CVE-2026-74460 PUBLISHED

can: ems_usb: validate CPC message lengths

Assigner: Linux
Reserved: 15.08.2026 Published: 15.08.2026 Updated: 15.08.2026

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

can: ems_usb: validate CPC message lengths

ems_usb_read_bulk_callback() walks CPC messages packed in one USB receive buffer.

Check that each declared message fits in the URB payload. Also require the type-specific payload to cover the fields used by the CAN, state, error and overrun handlers.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 702171adeed3607ee9603ec30ce081411e36ae42 to ce8125566b1d0b0f16449407e014addf451804ea (excl.)
  • affected from 702171adeed3607ee9603ec30ce081411e36ae42 to 0b9090717c7e2184e2c427bbcc752f295116ac1d (excl.)
  • affected from 702171adeed3607ee9603ec30ce081411e36ae42 to 0b23144c59c126beb4a7761a85a194ae0fe668a5 (excl.)
  • affected from 702171adeed3607ee9603ec30ce081411e36ae42 to df3ac2a672a5284441f120d486acabdd6740fc2a (excl.)
  • affected from 702171adeed3607ee9603ec30ce081411e36ae42 to 02925f51377f2a42a6724f00549167499c9302e5 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 2.6.32 is affected
  • unaffected from 0 to 2.6.32 (excl.)
  • unaffected from 6.6.151 to 6.6.* (incl.)
  • unaffected from 6.12.103 to 6.12.* (incl.)
  • unaffected from 6.18.44 to 6.18.* (incl.)
  • unaffected from 7.1.8 to 7.1.* (incl.)
  • unaffected from 7.2-rc6 to * (incl.)

References