CVE-2022-50733
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
An uninit-value vulnerability in the Linux kernel's idmouse driver could cause an uninitialized dereference during image validation if a USB command fails.
In the Linux kernel's usb/idmouse driver, the idmouse_create_image function may jump to a reset label when any ftip_command fails. This error path leaves the data in bulk_in_buffer[HEADER..IMGSIZE] uninitialized. When the subsequent check for a valid image is performed on this uninitialized buffer, it results in a read of uninitialized memory — an uninit-value bug [1].
AI Insight generated on May 19, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
1Patches
9b3304a6df9577dad42032f68f589b667567f1eae30c0113db8bbae3236ab20b8c456df586163a5ae097badad163d1cffbce2b0539933Vulnerability mechanics
Generated on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.
References
9- git.kernel.org/stable/c/1eae30c0113dde7522088231584d62415011a035nvd
- git.kernel.org/stable/c/20b8c456df584ebb2387dc23d40ebe4ff334417cnvd
- git.kernel.org/stable/c/6163a5ae097bc78fa26c243fb384537e25610fd7nvd
- git.kernel.org/stable/c/7dad42032f68718259590b0cc7654e9a95ff9762nvd
- git.kernel.org/stable/c/adad163d1cff248a5df9f7cec50158e6ca89f33bnvd
- git.kernel.org/stable/c/b3304a6df957cc89a0590cb505388d659bf3db4cnvd
- git.kernel.org/stable/c/b8bbae3236ab7dccc66c42bc3f7cdbcfc0786e54nvd
- git.kernel.org/stable/c/bce2b0539933e485d22d6f6f076c0fcd6f185c4cnvd
- git.kernel.org/stable/c/f589b667567fde4f81d6e6c40f42b9f2224690eanvd
News mentions
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