CVE-2022-50156 Details
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().
A buffer overflow vulnerability has been identified in the Linux kernel's HID CP2112 driver. The issue arises in the 'cp2112_xfer()' function, where the 'read_length' variable, sourced from user input, can take values between 0 and 255. This variable is used to determine the length of data to be read, but without proper validation, it can lead to a buffer overflow when the length exceeds the allocated buffer size. The vulnerability has been addressed by adding an upper limit to the 'read_length' variable, ensuring it does not exceed the buffer capacity.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/26e427ac85c2b8d0d108cc80b6de34d33e2780c4 | kernel.org | Patch |
| https://git.kernel.org/stable/c/381583845d19cb4bd21c8193449385f3fefa9caf | kernel.org | Patch |
| https://git.kernel.org/stable/c/3af7d60e9a6c17d6d41c4341f8020511887d372d | kernel.org | Patch |
| https://git.kernel.org/stable/c/519ff31a6ddd87aa4905bd9bf3b92e8b88801614 | kernel.org | Patch |
| https://git.kernel.org/stable/c/8489a20ac481b08c0391608d81ed3796d373cfdf | kernel.org | Patch |
| https://git.kernel.org/stable/c/e7028944e61014ae915e7fb74963d3835f2f761a | kernel.org | Patch |
| https://git.kernel.org/stable/c/ebda3d6b004bb6127a66a616524a2de152302ca7 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 4.15.1, < 4.19.256 >= 4.20, < 5.4.211 >= 5.5, < 5.10.137 >= 5.11, < 5.15.61 >= 5.16, < 5.18.18 >= 5.19, < 5.19.2 4.15 - 4.15 rc6 4.15 rc7 4.15 rc8 4.15 rc9 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 4, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | kernel.org |
| Nov 25, 2025 | Initial Analysis | [email protected] |
| Jun 18, 2025 | New CVE Received | kernel.org |