CVE-2026-46074 PUBLISHED

spi: ch341: fix memory leaks on probe failures

Assigner: Linux
Reserved: 13.05.2026 Published: 27.05.2026 Updated: 27.05.2026

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

spi: ch341: fix memory leaks on probe failures

Make sure to deregister the controller, disable pins, and kill and free the RX URB on probe failures to mirror disconnect and avoid memory leaks and use-after-free.

Also add an explicit URB kill on disconnect for symmetry (even if that is not strictly required as USB core would have stopped it in the current setup).

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 8846739f52afa07e63395c80227dc544f54bd7b1 to 5c6518633702d7f7b1153e9d8e042af847f11ef3 (excl.)
  • affected from 8846739f52afa07e63395c80227dc544f54bd7b1 to ff8a7996dc8bf433efe2126ffdaee5b374a89e30 (excl.)
  • affected from 8846739f52afa07e63395c80227dc544f54bd7b1 to 9bee2faf9e21c796d0d222c9d84a98f41bd303a0 (excl.)
  • affected from 8846739f52afa07e63395c80227dc544f54bd7b1 to b99e3ddb91b499d920e63a2daff8880be68cfe9e (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.11 is affected
  • unaffected from 0 to 6.11 (excl.)
  • unaffected from 6.12.86 to 6.12.* (incl.)
  • unaffected from 6.18.27 to 6.18.* (incl.)
  • unaffected from 7.0.4 to 7.0.* (incl.)
  • unaffected from 7.1-rc1 to * (incl.)

References