{"cve":"CVE-2026-53067","nvd":{"published":"2026-06-24T17:17:19.780","modified":"2026-07-21T17:37:33.227","status":"Analyzed","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-415"],"references":["https://git.kernel.org/stable/c/175717cfc06cab79f84cd037d66dda1b8564cd9e","https://git.kernel.org/stable/c/1cba96c0a795124c3229293ed7b5b5765e66f259","https://git.kernel.org/stable/c/3c25587fbf8797b92090b064a6d239a873e55fb1"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:41:17.107060303+00:00"},"epss":{"cve":"CVE-2026-53067","score":0.00173,"percentile":0.06761,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}