Description
In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: pci-ep-msi: Fix error unwind and prevent double alloc pci_epf_alloc_doorbell() stores the allocated doorbell message array in epf->db_msg/epf->num_db before requesting MSI vectors. If MSI allocation fails, the array is freed but the EPF state may still point to freed memory. Clear epf->db_msg and epf->num_db on the MSI allocation failure path so that later cleanup cannot double-free the array and callers can retry allocation. Also return -EBUSY when doorbells have already been allocated to prevent leaking or overwriting an existing allocation.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
1c3b002c6bf684b445a7107609979bca5f21bc03 to < 175717cfc06cab79f84cd037d66dda1b8564cd9eaffected1c3b002c6bf684b445a7107609979bca5f21bc03 to < 3c25587fbf8797b92090b064a6d239a873e55fb1affected1c3b002c6bf684b445a7107609979bca5f21bc03 to < 1cba96c0a795124c3229293ed7b5b5765e66f259affected
Linux Linux
Default version status: affected
6.17affected0 to < 6.17unaffected6.18.33 to ≤ 6.18.*unaffected7.0.10 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected