{"id":"CVE-2026-72283","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-72283","summary":"KVM: x86: Nullify irqfd->producer if updating IRTE for bypass fails","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: x86: Nullify irqfd->producer if updating IRTE for bypass fails\n\nNullify irqfd->producer if updating the IRTE for bypass fails, as leaving a\ndangling pointer will result in a use-after-free if the irqfd is reachable\nthrough KVM's routing, but the producer is freed separately.  E.g. for VFIO\nPCI, the producer is embedded in struct \"vfio_pci_irq_ctx\" and freed when\nthe vector is disabled, which can happen independent of routing updates.\n\n[sean: drop PPC change, massage changelog]","published":"2026-08-15T05:55:06.959Z","modified":"2026-08-16T03:48:39.638430954Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.18.40"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/d1379888cc4230bac647ec24ab83306afbd03e88"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d5560b6569cd05ba72c6b33427fbabc6ec46b8cf"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ed446e8aa894883c08892cfee69782fdf8f6c3ca"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72283.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72283"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-16T03:48:39.638430954Z"}}