CVE-2026-74458

Summary

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

can: kvaser_usb_leaf: kvaser_usb_leaf_wait_cmd(): validate received command extents

The wait and bulk receive paths walk variable-length commands from a USB buffer. A nonzero command shorter than CMD_HEADER_LEN can still be dispatched, and the wait path copies a matching command into a fixed caller-owned struct kvaser_cmd using the device-provided length.

Reject nonzero commands that do not contain the fixed header or that extend beyond the current USB buffer item. In the wait path, also reject a matching command that exceeds the destination before copying it.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux080f40a6fa28dab299da7a652e444b1e2d9231e7 < c00ec53d7dec08134e97071850cc00ef000c5b77affected
LinuxLinux080f40a6fa28dab299da7a652e444b1e2d9231e7 < d9e91672526ffa279709b15490118aea1bdee714affected
LinuxLinux080f40a6fa28dab299da7a652e444b1e2d9231e7 < 72f96c2942f11a0ae8663adcb3d9ee986e07d4faaffected
LinuxLinux080f40a6fa28dab299da7a652e444b1e2d9231e7 < 695aea154bb2d453e6daada1510972fafd075285affected
LinuxLinux080f40a6fa28dab299da7a652e444b1e2d9231e7 < 3d0897ec623e422695d70d80ae456f89476c5328affected
LinuxLinux080f40a6fa28dab299da7a652e444b1e2d9231e7 < 185cb1fa38142a3cbf223dd8b3abb24217f330d3affected
LinuxLinux080f40a6fa28dab299da7a652e444b1e2d9231e7 < 21f0465fd86d77794aaed8e05f833634f68d178daffected
LinuxLinux080f40a6fa28dab299da7a652e444b1e2d9231e7 < 0293dd153f9dbc1ddf5dacdccc76b363bce4a8eeaffected
LinuxLinux3.8affected
LinuxLinux0 < 3.8unaffected
LinuxLinux5.10.265 <= 5.10.*unaffected
LinuxLinux5.15.216 <= 5.15.*unaffected
LinuxLinux6.1.183 <= 6.1.*unaffected
LinuxLinux6.6.151 <= 6.6.*unaffected
LinuxLinux6.12.103 <= 6.12.*unaffected
LinuxLinux6.18.44 <= 6.18.*unaffected
LinuxLinux7.1.8 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References