PT-2026-51961 · Linux · Linux
Published
2026-06-24
·
Updated
2026-06-24
·
CVE-2026-53067
None
No severity ratings or metrics are available. When they are, we'll update the corresponding info on the page.
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.
Found an issue in the description? Have something to add? Feel free to write us 👾
Related Identifiers
Affected Products
Linux