CVE-2026-72283
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]
Affected versions
Linux kernel versions
6.17
and later are affected. Fixed in
6.18.40,
7.1.5,
7.2-rc4
and their respective stable series.
References
3 totalFrequently asked questions
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What is CVE-2026-72283?
CVE-2026-72283 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.17 onward and has been patched in 6.18.40, 7.1.5 and 7.2-rc4. CVE-2026-72283 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-72283?
Yes. CVE-2026-72283 has been patched. Fixed versions include 6.18.40, 7.1.5 and 7.2-rc4. If you are running Linux kernel 6.17 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-72283 actively exploited?
No. CVE-2026-72283 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.