{"id":"CVE-2026-72283","summary":"KVM: x86: Nullify irqfd-\u003eproducer if updating IRTE for bypass fails","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: x86: Nullify irqfd-\u003eproducer if updating IRTE for bypass fails\n\nNullify irqfd-\u003eproducer 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]","modified":"2026-08-18T03:56:40.780818175Z","published":"2026-08-15T05:55:06.959Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72283.json","cna_assigner":"Linux"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"77e1b8332d1d7aa786f7515e9bd4055def6a1e06"},{"fixed":"d1379888cc4230bac647ec24ab83306afbd03e88"},{"fixed":"d5560b6569cd05ba72c6b33427fbabc6ec46b8cf"},{"fixed":"ed446e8aa894883c08892cfee69782fdf8f6c3ca"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72283.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.17.0"},{"fixed":"6.18.40"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72283.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"}]}