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

FKIE_CVE-2026-62437

Vulnerability from fkie_nvd - Published: 2026-09-08 13:17 - Updated: 2026-09-08 19:20
Severity
Summary
When guests are terminated, various pieces of cleanup need carrying out. The cleaning up of PCI devices which were assigned to guests, and the associated removal of tracking structures for IRQs used by the devices occurs relatively early in the process. Unfortunately after that point the guest about to be terminated could cause its device model (DM) to re-establish such tracking structures, by having it bind one or more IRQs anew. While some of those tracking structures would still be cleaned up later on, at least one would not be.
References
security@xen.orghttps://xenbits.xenproject.org/xsa/advisory-509.html
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2026/09/08/6
af854a3a-2127-422b-91ae-364da2661108http://xenbits.xen.org/xsa/advisory-509.html
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unknown",
          "product": "Xen",
          "vendor": "Xen",
          "versions": [
            {
              "status": "unknown",
              "version": "consult Xen advisory XSA-509"
            }
          ]
        }
      ],
      "source": "security@xen.org"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "When guests are terminated, various pieces of cleanup need carrying out.\nThe cleaning up of PCI devices which were assigned to guests, and the\nassociated removal of tracking structures for IRQs used by the devices\noccurs relatively early in the process.  Unfortunately after that point\nthe guest about to be terminated could cause its device model (DM) to\nre-establish such tracking structures, by having it bind one or more IRQs\nanew.  While some of those tracking structures would still be cleaned up\nlater on, at least one would not be."
    }
  ],
  "id": "CVE-2026-62437",
  "lastModified": "2026-09-08T19:20:25.117",
  "metrics": {},
  "published": "2026-09-08T13:17:19.623",
  "references": [
    {
      "source": "security@xen.org",
      "url": "https://xenbits.xenproject.org/xsa/advisory-509.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2026/09/08/6"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://xenbits.xen.org/xsa/advisory-509.html"
    }
  ],
  "sourceIdentifier": "security@xen.org",
  "vulnStatus": "Awaiting Analysis"
}



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.