CVE-2022-49561 (GCVE-0-2022-49561)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:14 – Updated: 2026-08-05 08:55
VLAI
Title
netfilter: conntrack: re-fetch conntrack after insertion
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: re-fetch conntrack after insertion In case the conntrack is clashing, insertion can free skb->_nfct and set skb->_nfct to the already-confirmed entry. This wasn't found before because the conntrack entry and the extension space used to free'd after an rcu grace period, plus the race needs events enabled to trigger.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 71d8c47fc653711c41bc3282e5b0e605b3727956 , < e97222b785e70e8973281666d709baad6523d8af (git)
Affected: 71d8c47fc653711c41bc3282e5b0e605b3727956 , < 92a999d1963eed0df666284e20055136ceabd12f (git)
Affected: 71d8c47fc653711c41bc3282e5b0e605b3727956 , < b16bb373988da3ceb0308381634117e18b6ec60d (git)
Affected: 71d8c47fc653711c41bc3282e5b0e605b3727956 , < 91a36ec160ec1a0c8f5352b772dffcbb0b6023e3 (git)
Affected: 71d8c47fc653711c41bc3282e5b0e605b3727956 , < 01989d7eebb61c99bd4b88ebc8e261bd2f02caed (git)
Affected: 71d8c47fc653711c41bc3282e5b0e605b3727956 , < 04f9e9104c969d8ce10a4a43634f641ed082092d (git)
Affected: 71d8c47fc653711c41bc3282e5b0e605b3727956 , < 04e4a11dc723c52db7a36dc58f0d69ce6426f8f0 (git)
Affected: 71d8c47fc653711c41bc3282e5b0e605b3727956 , < 56b14ecec97f39118bf85c9ac2438c5a949509ed (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.7
Unaffected: 0 , < 4.7 (semver)
Unaffected: 4.14.282 , ≤ 4.14.* (semver)
Unaffected: 4.19.246 , ≤ 4.19.* (semver)
Unaffected: 5.4.197 , ≤ 5.4.* (semver)
Unaffected: 5.10.120 , ≤ 5.10.* (semver)
Unaffected: 5.15.45 , ≤ 5.15.* (semver)
Unaffected: 5.17.13 , ≤ 5.17.* (semver)
Unaffected: 5.18.2 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/net/netfilter/nf_conntrack_core.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e97222b785e70e8973281666d709baad6523d8af",
              "status": "affected",
              "version": "71d8c47fc653711c41bc3282e5b0e605b3727956",
              "versionType": "git"
            },
            {
              "lessThan": "92a999d1963eed0df666284e20055136ceabd12f",
              "status": "affected",
              "version": "71d8c47fc653711c41bc3282e5b0e605b3727956",
              "versionType": "git"
            },
            {
              "lessThan": "b16bb373988da3ceb0308381634117e18b6ec60d",
              "status": "affected",
              "version": "71d8c47fc653711c41bc3282e5b0e605b3727956",
              "versionType": "git"
            },
            {
              "lessThan": "91a36ec160ec1a0c8f5352b772dffcbb0b6023e3",
              "status": "affected",
              "version": "71d8c47fc653711c41bc3282e5b0e605b3727956",
              "versionType": "git"
            },
            {
              "lessThan": "01989d7eebb61c99bd4b88ebc8e261bd2f02caed",
              "status": "affected",
              "version": "71d8c47fc653711c41bc3282e5b0e605b3727956",
              "versionType": "git"
            },
            {
              "lessThan": "04f9e9104c969d8ce10a4a43634f641ed082092d",
              "status": "affected",
              "version": "71d8c47fc653711c41bc3282e5b0e605b3727956",
              "versionType": "git"
            },
            {
              "lessThan": "04e4a11dc723c52db7a36dc58f0d69ce6426f8f0",
              "status": "affected",
              "version": "71d8c47fc653711c41bc3282e5b0e605b3727956",
              "versionType": "git"
            },
            {
              "lessThan": "56b14ecec97f39118bf85c9ac2438c5a949509ed",
              "status": "affected",
              "version": "71d8c47fc653711c41bc3282e5b0e605b3727956",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "include/net/netfilter/nf_conntrack_core.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.7"
            },
            {
              "lessThan": "4.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.282",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.246",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.197",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.45",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.17.*",
              "status": "unaffected",
              "version": "5.17.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.18.*",
              "status": "unaffected",
              "version": "5.18.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.282",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.246",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.197",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.120",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.45",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.17.13",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18.2",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: conntrack: re-fetch conntrack after insertion\n\nIn case the conntrack is clashing, insertion can free skb-\u003e_nfct and\nset skb-\u003e_nfct to the already-confirmed entry.\n\nThis wasn\u0027t found before because the conntrack entry and the extension\nspace used to free\u0027d after an rcu grace period, plus the race needs\nevents enabled to trigger."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The UAF sits in nf_conntrack_confirm(), invoked from nf_confirm on NF_INET_LOCAL_IN and NF_INET_POST_ROUTING for packets traversing conntrack. On firewalls, NAT gateways, Docker/K8s hosts, and internet-facing servers with stateful filtering, a remote peer\u2019s packets reach this path with no local login.\nAC:L - The insertion clash is triggered by concurrent UDP (allow_clash) flows that the attacker can send themselves, so they control both sides of the race. Conntrack event/ecache support is common in real deployments; it is not a rare uncontrollable condition.\nPR:N - Exploitation uses unauthenticated network packets against an already-active conntrack data path. No credentials or CAP_NET_ADMIN are required on the attacker side once the victim system is tracking connections.\nUI:N - The attacker only needs to send crafted concurrent packets; no victim user action such as mounting a device or opening a file is required.\nS:U - Impact is memory corruption within the host kernel\u2019s conntrack authority. This is standard local kernel compromise, not a VM/IOMMU/sandbox boundary crossing.\nC:H - Clash resolution can nf_ct_put()/free the loser ct and immediately kfree its extension, then nf_ct_ecache_exist/nf_ct_deliver_cached_events reuse that pointer\u2014a use-after-free that can yield arbitrary read primitives.\nI:H - The same UAF on the nf_conn/extension heap is exploitable for heap reuse and arbitrary write/control-flow hijacking under standard kernel UAF exploitation.\nA:H - Dereferencing the freed conntrack/ecache state can oops/panic the kernel, and UAFs are treated as high availability impact even when not fully turned into code execution."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:55:45.099Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e97222b785e70e8973281666d709baad6523d8af"
        },
        {
          "url": "https://git.kernel.org/stable/c/92a999d1963eed0df666284e20055136ceabd12f"
        },
        {
          "url": "https://git.kernel.org/stable/c/b16bb373988da3ceb0308381634117e18b6ec60d"
        },
        {
          "url": "https://git.kernel.org/stable/c/91a36ec160ec1a0c8f5352b772dffcbb0b6023e3"
        },
        {
          "url": "https://git.kernel.org/stable/c/01989d7eebb61c99bd4b88ebc8e261bd2f02caed"
        },
        {
          "url": "https://git.kernel.org/stable/c/04f9e9104c969d8ce10a4a43634f641ed082092d"
        },
        {
          "url": "https://git.kernel.org/stable/c/04e4a11dc723c52db7a36dc58f0d69ce6426f8f0"
        },
        {
          "url": "https://git.kernel.org/stable/c/56b14ecec97f39118bf85c9ac2438c5a949509ed"
        }
      ],
      "title": "netfilter: conntrack: re-fetch conntrack after insertion",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49561",
    "datePublished": "2025-02-26T02:14:06.030Z",
    "dateReserved": "2025-02-26T02:08:31.591Z",
    "dateUpdated": "2026-08-05T08:55:45.099Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-49561",
      "date": "2026-10-30",
      "epss": "0.0082",
      "percentile": "0.57229"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "include/net/netfilter/nf_conntrack_core.h"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "e97222b785e70e8973281666d709baad6523d8af",
                    "status": "affected",
                    "version": "71d8c47fc653711c41bc3282e5b0e605b3727956",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "92a999d1963eed0df666284e20055136ceabd12f",
                    "status": "affected",
                    "version": "71d8c47fc653711c41bc3282e5b0e605b3727956",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "b16bb373988da3ceb0308381634117e18b6ec60d",
                    "status": "affected",
                    "version": "71d8c47fc653711c41bc3282e5b0e605b3727956",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "91a36ec160ec1a0c8f5352b772dffcbb0b6023e3",
                    "status": "affected",
                    "version": "71d8c47fc653711c41bc3282e5b0e605b3727956",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "01989d7eebb61c99bd4b88ebc8e261bd2f02caed",
                    "status": "affected",
                    "version": "71d8c47fc653711c41bc3282e5b0e605b3727956",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "04f9e9104c969d8ce10a4a43634f641ed082092d",
                    "status": "affected",
                    "version": "71d8c47fc653711c41bc3282e5b0e605b3727956",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "04e4a11dc723c52db7a36dc58f0d69ce6426f8f0",
                    "status": "affected",
                    "version": "71d8c47fc653711c41bc3282e5b0e605b3727956",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "56b14ecec97f39118bf85c9ac2438c5a949509ed",
                    "status": "affected",
                    "version": "71d8c47fc653711c41bc3282e5b0e605b3727956",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "include/net/netfilter/nf_conntrack_core.h"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "4.7"
                  },
                  {
                    "lessThan": "4.7",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "4.14.*",
                    "status": "unaffected",
                    "version": "4.14.282",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "4.19.*",
                    "status": "unaffected",
                    "version": "4.19.246",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.4.*",
                    "status": "unaffected",
                    "version": "5.4.197",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.120",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.45",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.17.*",
                    "status": "unaffected",
                    "version": "5.17.13",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.18.*",
                    "status": "unaffected",
                    "version": "5.18.2",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "5.19",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "897D9E70-5BA4-4E88-B774-C6A3B6B853EF",
                    "versionEndExcluding": "4.14.282",
                    "versionStartIncluding": "4.7",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "FEDF30DC-BB12-4C4C-A134-AA5D59D73C0C",
                    "versionEndExcluding": "4.19.246",
                    "versionStartIncluding": "4.15",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "F7FDD830-741D-44F7-A537-13755A4314DE",
                    "versionEndExcluding": "5.4.197",
                    "versionStartIncluding": "4.20",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "92818976-ECCC-4744-9287-E2CF4B2C4131",
                    "versionEndExcluding": "5.10.120",
                    "versionStartIncluding": "5.5",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "08D699AD-F4CE-4BDD-A97E-4997299C7712",
                    "versionEndExcluding": "5.15.45",
                    "versionStartIncluding": "5.11",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "192FC54B-5367-49D6-B410-0285F14665B1",
                    "versionEndExcluding": "5.17.13",
                    "versionStartIncluding": "5.16",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9FF255A1-64F4-4E31-AF44-C92FB8773BA2",
                    "versionEndExcluding": "5.18.2",
                    "versionStartIncluding": "5.18",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: conntrack: re-fetch conntrack after insertion\n\nIn case the conntrack is clashing, insertion can free skb-\u003e_nfct and\nset skb-\u003e_nfct to the already-confirmed entry.\n\nThis wasn\u0027t found before because the conntrack entry and the extension\nspace used to free\u0027d after an rcu grace period, plus the race needs\nevents enabled to trigger."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfilter: conntrack: volver a obtener conntrack despu\u00e9s de la inserci\u00f3n En caso de que conntrack est\u00e9 en conflicto, la inserci\u00f3n puede liberar skb-\u0026gt;_nfct y establecer skb-\u0026gt;_nfct en la entrada ya confirmada. Esto no se encontr\u00f3 antes porque la entrada conntrack y el espacio de extensi\u00f3n sol\u00edan liberarse despu\u00e9s de un per\u00edodo de gracia de rcu, adem\u00e1s de que la ejecuci\u00f3n necesita eventos habilitados para activarse."
          }
        ],
        "id": "CVE-2022-49561",
        "lastModified": "2026-08-04T10:17:51.783",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 9.8,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 5.9,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            },
            {
              "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": "2025-02-26T07:01:31.877",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/01989d7eebb61c99bd4b88ebc8e261bd2f02caed"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/04e4a11dc723c52db7a36dc58f0d69ce6426f8f0"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/04f9e9104c969d8ce10a4a43634f641ed082092d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/56b14ecec97f39118bf85c9ac2438c5a949509ed"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/91a36ec160ec1a0c8f5352b772dffcbb0b6023e3"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/92a999d1963eed0df666284e20055136ceabd12f"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/b16bb373988da3ceb0308381634117e18b6ec60d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/e97222b785e70e8973281666d709baad6523d8af"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-30T01:10:03+00:00",
      "cve": "CVE-2022-49561",
      "id": "CVE-2022-49561",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:fixed": "286",
      "product_status:known_affected": "80",
      "product_status:known_not_affected": "77",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: netfilter: conntrack: re-fetch conntrack after insertion",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49561.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-16T14:20:39Z",
      "cve": "CVE-2022-49561",
      "id": "CVE-2022-49561",
      "initial_release_date": "2025-02-27T03:04:59Z",
      "product_status:known_affected": "621",
      "product_status:known_not_affected": "209",
      "product_status:recommended": "68",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49561",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2025/cve-2022-49561.json",
      "version": "40"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Loading timeline…




    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.