CVE-2022-1012 (GCVE-0-2022-1012)

Vulnerability from cvelistv5 – Published: 2022-08-05 00:00 – Updated: 2024-08-02 23:47
VLAI
Summary
A memory leak problem was found in the TCP source port generation algorithm in net/ipv4/tcp.c due to the small table perturb size. This flaw may allow an attacker to information leak and may cause a denial of service problem.
Severity
8.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a Kernel Affected: Linux kernel version prior to 5.18-rc6
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T23:47:42.922Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://lore.kernel.org/lkml/20220427065233.2075-1-w%401wt.eu/T/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2064604"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20221020-0006/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Kernel",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Linux kernel version prior to 5.18-rc6"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A memory leak problem was found in the TCP source port generation algorithm in net/ipv4/tcp.c due to the small table perturb size. This flaw may allow an attacker to information leak and may cause a denial of service problem."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-401",
              "description": "CWE-401",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-10-20T00:00:00.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "url": "https://lore.kernel.org/lkml/20220427065233.2075-1-w%401wt.eu/T/"
        },
        {
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2064604"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20221020-0006/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2022-1012",
    "datePublished": "2022-08-05T00:00:00.000Z",
    "dateReserved": "2022-03-17T00:00:00.000Z",
    "dateUpdated": "2024-08-02T23:47:42.922Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-1012",
      "date": "2026-08-04",
      "epss": "0.03865",
      "percentile": "0.89146"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"5.18\", \"matchCriteriaId\": \"FE93544F-B946-47CF-9697-FBF3484FCB92\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:5.18:-:*:*:*:*:*:*\", \"matchCriteriaId\": \"0384FA0A-DE99-48D7-84E3-46ED0C3B5E03\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:*\", \"matchCriteriaId\": \"6AD94161-84BB-42E6-9882-4FC0C42E9FC1\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:5.18:rc2:*:*:*:*:*:*\", \"matchCriteriaId\": \"7AB06DDF-3C2B-416D-B448-E990D8FF67A9\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:5.18:rc3:*:*:*:*:*:*\", \"matchCriteriaId\": \"EAE6C6C5-4D21-4C04-897C-70CBBB3D7B91\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:5.18:rc4:*:*:*:*:*:*\", \"matchCriteriaId\": \"DA5F085D-52F3-4EE2-8353-455D1A6FE073\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:5.18:rc5:*:*:*:*:*:*\", \"matchCriteriaId\": \"D6EE5B78-0D83-4715-893C-ABD69B49E7FC\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"A memory leak problem was found in the TCP source port generation algorithm in net/ipv4/tcp.c due to the small table perturb size. This flaw may allow an attacker to information leak and may cause a denial of service problem.\"}, {\"lang\": \"es\", \"value\": \"Se ha encontrado un problema de p\\u00e9rdida de memoria en el algoritmo de generaci\\u00f3n de puertos de origen TCP en el archivo net/ipv4/tcp.c debido al peque\\u00f1o tama\\u00f1o de la tabla de perturbaci\\u00f3n. Este fallo puede permitir a un atacante un filtrado de informaci\\u00f3n y puede causar un problema de denegaci\\u00f3n de servicio\"}]",
      "id": "CVE-2022-1012",
      "lastModified": "2024-11-21T06:39:51.467",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H\", \"baseScore\": 8.2, \"baseSeverity\": \"HIGH\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"LOW\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 4.2}]}",
      "published": "2022-08-05T16:15:11.370",
      "references": "[{\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2064604\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Issue Tracking\", \"Third Party Advisory\"]}, {\"url\": \"https://lore.kernel.org/lkml/20220427065233.2075-1-w%401wt.eu/T/\", \"source\": \"secalert@redhat.com\"}, {\"url\": \"https://security.netapp.com/advisory/ntap-20221020-0006/\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2064604\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Issue Tracking\", \"Third Party Advisory\"]}, {\"url\": \"https://lore.kernel.org/lkml/20220427065233.2075-1-w%401wt.eu/T/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://security.netapp.com/advisory/ntap-20221020-0006/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}]",
      "sourceIdentifier": "secalert@redhat.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"secalert@redhat.com\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-401\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-401\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-1012\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2022-08-05T16:15:11.370\",\"lastModified\":\"2026-06-17T04:21:38.680\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A memory leak problem was found in the TCP source port generation algorithm in net/ipv4/tcp.c due to the small table perturb size. This flaw may allow an attacker to information leak and may cause a denial of service problem.\"},{\"lang\":\"es\",\"value\":\"Se ha encontrado un problema de p\u00e9rdida de memoria en el algoritmo de generaci\u00f3n de puertos de origen TCP en el archivo net/ipv4/tcp.c debido al peque\u00f1o tama\u00f1o de la tabla de perturbaci\u00f3n. Este fallo puede permitir a un atacante un filtrado de informaci\u00f3n y puede causar un problema de denegaci\u00f3n de servicio\"}],\"affected\":[{\"source\":\"secalert@redhat.com\",\"affectedData\":[{\"vendor\":\"n/a\",\"product\":\"Kernel\",\"versions\":[{\"version\":\"Linux kernel version prior to 5.18-rc6\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H\",\"baseScore\":8.2,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":4.2}]},\"weaknesses\":[{\"source\":\"secalert@redhat.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-401\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-401\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"5.18\",\"matchCriteriaId\":\"FE93544F-B946-47CF-9697-FBF3484FCB92\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.18:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"0384FA0A-DE99-48D7-84E3-46ED0C3B5E03\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"6AD94161-84BB-42E6-9882-4FC0C42E9FC1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.18:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"7AB06DDF-3C2B-416D-B448-E990D8FF67A9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.18:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"EAE6C6C5-4D21-4C04-897C-70CBBB3D7B91\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.18:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"DA5F085D-52F3-4EE2-8353-455D1A6FE073\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.18:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"D6EE5B78-0D83-4715-893C-ABD69B49E7FC\"}]}]}],\"references\":[{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=2064604\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://lore.kernel.org/lkml/20220427065233.2075-1-w%401wt.eu/T/\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20221020-0006/\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=2064604\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Third Party Advisory\"]},{\"url\":\"https://lore.kernel.org/lkml/20220427065233.2075-1-w%401wt.eu/T/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20221020-0006/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T05:23:54+00:00",
      "cve": "CVE-2022-1012",
      "id": "CVE-2022-1012",
      "initial_release_date": "2022-05-02T04:30:00+00:00",
      "product_status:fixed": "711",
      "product_status:known_not_affected": "48",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Small table perturb size in the TCP source port generation algorithm can lead to information leak",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-1012.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-01T17:12:24Z",
      "cve": "CVE-2022-1012",
      "id": "CVE-2022-1012",
      "initial_release_date": "2023-02-15T03:34:30Z",
      "product_status:known_affected": "225",
      "product_status:recommended": "1350",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-1012",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-1012.json",
      "version": "45"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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

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.