CVE-2026-45917 (GCVE-0-2026-45917)
Vulnerability from cvelistv5
Published
2026-05-27 12:17
Modified
2026-05-27 12:17
Severity ?
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 7a4f0761fce32ff4918a7c23b08db564ad33092d
Version: 7a4f0761fce32ff4918a7c23b08db564ad33092d
Version: 7a4f0761fce32ff4918a7c23b08db564ad33092d
Version: 7a4f0761fce32ff4918a7c23b08db564ad33092d
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/ipvs/ip_vs_xmit.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
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        {
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          "product": "Linux",
          "programFiles": [
            "net/netfilter/ipvs/ip_vs_xmit.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.39"
            },
            {
              "lessThan": "2.6.39",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
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              "version": "6.18.14",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "6.19.*",
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              "version": "6.19.4",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.75",
                  "versionStartIncluding": "2.6.39",
                  "vulnerable": true
                },
                {
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                {
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T12:17:33.337Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/64af43033503458c46023e56d6ae7bb0f824b55f"
        },
        {
          "url": "https://git.kernel.org/stable/c/bae53b3baf2ff2f45f9205c438818fc055601a54"
        },
        {
          "url": "https://git.kernel.org/stable/c/024eb0bd19f507e6e7f0c7a7e5506d66b5dc1d3e"
        },
        {
          "url": "https://git.kernel.org/stable/c/8fde939b0206afc1d5846217a01a16b9bc8c7896"
        }
      ],
      "title": "ipvs: do not keep dest_dst if dev is going down",
      "x_generator": {
        "engine": "bippy-1.2.0"
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-45917",
    "datePublished": "2026-05-27T12:17:33.337Z",
    "dateReserved": "2026-05-13T15:03:33.085Z",
    "dateUpdated": "2026-05-27T12:17:33.337Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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