High 8.8Published Aug 15, 2026

CVE-2026-72283KVM: x86: Nullify irqfd->producer if updating IRTE for bypass fails

Updated under an hour ago (2026-10-19 09:40 UTC)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Nullify irqfd->producer if updating IRTE for bypass fails Nullify irqfd->producer if updating the IRTE for bypass fails, as leaving a dangling pointer will result in a use-after-free if the irqfd is reachable through KVM's routing, but the producer is freed separately. E.g. for VFIO PCI, the producer is embedded in struct "vfio_pci_irq_ctx" and freed when the vector is disabled, which can happen independent of routing updates. [sean: drop PPC change, massage changelog]

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Aug 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 77e1b8332d1d7aa786f7515e9bd4055def6a1e06 before d1379888cc4230bac647ec24ab83306afbd03e88; from 77e1b8332d1d7aa786f7515e9bd4055def6a1e06 before d5560b6569cd05ba72c6b33427fbabc6ec46b8cf; from 77e1b8332d1d7aa786f7515e9bd4055def6a1e06 before ed446e8aa894883c08892cfee69782fdf8f6c3ca	CNA record

References

https://git.kernel.org/stable/c/d1379888cc4230bac647ec24ab83306afbd03e88
https://git.kernel.org/stable/c/d5560b6569cd05ba72c6b33427fbabc6ec46b8cf
https://git.kernel.org/stable/c/ed446e8aa894883c08892cfee69782fdf8f6c3ca

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.