FKIE_CVE-2026-45917

Vulnerability from fkie_nvd - Published: 2026-05-27 14:17 - Updated: 2026-05-27 14:48
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/024eb0bd19f507e6e7f0c7a7e5506d66b5dc1d3e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/64af43033503458c46023e56d6ae7bb0f824b55f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8fde939b0206afc1d5846217a01a16b9bc8c7896
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bae53b3baf2ff2f45f9205c438818fc055601a54
Impacted products
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{
  "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."
    }
  ],
  "id": "CVE-2026-45917",
  "lastModified": "2026-05-27T14:48:03.013",
  "metrics": {},
  "published": "2026-05-27T14:17:06.587",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/024eb0bd19f507e6e7f0c7a7e5506d66b5dc1d3e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/64af43033503458c46023e56d6ae7bb0f824b55f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8fde939b0206afc1d5846217a01a16b9bc8c7896"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bae53b3baf2ff2f45f9205c438818fc055601a54"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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