CVE-2026-46293 PUBLISHED

clk: microchip: mpfs-ccc: fix out of bounds access during output registration

Assigner: Linux
Reserved: 13.05.2026 Published: 08.06.2026 Updated: 14.06.2026

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

clk: microchip: mpfs-ccc: fix out of bounds access during output registration

UBSAN reported an out of bounds access during registration of the last two outputs. This out of bounds access occurs because space is only allocated in the hws array for two PLLs and the four output dividers that each has, but the defined IDs contain two DLLS and their two outputs each, which are not supported by the driver. The ID order is PLLs -> DLLs -> PLL outputs -> DLL outputs. Decrement the PLL output IDs by two while adding them to the array to avoid the problem.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from d39fb172760e426e0628f16b785c85e16d17bd5e to 9ed9b580a814773482c0a4f1be045636e68cc109 (excl.)
  • affected from d39fb172760e426e0628f16b785c85e16d17bd5e to 47bc7a03449c39805bc2665d3e57c73195d5bcf8 (excl.)
  • affected from d39fb172760e426e0628f16b785c85e16d17bd5e to dbfcb09656cb30439577325c9dea2250203c2e3c (excl.)
  • affected from d39fb172760e426e0628f16b785c85e16d17bd5e to a0780aeea166a7cf4706c45af4cadbb2a43a1fc9 (excl.)
  • affected from d39fb172760e426e0628f16b785c85e16d17bd5e to f24efd415455b98a1f1cfc6071fe6fde71986706 (excl.)
  • affected from d39fb172760e426e0628f16b785c85e16d17bd5e to 2f7ae8ab6aa73daaf080d5332110357c29df9c36 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.1 is affected
  • unaffected from 0 to 6.1 (excl.)
  • unaffected from 6.1.175 to 6.1.* (incl.)
  • unaffected from 6.6.140 to 6.6.* (incl.)
  • unaffected from 6.12.88 to 6.12.* (incl.)
  • unaffected from 6.18.30 to 6.18.* (incl.)
  • unaffected from 7.0.7 to 7.0.* (incl.)
  • unaffected from 7.1 to * (incl.)

References