CVE-2022-50156
HID: cp2112: prevent a buffer overflow in cp2112_xfer()
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Description
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory 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
References (7)
CVSS
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