FKIE_CVE-2022-49911

Vulnerability from fkie_nvd - Published: 2025-05-01 15:16 - Updated: 2026-06-17 05:19
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: enforce documented limit to prevent allocating huge memory Daniel Xu reported that the hash:net,iface type of the ipset subsystem does not limit adding the same network with different interfaces to a set, which can lead to huge memory usage or allocation failure. The quick reproducer is $ ipset create ACL.IN.ALL_PERMIT hash:net,iface hashsize 1048576 timeout 0 $ for i in $(seq 0 100); do /sbin/ipset add ACL.IN.ALL_PERMIT 0.0.0.0/0,kaf_$i timeout 0 -exist; done The backtrace when vmalloc fails: [Tue Oct 25 00:13:08 2022] ipset: vmalloc error: size 1073741848, exceeds total pages <...> [Tue Oct 25 00:13:08 2022] Call Trace: [Tue Oct 25 00:13:08 2022] <TASK> [Tue Oct 25 00:13:08 2022] dump_stack_lvl+0x48/0x60 [Tue Oct 25 00:13:08 2022] warn_alloc+0x155/0x180 [Tue Oct 25 00:13:08 2022] __vmalloc_node_range+0x72a/0x760 [Tue Oct 25 00:13:08 2022] ? hash_netiface4_add+0x7c0/0xb20 [Tue Oct 25 00:13:08 2022] ? __kmalloc_large_node+0x4a/0x90 [Tue Oct 25 00:13:08 2022] kvmalloc_node+0xa6/0xd0 [Tue Oct 25 00:13:08 2022] ? hash_netiface4_resize+0x99/0x710 <...> The fix is to enforce the limit documented in the ipset(8) manpage: > The internal restriction of the hash:net,iface set type is that the same > network prefix cannot be stored with more than 64 different interfaces > in a single set.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/42d20d5e24575c9afa2d66d9a51e7386db9514f5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/510841da1fcc16f702440ab58ef0b4d82a9056b7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a37ef32fe5956fe9248df68f6a61997845ba047ePatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/ipset/ip_set_hash_gen.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "42d20d5e24575c9afa2d66d9a51e7386db9514f5",
              "status": "affected",
              "version": "ccf0a4b7fc688561428290265e4effde41446668",
              "versionType": "git"
            },
            {
              "lessThan": "a37ef32fe5956fe9248df68f6a61997845ba047e",
              "status": "affected",
              "version": "ccf0a4b7fc688561428290265e4effde41446668",
              "versionType": "git"
            },
            {
              "lessThan": "510841da1fcc16f702440ab58ef0b4d82a9056b7",
              "status": "affected",
              "version": "ccf0a4b7fc688561428290265e4effde41446668",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/ipset/ip_set_hash_gen.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.11"
            },
            {
              "lessThan": "5.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.78",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "AB8B27B9-B41B-42D5-AE67-0A89A8A8EEB1",
              "versionEndExcluding": "5.15.78",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "EC9A754E-625D-42F3-87A7-960D643E2867",
              "versionEndExcluding": "6.0.8",
              "versionStartIncluding": "5.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "E7E331DA-1FB0-4DEC-91AC-7DA69D461C11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "17F0B248-42CF-4AE6-A469-BB1BAE7F4705",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*",
              "matchCriteriaId": "E2422816-0C14-4B5E-A1E6-A9D776E5C49B",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ipset: enforce documented limit to prevent allocating huge memory\n\nDaniel Xu reported that the hash:net,iface type of the ipset subsystem does\nnot limit adding the same network with different interfaces to a set, which\ncan lead to huge memory usage or allocation failure.\n\nThe quick reproducer is\n\n$ ipset create ACL.IN.ALL_PERMIT hash:net,iface hashsize 1048576 timeout 0\n$ for i in $(seq 0 100); do /sbin/ipset add ACL.IN.ALL_PERMIT 0.0.0.0/0,kaf_$i timeout 0 -exist; done\n\nThe backtrace when vmalloc fails:\n\n        [Tue Oct 25 00:13:08 2022] ipset: vmalloc error: size 1073741848, exceeds total pages\n        \u003c...\u003e\n        [Tue Oct 25 00:13:08 2022] Call Trace:\n        [Tue Oct 25 00:13:08 2022]  \u003cTASK\u003e\n        [Tue Oct 25 00:13:08 2022]  dump_stack_lvl+0x48/0x60\n        [Tue Oct 25 00:13:08 2022]  warn_alloc+0x155/0x180\n        [Tue Oct 25 00:13:08 2022]  __vmalloc_node_range+0x72a/0x760\n        [Tue Oct 25 00:13:08 2022]  ? hash_netiface4_add+0x7c0/0xb20\n        [Tue Oct 25 00:13:08 2022]  ? __kmalloc_large_node+0x4a/0x90\n        [Tue Oct 25 00:13:08 2022]  kvmalloc_node+0xa6/0xd0\n        [Tue Oct 25 00:13:08 2022]  ? hash_netiface4_resize+0x99/0x710\n        \u003c...\u003e\n\nThe fix is to enforce the limit documented in the ipset(8) manpage:\n\n\u003e  The internal restriction of the hash:net,iface set type is that the same\n\u003e  network prefix cannot be stored with more than 64 different interfaces\n\u003e  in a single set."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfilter: ipset: aplicar el l\u00edmite documentado para evitar la asignaci\u00f3n de grandes cantidades de memoria. Daniel Xu inform\u00f3 que el tipo hash:net,iface del subsistema ipset no limita la adici\u00f3n de la misma red con diferentes interfaces a un conjunto, lo que puede provocar un uso excesivo de memoria o fallos de asignaci\u00f3n. El reproductor r\u00e1pido es: $ ipset create ACL.IN.ALL_PERMIT hash:net,iface hashsize 1048576 timeout 0 $ for i in $(seq 0 100); do /sbin/ipset add ACL.IN.ALL_PERMIT 0.0.0.0/0,kaf_$i timeout 0 -exist; hecho El backtrace cuando vmalloc falla: [Tue Oct 25 00:13:08 2022] ipset: vmalloc error: size 1073741848, exceeds total pages \u0026lt;...\u0026gt; [Tue Oct 25 00:13:08 2022] Call Trace: [Tue Oct 25 00:13:08 2022]  [Tue Oct 25 00:13:08 2022] dump_stack_lvl+0x48/0x60 [Tue Oct 25 00:13:08 2022] warn_alloc+0x155/0x180 [Tue Oct 25 00:13:08 2022] __vmalloc_node_range+0x72a/0x760 [Tue Oct 25 00:13:08 2022] ? hash_netiface4_add+0x7c0/0xb20 [Tue Oct 25 00:13:08 2022] ? __kmalloc_large_node+0x4a/0x90 [Tue Oct 25 00:13:08 2022] kvmalloc_node+0xa6/0xd0 [Tue Oct 25 00:13:08 2022] ? hash_netiface4_resize+0x99/0x710 \u0026lt;...\u0026gt;  La soluci\u00f3n es aplicar el l\u00edmite documentado en la p\u00e1gina de manual de ipset(8): \u0026gt; La restricci\u00f3n interna del tipo de conjunto hash:net,iface es que el mismo prefijo de red no se puede almacenar con m\u00e1s de 64 interfaces diferentes en un solo conjunto."
    }
  ],
  "id": "CVE-2022-49911",
  "lastModified": "2026-06-17T05:19:29.653",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-05-01T15:16:16.260",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/42d20d5e24575c9afa2d66d9a51e7386db9514f5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/510841da1fcc16f702440ab58ef0b4d82a9056b7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a37ef32fe5956fe9248df68f6a61997845ba047e"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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