{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53067", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.382Z", "datePublished": "2026-06-24T16:30:09.492Z", "dateUpdated": "2026-06-24T16:30:09.492Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-06-24T16:30:09.492Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: endpoint: pci-ep-msi: Fix error unwind and prevent double alloc\n\npci_epf_alloc_doorbell() stores the allocated doorbell message array in\nepf->db_msg/epf->num_db before requesting MSI vectors. If MSI allocation\nfails, the array is freed but the EPF state may still point to freed\nmemory.\n\nClear epf->db_msg and epf->num_db on the MSI allocation failure path so\nthat later cleanup cannot double-free the array and callers can retry\nallocation.\n\nAlso return -EBUSY when doorbells have already been allocated to prevent\nleaking or overwriting an existing allocation."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/pci/endpoint/pci-ep-msi.c"], "versions": [{"version": "1c3b002c6bf684b445a7107609979bca5f21bc03", "lessThan": "175717cfc06cab79f84cd037d66dda1b8564cd9e", "status": "affected", "versionType": "git"}, {"version": "1c3b002c6bf684b445a7107609979bca5f21bc03", "lessThan": "3c25587fbf8797b92090b064a6d239a873e55fb1", "status": "affected", "versionType": "git"}, {"version": "1c3b002c6bf684b445a7107609979bca5f21bc03", "lessThan": "1cba96c0a795124c3229293ed7b5b5765e66f259", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/pci/endpoint/pci-ep-msi.c"], "versions": [{"version": "6.17", "status": "affected"}, {"version": "0", "lessThan": "6.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.33", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.10", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "6.18.33"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.0.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/175717cfc06cab79f84cd037d66dda1b8564cd9e"}, {"url": "https://git.kernel.org/stable/c/3c25587fbf8797b92090b064a6d239a873e55fb1"}, {"url": "https://git.kernel.org/stable/c/1cba96c0a795124c3229293ed7b5b5765e66f259"}], "title": "PCI: endpoint: pci-ep-msi: Fix error unwind and prevent double alloc", "x_generator": {"engine": "bippy-1.2.0"}}}}

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