{"api_version":"1","generated_at":"2026-05-06T10:59:30+00:00","cve":"CVE-2026-43097","urls":{"html":"https://cve.report/CVE-2026-43097","api":"https://cve.report/api/cve/CVE-2026-43097.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43097","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43097"},"summary":{"title":"PCI: hv: Fix double ida_free in hv_pci_probe error path","description":"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->bridge->domain_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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-06 10:16:23","updated_at":"2026-05-06 10:16:23"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/b6422dff0e518245019233432b6bccfc30b73e2f","name":"https://git.kernel.org/stable/c/b6422dff0e518245019233432b6bccfc30b73e2f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/21bc8e0ba5c2a081b0a2808c976d4c9dbddf1e48","name":"https://git.kernel.org/stable/c/21bc8e0ba5c2a081b0a2808c976d4c9dbddf1e48","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43097","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43097","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bcce8c74f1ce1e2731ac0261287897e3768767d8 21bc8e0ba5c2a081b0a2808c976d4c9dbddf1e48 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bcce8c74f1ce1e2731ac0261287897e3768767d8 b6422dff0e518245019233432b6bccfc30b73e2f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.19","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.14 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/pci/controller/pci-hyperv.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"21bc8e0ba5c2a081b0a2808c976d4c9dbddf1e48","status":"affected","version":"bcce8c74f1ce1e2731ac0261287897e3768767d8","versionType":"git"},{"lessThan":"b6422dff0e518245019233432b6bccfc30b73e2f","status":"affected","version":"bcce8c74f1ce1e2731ac0261287897e3768767d8","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/pci/controller/pci-hyperv.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.19"},{"lessThan":"6.19","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.14","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.14","versionStartIncluding":"6.19","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"6.19","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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->bridge->domain_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."}],"providerMetadata":{"dateUpdated":"2026-05-06T07:40:28.157Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/21bc8e0ba5c2a081b0a2808c976d4c9dbddf1e48"},{"url":"https://git.kernel.org/stable/c/b6422dff0e518245019233432b6bccfc30b73e2f"}],"title":"PCI: hv: Fix double ida_free in hv_pci_probe error path","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43097","datePublished":"2026-05-06T07:40:28.157Z","dateReserved":"2026-05-01T14:12:55.984Z","dateUpdated":"2026-05-06T07:40:28.157Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-06 10:16:23","lastModifiedDate":"2026-05-06 10:16:23","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43097","Ordinal":"1","Title":"PCI: hv: Fix double ida_free in hv_pci_probe error path","CVE":"CVE-2026-43097","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43097","Ordinal":"1","NoteData":"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->bridge->domain_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.","Type":"Description","Title":"PCI: hv: Fix double ida_free in hv_pci_probe error path"}]}}}