CVE-2022-50156

Summary

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

HID: cp2112: prevent a buffer overflow in cp2112_xfer()

Smatch warnings: drivers/hid/hid-cp2112.c:793 cp2112_xfer() error: __memcpy() 'data->block[1]' too small (33 vs 255) drivers/hid/hid-cp2112.c:793 cp2112_xfer() error: __memcpy() 'buf' too small (64 vs 255)

The 'read_length' variable is provided by 'data->block[0]' which comes from user and it(read_length) can take a value between 0-255. Add an upper bound to 'read_length' variable to prevent a buffer overflow in memcpy().

Affected Software

VendorProductVersion RangeStatus
LinuxLinux542134c0375b5ca2b1d18490c02b8a20bfdd8d74 < 3af7d60e9a6c17d6d41c4341f8020511887d372daffected
LinuxLinux542134c0375b5ca2b1d18490c02b8a20bfdd8d74 < 519ff31a6ddd87aa4905bd9bf3b92e8b88801614affected
LinuxLinux542134c0375b5ca2b1d18490c02b8a20bfdd8d74 < ebda3d6b004bb6127a66a616524a2de152302ca7affected
LinuxLinux542134c0375b5ca2b1d18490c02b8a20bfdd8d74 < 8489a20ac481b08c0391608d81ed3796d373cfdfaffected
LinuxLinux542134c0375b5ca2b1d18490c02b8a20bfdd8d74 < e7028944e61014ae915e7fb74963d3835f2f761aaffected
LinuxLinux542134c0375b5ca2b1d18490c02b8a20bfdd8d74 < 26e427ac85c2b8d0d108cc80b6de34d33e2780c4affected
LinuxLinux542134c0375b5ca2b1d18490c02b8a20bfdd8d74 < 381583845d19cb4bd21c8193449385f3fefa9cafaffected
LinuxLinux4.15affected
LinuxLinux0 < 4.15unaffected
LinuxLinux4.19.256 <= 4.19.*unaffected
LinuxLinux5.4.211 <= 5.4.*unaffected
LinuxLinux5.10.137 <= 5.10.*unaffected
LinuxLinux5.15.61 <= 5.15.*unaffected
LinuxLinux5.18.18 <= 5.18.*unaffected
LinuxLinux5.19.2 <= 5.19.*unaffected
LinuxLinux6.0 <= *unaffected

Weaknesses

References