u003el3mdev_ops = NULL;\n                               |\n      visit master-\u003el3mdev_ops |\n\nTo avoid this by do not set dev-\u003el3mdev_ops when unregister l3s ipvlan.",
  "id": "GHSA-3w79-f82r-vfcx",
  "modified": "2026-09-14T12:31:26Z",
  "published": "2025-04-16T15:34:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-22103"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0032c99e83b9ce6d5995d65900aa4b6ffb501cce"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1da52878f7fb74ace304f74325bb89e3e5546b55"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/52b44d8c653459c658b733d13658afdde45f6836"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/59599bce44af3df7a215ebc81cb166426e1c9204"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8da4d7f9141e8dbd3ece2f0e6930a0ea8812c862"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d97d6b1bd2b7f2a188d261d44c4519a13b8c406a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f9dff65140efc289f01bcf39c3ca66a8806b6132"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-22103 (GCVE-0-2025-22103)

Vulnerability from cvelistv5 – Published: 2025-04-16 14:12 – Updated: 2026-09-14 11:57

Title

net: fix NULL pointer dereference in l3mdev_l3_rcv

Summary

In the Linux kernel, the following vulnerability has been resolved: net: fix NULL pointer dereference in l3mdev_l3_rcv When delete l3s ipvlan: ip link del link eth0 ipvlan1 type ipvlan mode l3s This may cause a null pointer dereference: Call trace: ip_rcv_finish+0x48/0xd0 ip_rcv+0x5c/0x100 __netif_receive_skb_one_core+0x64/0xb0 __netif_receive_skb+0x20/0x80 process_backlog+0xb4/0x204 napi_poll+0xe8/0x294 net_rx_action+0xd8/0x22c __do_softirq+0x12c/0x354 This is because l3mdev_l3_rcv() visit dev->l3mdev_ops after ipvlan_l3s_unregister() assign the dev->l3mdev_ops to NULL. The process like this: (CPU1) | (CPU2) l3mdev_l3_rcv() | check dev->priv_flags: | master = skb->dev; | | | ipvlan_l3s_unregister() | set dev->priv_flags | dev->l3mdev_ops = NULL; | visit master->l3mdev_ops | To avoid this by do not set dev->l3mdev_ops when unregister l3s ipvlan.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

7 references

URL	Tags
https://git.kernel.org/stable/c/1da52878f7fb74ace…
https://git.kernel.org/stable/c/d97d6b1bd2b7f2a18…
https://git.kernel.org/stable/c/8da4d7f9141e8dbd3…
https://git.kernel.org/stable/c/52b44d8c653459c65…
https://git.kernel.org/stable/c/59599bce44af3df7a…
https://git.kernel.org/stable/c/f9dff65140efc289f…
https://git.kernel.org/stable/c/0032c99e83b9ce6d5…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: c675e06a98a474f7ad0af32ce467613da818da52 , < 1da52878f7fb74ace304f74325bb89e3e5546b55 (git) Affected: c675e06a98a474f7ad0af32ce467613da818da52 , < d97d6b1bd2b7f2a188d261d44c4519a13b8c406a (git) Affected: c675e06a98a474f7ad0af32ce467613da818da52 , < 8da4d7f9141e8dbd3ece2f0e6930a0ea8812c862 (git) Affected: c675e06a98a474f7ad0af32ce467613da818da52 , < 52b44d8c653459c658b733d13658afdde45f6836 (git) Affected: c675e06a98a474f7ad0af32ce467613da818da52 , < 59599bce44af3df7a215ebc81cb166426e1c9204 (git) Affected: c675e06a98a474f7ad0af32ce467613da818da52 , < f9dff65140efc289f01bcf39c3ca66a8806b6132 (git) Affected: c675e06a98a474f7ad0af32ce467613da818da52 , < 0032c99e83b9ce6d5995d65900aa4b6ffb501cce (git)
Linux	Linux	Affected: 5.1 Unaffected: 0 , < 5.1 (semver) Unaffected: 5.10.270 , ≤ 5.10.* (semver) Unaffected: 5.15.221 , ≤ 5.15.* (semver) Unaffected: 6.1.188 , ≤ 6.1.* (semver) Unaffected: 6.6.117 , ≤ 6.6.* (semver) Unaffected: 6.12.46 , ≤ 6.12.* (semver) Unaffected: 6.14.2 , ≤ 6.14.* (semver) Unaffected: 6.15 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ipvlan/ipvlan_l3s.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "1da52878f7fb74ace304f74325bb89e3e5546b55",
              "status": "affected",
              "version": "c675e06a98a474f7ad0af32ce467613da818da52",
              "versionType": "git"
            },
            {
              "lessThan": "d97d6b1bd2b7f2a188d261d44c4519a13b8c406a",
              "status": "affected",
              "version": "c675e06a98a474f7ad0af32ce467613da818da52",
              "versionType": "git"
            },
            {
              "lessThan": "8da4d7f9141e8dbd3ece2f0e6930a0ea8812c862",
              "status": "affected",
              "version": "c675e06a98a474f7ad0af32ce467613da818da52",
              "versionType": "git"
            },
            {
              "lessThan": "52b44d8c653459c658b733d13658afdde45f6836",
              "status": "affected",
              "version": "c675e06a98a474f7ad0af32ce467613da818da52",
              "versionType": "git"
            },
            {
              "lessThan": "59599bce44af3df7a215ebc81cb166426e1c9204",
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              "versionType": "git"
            },
            {
              "lessThan": "f9dff65140efc289f01bcf39c3ca66a8806b6132",
              "status": "affected",
              "version": "c675e06a98a474f7ad0af32ce467613da818da52",
              "versionType": "git"
            },
            {
              "lessThan": "0032c99e83b9ce6d5995d65900aa4b6ffb501cce",
              "status": "affected",
              "version": "c675e06a98a474f7ad0af32ce467613da818da52",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ipvlan/ipvlan_l3s.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.1"
            },
            {
              "lessThan": "5.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.117",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.46",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.14.*",
              "status": "unaffected",
              "version": "6.14.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.270",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: fix NULL pointer dereference in l3mdev_l3_rcv\n\nWhen delete l3s ipvlan:\n\n    ip link del link eth0 ipvlan1 type ipvlan mode l3s\n\nThis may cause a null pointer dereference:\n\n    Call trace:\n     ip_rcv_finish+0x48/0xd0\n     ip_rcv+0x5c/0x100\n     __netif_receive_skb_one_core+0x64/0xb0\n     __netif_receive_skb+0x20/0x80\n     process_backlog+0xb4/0x204\n     napi_poll+0xe8/0x294\n     net_rx_action+0xd8/0x22c\n     __do_softirq+0x12c/0x354\n\nThis is because l3mdev_l3_rcv() visit dev-\u003el3mdev_ops after\nipvlan_l3s_unregister() assign the dev-\u003el3mdev_ops to NULL. The process\nlike this:\n\n    (CPU1)                     | (CPU2)\n    l3mdev_l3_rcv()            |\n      check dev-\u003epriv_flags:   |\n        master = skb-\u003edev;     |\n                               |\n                               | ipvlan_l3s_unregister()\n                               |   set dev-\u003epriv_flags\n                               |   dev-\u003el3mdev_ops = NULL;\n                               |\n      visit master-\u003el3mdev_ops |\n\nTo avoid this by do not set dev-\u003el3mdev_ops when unregister l3s ipvlan."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-14T11:57:55.772Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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        },
        {
          "url": "https://git.kernel.org/stable/c/52b44d8c653459c658b733d13658afdde45f6836"
        },
        {
          "url": "https://git.kernel.org/stable/c/59599bce44af3df7a215ebc81cb166426e1c9204"
        },
        {
          "url": "https://git.kernel.org/stable/c/f9dff65140efc289f01bcf39c3ca66a8806b6132"
        },
        {
          "url": "https://git.kernel.org/stable/c/0032c99e83b9ce6d5995d65900aa4b6ffb501cce"
        }
      ],
      "title": "net: fix NULL pointer dereference in l3mdev_l3_rcv",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-22103",
    "datePublished": "2025-04-16T14:12:52.164Z",
    "dateReserved": "2024-12-29T08:45:45.819Z",
    "dateUpdated": "2026-09-14T11:57:55.772Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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