CVEvulnerability
CVE-2026-53067
7.8 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-06-24
- Last modified
- 2026-07-21
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-415
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 configurations
• linux linux kernel (>= 6.17 < 6.18.33)
• linux linux kernel (>= 6.19 < 7.0.10)
Related
Weakness · CWE (1)
- CWE-415 Double Free weakness