GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2022-49183 (GCVE-0-2022-49183)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:55 – Updated: 2026-06-01 16:03
VLAI
Title
net/sched: act_ct: fix ref leak when switching zones
Summary
In the Linux kernel, the following vulnerability has been resolved: net/sched: act_ct: fix ref leak when switching zones When switching zones or network namespaces without doing a ct clear in between, it is now leaking a reference to the old ct entry. That's because tcf_ct_skb_nfct_cached() returns false and tcf_ct_flow_table_lookup() may simply overwrite it. The fix is to, as the ct entry is not reusable, free it already at tcf_ct_skb_nfct_cached().
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:47 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 0fc1847359964e95e521cf2bb2b10f8e33dd0970 , < 9222a08be539cbb7a8e0d46cbc7ab9e4db273eb8 (git)
Affected: a95ea90deb3071c1ded77a05e91cfebc5238d908 , < bcbf4e5c3b5b373cd61528392dd1ec8e9c0fd33d (git)
Affected: e9408de00e5ecd0dbe91cf061c7da23711c4febb , < 4bb42d73def9411e5cad885b9811987d72431df1 (git)
Affected: 2f131de361f6d0eaff17db26efdb844c178432f8 , < b24793a37d91aacad7cb9893b226a7924a89636a (git)
Affected: 2f131de361f6d0eaff17db26efdb844c178432f8 , < bcb74e132a76ce0502bb33d5b65533a4ed72d159 (git)
Affected: 5.10.103 , < 5.10.258 (semver)
Affected: 5.15.26 , < 5.15.33 (semver)
Affected: 5.16.12 , < 5.16.19 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 5.17
Unaffected: 0 , < 5.17 (semver)
Unaffected: 5.10.258 , ≤ 5.10.* (semver)
Unaffected: 5.15.33 , ≤ 5.15.* (semver)
Unaffected: 5.16.19 , ≤ 5.16.* (semver)
Unaffected: 5.17.2 , ≤ 5.17.* (semver)
Unaffected: 5.18 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "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"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2022-49183",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T19:47:32.813819Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "description": "CWE-noinfo Not enough information",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-01T19:56:59.861Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/sched/act_ct.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9222a08be539cbb7a8e0d46cbc7ab9e4db273eb8",
              "status": "affected",
              "version": "0fc1847359964e95e521cf2bb2b10f8e33dd0970",
              "versionType": "git"
            },
            {
              "lessThan": "bcbf4e5c3b5b373cd61528392dd1ec8e9c0fd33d",
              "status": "affected",
              "version": "a95ea90deb3071c1ded77a05e91cfebc5238d908",
              "versionType": "git"
            },
            {
              "lessThan": "4bb42d73def9411e5cad885b9811987d72431df1",
              "status": "affected",
              "version": "e9408de00e5ecd0dbe91cf061c7da23711c4febb",
              "versionType": "git"
            },
            {
              "lessThan": "b24793a37d91aacad7cb9893b226a7924a89636a",
              "status": "affected",
              "version": "2f131de361f6d0eaff17db26efdb844c178432f8",
              "versionType": "git"
            },
            {
              "lessThan": "bcb74e132a76ce0502bb33d5b65533a4ed72d159",
              "status": "affected",
              "version": "2f131de361f6d0eaff17db26efdb844c178432f8",
              "versionType": "git"
            },
            {
              "lessThan": "5.10.258",
              "status": "affected",
              "version": "5.10.103",
              "versionType": "semver"
            },
            {
              "lessThan": "5.15.33",
              "status": "affected",
              "version": "5.15.26",
              "versionType": "semver"
            },
            {
              "lessThan": "5.16.19",
              "status": "affected",
              "version": "5.16.12",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/sched/act_ct.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.17"
            },
            {
              "lessThan": "5.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.258",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.16.*",
              "status": "unaffected",
              "version": "5.16.19",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.17.*",
              "status": "unaffected",
              "version": "5.17.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.258",
                  "versionStartIncluding": "5.10.103",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.33",
                  "versionStartIncluding": "5.15.26",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.16.19",
                  "versionStartIncluding": "5.16.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.17.2",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_ct: fix ref leak when switching zones\n\nWhen switching zones or network namespaces without doing a ct clear in\nbetween, it is now leaking a reference to the old ct entry. That\u0027s\nbecause tcf_ct_skb_nfct_cached() returns false and\ntcf_ct_flow_table_lookup() may simply overwrite it.\n\nThe fix is to, as the ct entry is not reusable, free it already at\ntcf_ct_skb_nfct_cached()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-01T16:03:48.869Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9222a08be539cbb7a8e0d46cbc7ab9e4db273eb8"
        },
        {
          "url": "https://git.kernel.org/stable/c/bcbf4e5c3b5b373cd61528392dd1ec8e9c0fd33d"
        },
        {
          "url": "https://git.kernel.org/stable/c/4bb42d73def9411e5cad885b9811987d72431df1"
        },
        {
          "url": "https://git.kernel.org/stable/c/b24793a37d91aacad7cb9893b226a7924a89636a"
        },
        {
          "url": "https://git.kernel.org/stable/c/bcb74e132a76ce0502bb33d5b65533a4ed72d159"
        }
      ],
      "title": "net/sched: act_ct: fix ref leak when switching zones",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49183",
    "datePublished": "2025-02-26T01:55:34.041Z",
    "dateReserved": "2025-02-26T01:49:39.283Z",
    "dateUpdated": "2026-06-01T16:03:48.869Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-49183",
      "date": "2026-09-17",
      "epss": "0.00265",
      "percentile": "0.18625"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49183\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:00:55.427\",\"lastModified\":\"2026-06-17T05:17:18.390\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/sched: act_ct: fix ref leak when switching zones\\n\\nWhen switching zones or network namespaces without doing a ct clear in\\nbetween, it is now leaking a reference to the old ct entry. That\u0027s\\nbecause tcf_ct_skb_nfct_cached() returns false and\\ntcf_ct_flow_table_lookup() may simply overwrite it.\\n\\nThe fix is to, as the ct entry is not reusable, free it already at\\ntcf_ct_skb_nfct_cached().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/sched: act_ct: se corrige la fuga de referencia al cambiar de zona Al cambiar de zona o de espacio de nombres de red sin hacer una limpieza de ct en el medio, ahora se filtra una referencia a la entrada ct anterior. Esto se debe a que tcf_ct_skb_nfct_cached() devuelve falso y tcf_ct_flow_table_lookup() puede simplemente sobrescribirlo. La soluci\u00f3n es, como la entrada ct no es reutilizable, liberarla ya en tcf_ct_skb_nfct_cached().\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/sched/act_ct.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"0fc1847359964e95e521cf2bb2b10f8e33dd0970\",\"lessThan\":\"9222a08be539cbb7a8e0d46cbc7ab9e4db273eb8\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"a95ea90deb3071c1ded77a05e91cfebc5238d908\",\"lessThan\":\"bcbf4e5c3b5b373cd61528392dd1ec8e9c0fd33d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e9408de00e5ecd0dbe91cf061c7da23711c4febb\",\"lessThan\":\"4bb42d73def9411e5cad885b9811987d72431df1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2f131de361f6d0eaff17db26efdb844c178432f8\",\"lessThan\":\"b24793a37d91aacad7cb9893b226a7924a89636a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2f131de361f6d0eaff17db26efdb844c178432f8\",\"lessThan\":\"bcb74e132a76ce0502bb33d5b65533a4ed72d159\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5.10.103\",\"lessThan\":\"5.10.258\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.15.26\",\"lessThan\":\"5.15.33\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.16.12\",\"lessThan\":\"5.16.19\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/sched/act_ct.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.17\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.17\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.258\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.33\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.16.19\",\"lessThanOrEqual\":\"5.16.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.17.2\",\"lessThanOrEqual\":\"5.17.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.18\",\"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},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"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}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-10-01T19:47:32.813819Z\",\"id\":\"CVE-2022-49183\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-Other\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.10.103\",\"versionEndExcluding\":\"5.11\",\"matchCriteriaId\":\"C6C1F51A-A817-4CF1-9578-38216E3CF649\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.15.26\",\"versionEndExcluding\":\"5.15.33\",\"matchCriteriaId\":\"806417E1-B697-4476-94C3-EBC38748D945\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16.12\",\"versionEndIncluding\":\"5.16.19\",\"matchCriteriaId\":\"108A78FE-B91E-44D1-8EBD-D9C4D8A649EC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.17\",\"versionEndIncluding\":\"5.17.2\",\"matchCriteriaId\":\"FD8C9932-9223-472D-A70C-42BCD470680A\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/4bb42d73def9411e5cad885b9811987d72431df1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9222a08be539cbb7a8e0d46cbc7ab9e4db273eb8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b24793a37d91aacad7cb9893b226a7924a89636a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/bcb74e132a76ce0502bb33d5b65533a4ed72d159\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/bcbf4e5c3b5b373cd61528392dd1ec8e9c0fd33d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T21:00:40+00:00",
      "cve": "CVE-2022-49183",
      "id": "CVE-2022-49183",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "48",
      "product_status:known_not_affected": "226",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net/sched: act_ct: fix ref leak when switching zones",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49183.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-49183\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T19:47:32.813819Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"description\": \"CWE-noinfo Not enough information\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T16:08:25.936Z\"}}], \"cna\": {\"title\": \"net/sched: act_ct: fix ref leak when switching zones\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"0fc1847359964e95e521cf2bb2b10f8e33dd0970\", \"lessThan\": \"9222a08be539cbb7a8e0d46cbc7ab9e4db273eb8\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a95ea90deb3071c1ded77a05e91cfebc5238d908\", \"lessThan\": \"bcbf4e5c3b5b373cd61528392dd1ec8e9c0fd33d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e9408de00e5ecd0dbe91cf061c7da23711c4febb\", \"lessThan\": \"4bb42d73def9411e5cad885b9811987d72431df1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2f131de361f6d0eaff17db26efdb844c178432f8\", \"lessThan\": \"b24793a37d91aacad7cb9893b226a7924a89636a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2f131de361f6d0eaff17db26efdb844c178432f8\", \"lessThan\": \"bcb74e132a76ce0502bb33d5b65533a4ed72d159\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5.10.103\", \"lessThan\": \"5.10.258\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"5.15.26\", \"lessThan\": \"5.15.33\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"5.16.12\", \"lessThan\": \"5.16.19\", \"versionType\": \"semver\"}], \"programFiles\": [\"net/sched/act_ct.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.17\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.17\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.258\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.33\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.16.19\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.16.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.17.*\"}, {\"status\": \"unaffected\", \"version\": \"5.18\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/sched/act_ct.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/9222a08be539cbb7a8e0d46cbc7ab9e4db273eb8\"}, {\"url\": \"https://git.kernel.org/stable/c/bcbf4e5c3b5b373cd61528392dd1ec8e9c0fd33d\"}, {\"url\": \"https://git.kernel.org/stable/c/4bb42d73def9411e5cad885b9811987d72431df1\"}, {\"url\": \"https://git.kernel.org/stable/c/b24793a37d91aacad7cb9893b226a7924a89636a\"}, {\"url\": \"https://git.kernel.org/stable/c/bcb74e132a76ce0502bb33d5b65533a4ed72d159\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/sched: act_ct: fix ref leak when switching zones\\n\\nWhen switching zones or network namespaces without doing a ct clear in\\nbetween, it is now leaking a reference to the old ct entry. That\u0027s\\nbecause tcf_ct_skb_nfct_cached() returns false and\\ntcf_ct_flow_table_lookup() may simply overwrite it.\\n\\nThe fix is to, as the ct entry is not reusable, free it already at\\ntcf_ct_skb_nfct_cached().\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.258\", \"versionStartIncluding\": \"5.10.103\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.33\", \"versionStartIncluding\": \"5.15.26\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16.19\", \"versionStartIncluding\": \"5.16.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17.2\", \"versionStartIncluding\": \"5.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.18\", \"versionStartIncluding\": \"5.17\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-06-01T16:03:48.869Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49183\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-01T16:03:48.869Z\", \"dateReserved\": \"2025-02-26T01:49:39.283Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-02-26T01:55:34.041Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.