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CVE-2025-38271 (GCVE-0-2025-38271)

Vulnerability from cvelistv5 – Published: 2025-07-10 07:41 – Updated: 2026-05-11 21:24
VLAI
Title
net: prevent a NULL deref in rtnl_create_link()
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]
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: 7e4d784f5810bba76c4593791028e13cce4af547 , < 8a29ae8428a5c26f0b4471c2057d9e9415c53109 (git)
Affected: 7e4d784f5810bba76c4593791028e13cce4af547 , < feafc73f3e6ae73371777a037d41d2e31c929636 (git)
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Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.15.3 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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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"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.15.3",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix"
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        }
      ],
      "cpeApplicability": [
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                  "versionEndExcluding": "6.15.3",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "negate": false,
              "operator": "OR"
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      "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": "2026-05-11T21:24:38.767Z",
        "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()",
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        "engine": "bippy-1.2.0"
      }
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  },
  "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": "2026-05-11T21:24:38.767Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-38271",
      "date": "2026-09-17",
      "epss": "0.0014",
      "percentile": "0.03723"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38271\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-10T08:15:25.307\",\"lastModified\":\"2026-06-17T09:16:31.407\",\"vulnStatus\":\"Analyzed\",\"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]\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/core/rtnetlink.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"7e4d784f5810bba76c4593791028e13cce4af547\",\"lessThan\":\"8a29ae8428a5c26f0b4471c2057d9e9415c53109\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7e4d784f5810bba76c4593791028e13cce4af547\",\"lessThan\":\"feafc73f3e6ae73371777a037d41d2e31c929636\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/core/rtnetlink.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.15\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.15\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.15.3\",\"lessThanOrEqual\":\"6.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.16\",\"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\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.15\",\"versionEndExcluding\":\"6.15.3\",\"matchCriteriaId\":\"658B94DB-A94A-4588-94DD-614A72725C45\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/8a29ae8428a5c26f0b4471c2057d9e9415c53109\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/feafc73f3e6ae73371777a037d41d2e31c929636\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-30T01:00:04+00:00",
      "cve": "CVE-2025-38271",
      "id": "CVE-2025-38271",
      "initial_release_date": "2025-07-10T00:00:00+00:00",
      "product_status:known_affected": "14",
      "product_status:known_not_affected": "260",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Linux kernel: Denial of Service via NULL dereference in rtnl_create_link()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-38271.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-03T16:34:32Z",
      "cve": "CVE-2025-38271",
      "id": "CVE-2025-38271",
      "initial_release_date": "2025-07-10T23:23:42Z",
      "product_status:known_not_affected": "524",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-38271",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-38271.json",
      "version": "6"
    }
  }
}



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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.


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