CVE-2025-38271 (GCVE-0-2025-38271)
Vulnerability from cvelistv5
Published
2025-07-10 07:41
Modified
2025-07-28 04:16
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: prevent a NULL deref in rtnl_create_link() At the time rtnl_create_link() is running, dev->netdev_ops is NULL, we must not use netdev_lock_ops() or risk a NULL deref if CONFIG_NET_SHAPER is defined. Use netif_set_group() instead of dev_set_group(). RIP: 0010:netdev_need_ops_lock include/net/netdev_lock.h:33 [inline] RIP: 0010:netdev_lock_ops include/net/netdev_lock.h:41 [inline] RIP: 0010:dev_set_group+0xc0/0x230 net/core/dev_api.c:82 Call Trace: <TASK> rtnl_create_link+0x748/0xd10 net/core/rtnetlink.c:3674 rtnl_newlink_create+0x25c/0xb00 net/core/rtnetlink.c:3813 __rtnl_newlink net/core/rtnetlink.c:3940 [inline] rtnl_newlink+0x16d6/0x1c70 net/core/rtnetlink.c:4055 rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6944 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2534 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x75b/0x8d0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline]
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8a29ae8428a5c26f0b4471c2057d9e9415c53109
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/feafc73f3e6ae73371777a037d41d2e31c929636
Impacted products
Vendor Product Version
Linux Linux Version: 7e4d784f5810bba76c4593791028e13cce4af547
Version: 7e4d784f5810bba76c4593791028e13cce4af547
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   Linux Linux Version: 6.15
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/core/rtnetlink.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8a29ae8428a5c26f0b4471c2057d9e9415c53109",
              "status": "affected",
              "version": "7e4d784f5810bba76c4593791028e13cce4af547",
              "versionType": "git"
            },
            {
              "lessThan": "feafc73f3e6ae73371777a037d41d2e31c929636",
              "status": "affected",
              "version": "7e4d784f5810bba76c4593791028e13cce4af547",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/core/rtnetlink.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.3",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: prevent a NULL deref in rtnl_create_link()\n\nAt the time rtnl_create_link() is running, dev-\u003enetdev_ops is NULL,\nwe must not use netdev_lock_ops() or risk a NULL deref if\nCONFIG_NET_SHAPER is defined.\n\nUse netif_set_group() instead of dev_set_group().\n\n RIP: 0010:netdev_need_ops_lock include/net/netdev_lock.h:33 [inline]\n RIP: 0010:netdev_lock_ops include/net/netdev_lock.h:41 [inline]\n RIP: 0010:dev_set_group+0xc0/0x230 net/core/dev_api.c:82\nCall Trace:\n \u003cTASK\u003e\n  rtnl_create_link+0x748/0xd10 net/core/rtnetlink.c:3674\n  rtnl_newlink_create+0x25c/0xb00 net/core/rtnetlink.c:3813\n  __rtnl_newlink net/core/rtnetlink.c:3940 [inline]\n  rtnl_newlink+0x16d6/0x1c70 net/core/rtnetlink.c:4055\n  rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6944\n  netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2534\n  netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]\n  netlink_unicast+0x75b/0x8d0 net/netlink/af_netlink.c:1339\n  netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1883\n  sock_sendmsg_nosec net/socket.c:712 [inline]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-28T04:16:52.653Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8a29ae8428a5c26f0b4471c2057d9e9415c53109"
        },
        {
          "url": "https://git.kernel.org/stable/c/feafc73f3e6ae73371777a037d41d2e31c929636"
        }
      ],
      "title": "net: prevent a NULL deref in rtnl_create_link()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38271",
    "datePublished": "2025-07-10T07:41:53.126Z",
    "dateReserved": "2025-04-16T04:51:23.998Z",
    "dateUpdated": "2025-07-28T04:16:52.653Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38271\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-10T08:15:25.307\",\"lastModified\":\"2025-07-10T13:17:30.017\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: prevent a NULL deref in rtnl_create_link()\\n\\nAt the time rtnl_create_link() is running, dev-\u003enetdev_ops is NULL,\\nwe must not use netdev_lock_ops() or risk a NULL deref if\\nCONFIG_NET_SHAPER is defined.\\n\\nUse netif_set_group() instead of dev_set_group().\\n\\n RIP: 0010:netdev_need_ops_lock include/net/netdev_lock.h:33 [inline]\\n RIP: 0010:netdev_lock_ops include/net/netdev_lock.h:41 [inline]\\n RIP: 0010:dev_set_group+0xc0/0x230 net/core/dev_api.c:82\\nCall Trace:\\n \u003cTASK\u003e\\n  rtnl_create_link+0x748/0xd10 net/core/rtnetlink.c:3674\\n  rtnl_newlink_create+0x25c/0xb00 net/core/rtnetlink.c:3813\\n  __rtnl_newlink net/core/rtnetlink.c:3940 [inline]\\n  rtnl_newlink+0x16d6/0x1c70 net/core/rtnetlink.c:4055\\n  rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6944\\n  netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2534\\n  netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]\\n  netlink_unicast+0x75b/0x8d0 net/netlink/af_netlink.c:1339\\n  netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1883\\n  sock_sendmsg_nosec net/socket.c:712 [inline]\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: impide una desreferencia NULL en rtnl_create_link(). Mientras rtnl_create_link() se ejecuta, dev-\u0026gt;netdev_ops es NULL. No debemos usar netdev_lock_ops() o corremos el riesgo de una desreferencia NULL si CONFIG_NET_SHAPER est\u00e1 definido. Use netif_set_group() en lugar de dev_set_group(). RIP: 0010:netdev_need_ops_lock include/net/netdev_lock.h:33 [en l\u00ednea] RIP: 0010:netdev_lock_ops include/net/netdev_lock.h:41 [en l\u00ednea] RIP: 0010:dev_set_group+0xc0/0x230 net/core/dev_api.c:82 Rastreo de llamadas:  rtnl_create_link+0x748/0xd10 net/core/rtnetlink.c:3674 rtnl_newlink_create+0x25c/0xb00 net/core/rtnetlink.c:3813 __rtnl_newlink net/core/rtnetlink.c:3940 [en l\u00ednea] rtnl_newlink+0x16d6/0x1c70 net/core/rtnetlink.c:4055 rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6944 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2534 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [en l\u00ednea] netlink_unicast+0x75b/0x8d0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [en l\u00ednea]\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/8a29ae8428a5c26f0b4471c2057d9e9415c53109\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/feafc73f3e6ae73371777a037d41d2e31c929636\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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