CVE-2026-90421 PUBLISHED

PCI: Fix UAF when probe runs concurrent to dyn ID removal

Assigner: Linux
Reserved: 11.09.2026 Published: 17.09.2026 Updated: 17.09.2026

In the Linux kernel, the following vulnerability has been resolved:

PCI: Fix UAF when probe runs concurrent to dyn ID removal

Dynamic IDs are only guaranteed to be valid when dynids.lock is held, as remove_id_store() can free the node. Thus, make a copy in pci_match_device(). Also, clarify that the id parameter is only valid during probe.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 0994375e9614f78657031e04e30019b9cdb62795 to 42a5661ff7e4c7d3c5025d0f8e5079fb5479ea49 (excl.)
  • affected from 0994375e9614f78657031e04e30019b9cdb62795 to 3ffc4c9690c33ee28cdb3d0182b12f9c623e3acc (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 2.6.30 is affected
  • unaffected from 0 to 2.6.30 (excl.)
  • unaffected from 7.2.6 to 7.2.* (incl.)
  • unaffected from 7.3-rc1 to * (incl.)

References