CVE-2025-22103 (GCVE-0-2025-22103)
Vulnerability from cvelistv5
Published
2025-04-16 14:12
Modified
2025-09-09 17:05
Severity ?
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0032c99e83b9ce6d5995d65900aa4b6ffb501cce
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/59599bce44af3df7a215ebc81cb166426e1c9204
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f9dff65140efc289f01bcf39c3ca66a8806b6132
Impacted products
Vendor Product Version
Linux Linux Version: c675e06a98a474f7ad0af32ce467613da818da52
Version: c675e06a98a474f7ad0af32ce467613da818da52
Version: c675e06a98a474f7ad0af32ce467613da818da52
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   Linux Linux Version: 5.1
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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": "59599bce44af3df7a215ebc81cb166426e1c9204",
              "status": "affected",
              "version": "c675e06a98a474f7ad0af32ce467613da818da52",
              "versionType": "git"
            },
            {
              "lessThan": "f9dff65140efc289f01bcf39c3ca66a8806b6132",
              "status": "affected",
              "version": "c675e06a98a474f7ad0af32ce467613da818da52",
              "versionType": "git"
            },
            {
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              "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": "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": "6.12.46",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14.2",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15",
                  "versionStartIncluding": "5.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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": "2025-09-09T17:05:49.571Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "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"
      }
    }
  },
  "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": "2025-09-09T17:05:49.571Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-22103\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-04-16T15:16:04.650\",\"lastModified\":\"2025-09-09T17:15:42.080\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"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.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: corregir la desreferencia de puntero nulo en l3mdev_l3_rcv Al eliminar l3s ipvlan: ip link del link eth0 ipvlan1 type ipvlan mode l3s Esto puede causar una desreferencia de puntero nulo: Rastreo de llamada: 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 Esto se debe a que l3mdev_l3_rcv() visita Despu\u00e9s de ejecutar ipvlan_l3s_unregister(), dev-\u0026gt;l3mdev_ops asigna el valor NULL a dev-\u0026gt;l3mdev_ops. El proceso es el siguiente: (CPU1) | (CPU2) l3mdev_l3_rcv() | check dev-\u0026gt;priv_flags: | master = skb-\u0026gt;dev; | | | ipvlan_l3s_unregister() | set dev-\u0026gt;priv_flags | dev-\u0026gt;l3mdev_ops = NULL; | visit master-\u0026gt;l3mdev_ops | Para evitar esto, no configure dev-\u0026gt;l3mdev_ops al cancelar el registro de ipvlan l3s.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0032c99e83b9ce6d5995d65900aa4b6ffb501cce\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/59599bce44af3df7a215ebc81cb166426e1c9204\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f9dff65140efc289f01bcf39c3ca66a8806b6132\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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