← Back to CVE Explorer

CVE-2026-45917

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: ipvs: do not keep dest_dst if dev is going down There is race between the netdev notifier ip_vs_dst_event() and the code that caches dst with dev that is going down. As the FIB can be notified for the closed device after our handler finishes, it is possible valid route to be returned and cached resuling in a leaked dev reference until the dest is not removed. To prevent new dest_dst to be attached to dest just after the handler dropped the old one, add a netif_running() check to make sure the notifier handler is not currently running for device that is closing.

Severity
MEDIUM
CVSS score
5.5 (v3.1)
Vulnerability status
Undergoing Analysis
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-05-27 14:17:06.587000
Last modified
2026-10-30 13:18:53.223000
View original CVE JSON 
{
  "id": "CVE-2026-45917",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-05-27T14:17:06.587",
  "lastModified": "2026-10-30T13:18:53.223",
  "vulnStatus": "Undergoing Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipvs: do not keep dest_dst if dev is going down\n\nThere is race between the netdev notifier ip_vs_dst_event()\nand the code that caches dst with dev that is going down.\nAs the FIB can be notified for the closed device after our\nhandler finishes, it is possible valid route to be returned\nand cached resuling in a leaked dev reference until the dest\nis not removed.\n\nTo prevent new dest_dst to be attached to dest just after the\nhandler dropped the old one, add a netif_running() check\nto make sure the notifier handler is not currently running\nfor device that is closing."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "net/netfilter/ipvs/ip_vs_xmit.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "7a4f0761fce32ff4918a7c23b08db564ad33092d",
              "lessThan": "0b60fb44247eab81e7a9490c38ca62c7120eec75",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "7a4f0761fce32ff4918a7c23b08db564ad33092d",
              "lessThan": "11d35b11013442576f35fd9e8a8fc16155101906",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "7a4f0761fce32ff4918a7c23b08db564ad33092d",
              "lessThan": "64af43033503458c46023e56d6ae7bb0f824b55f",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "7a4f0761fce32ff4918a7c23b08db564ad33092d",
              "lessThan": "bae53b3baf2ff2f45f9205c438818fc055601a54",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "7a4f0761fce32ff4918a7c23b08db564ad33092d",
              "lessThan": "024eb0bd19f507e6e7f0c7a7e5506d66b5dc1d3e",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "7a4f0761fce32ff4918a7c23b08db564ad33092d",
              "lessThan": "8fde939b0206afc1d5846217a01a16b9bc8c7896",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "net/netfilter/ipvs/ip_vs_xmit.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "2.6.39",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "2.6.39",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.191",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.160",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.75",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.14",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.19.4",
              "lessThanOrEqual": "6.19.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.0",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "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": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "2.6.39.1",
              "versionEndExcluding": "6.12.75",
              "matchCriteriaId": "D93533BF-AF3F-4AE4-84CB-511FD5BAD75D"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "6.13",
              "versionEndExcluding": "6.18.14",
              "matchCriteriaId": "BF463CB7-1F58-4607-B847-77ED23E4B9B7"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "6.19",
              "versionEndExcluding": "6.19.4",
              "matchCriteriaId": "672A3E79-EC03-479D-8503-361DFBDC8092"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:2.6.39:-:*:*:*:*:*:*",
              "matchCriteriaId": "6691E95C-E563-4730-BC6E-5B1F208DF350"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/024eb0bd19f507e6e7f0c7a7e5506d66b5dc1d3e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/0b60fb44247eab81e7a9490c38ca62c7120eec75",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/11d35b11013442576f35fd9e8a8fc16155101906",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/64af43033503458c46023e56d6ae7bb0f824b55f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/8fde939b0206afc1d5846217a01a16b9bc8c7896",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/bae53b3baf2ff2f45f9205c438818fc055601a54",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    }
  ]
}