CVE-2026-62437x86: DMs may cause mem leak by IRQ binding
Updated under an hour ago ()
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It affects Xen. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.5 MEDIUM (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
- Weakness (CWE)
- CWE-362
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- XEN
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 10, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Xen Xen xen:xen (from the name) | consult Xen advisory XSA-509 status unknown | CNA record |
References
- https://xenbits.xenproject.org/xsa/advisory-509.html
- http://www.openwall.com/lists/oss-security/2026/09/08/6
- http://xenbits.xen.org/xsa/advisory-509.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.