{"id":"CVE-2026-43097","summary":"PCI: hv: Fix double ida_free in hv_pci_probe error path","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: hv: Fix double ida_free in hv_pci_probe error path\n\nIf hv_pci_probe() fails after storing the domain number in\nhbus-\u003ebridge-\u003edomain_nr, there is a call to free this domain_nr via\npci_bus_release_emul_domain_nr(), however, during cleanup, the bridge\nrelease callback pci_release_host_bridge_dev() also frees the domain_nr\ncausing ida_free to be called on same ID twice and triggering following\nwarning:\n\n  ida_free called for id=28971 which is not allocated.\n  WARNING: lib/idr.c:594 at ida_free+0xdf/0x160, CPU#0: kworker/0:2/198\n  Call Trace:\n   pci_bus_release_emul_domain_nr+0x17/0x20\n   pci_release_host_bridge_dev+0x4b/0x60\n   device_release+0x3b/0xa0\n   kobject_put+0x8e/0x220\n   devm_pci_alloc_host_bridge_release+0xe/0x20\n   devres_release_all+0x9a/0xd0\n   device_unbind_cleanup+0x12/0xa0\n   really_probe+0x1c5/0x3f0\n   vmbus_add_channel_work+0x135/0x1a0\n\nFix this by letting pci core handle the free domain_nr and remove\nthe explicit free called in pci-hyperv driver.","modified":"2026-07-08T08:02:14.811822335Z","published":"2026-05-06T07:40:28.157Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43097.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/21bc8e0ba5c2a081b0a2808c976d4c9dbddf1e48"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b6422dff0e518245019233432b6bccfc30b73e2f"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43097.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43097"},{"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":"bcce8c74f1ce1e2731ac0261287897e3768767d8"},{"fixed":"21bc8e0ba5c2a081b0a2808c976d4c9dbddf1e48"},{"fixed":"b6422dff0e518245019233432b6bccfc30b73e2f"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43097.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.14"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43097.json"}}],"schema_version":"1.7.5"}