CVE-2022-50733
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BaseFortify

Publication date: 2025-12-24

Last updated on: 2025-12-29

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: usb: idmouse: fix an uninit-value in idmouse_open In idmouse_create_image, if any ftip_command fails, it will go to the reset label. However, this leads to the data in bulk_in_buffer[HEADER..IMGSIZE] uninitialized. And the check for valid image incurs an uninitialized dereference. Fix this by moving the check before reset label since this check only be valid if the data after bulk_in_buffer[HEADER] has concrete data. Note that this is found by KMSAN, so only kernel compilation is tested.
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Meta Information
Published
2025-12-24
Last Modified
2025-12-29
Generated
2026-06-16
AI Q&A
2025-12-24
EPSS Evaluated
2026-06-15
NVD
CVE-2022-50733
Affected Vendors & Products
Currently, no data is known.
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is in the Linux kernel's usb idmouse driver. Specifically, in the idmouse_create_image function, if a certain command (ftip_command) fails, the code jumps to a reset label without properly initializing some data in the bulk_in_buffer array. This leads to an uninitialized value being dereferenced when checking for a valid image, which is a programming error. The issue was found using Kernel Memory Sanitizer (KMSAN) during kernel compilation testing.

Impact Analysis

The vulnerability causes an uninitialized value to be dereferenced in kernel code, which can lead to undefined behavior such as kernel crashes or instability. However, since it was detected by KMSAN during compilation testing, it primarily affects kernel reliability and stability rather than direct security compromise. There is no information about exploitation or impact beyond this.

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