CVE-2022-50156

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().

Score

CVSS 3.1 7.8 High

Status

Modified - 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2025-06-18

Last modified

2026-08-05

Weaknesses

CWE-787

Affected products

• Linux Kernel (Linux)

References

• https://git.kernel.org/stable/c/26e427ac85c2b8d0d108cc80b6de34d33e2780c4
• https://git.kernel.org/stable/c/381583845d19cb4bd21c8193449385f3fefa9caf
• https://git.kernel.org/stable/c/3af7d60e9a6c17d6d41c4341f8020511887d372d
• https://git.kernel.org/stable/c/519ff31a6ddd87aa4905bd9bf3b92e8b88801614
• https://git.kernel.org/stable/c/8489a20ac481b08c0391608d81ed3796d373cfdf
• https://git.kernel.org/stable/c/e7028944e61014ae915e7fb74963d3835f2f761a
• https://git.kernel.org/stable/c/ebda3d6b004bb6127a66a616524a2de152302ca7