CVE-2022-50733

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux4244f72436ab77c3c29a6447af81734ab3925d85 < b3304a6df957cc89a0590cb505388d659bf3db4caffected
LinuxLinux4244f72436ab77c3c29a6447af81734ab3925d85 < 7dad42032f68718259590b0cc7654e9a95ff9762affected
LinuxLinux4244f72436ab77c3c29a6447af81734ab3925d85 < f589b667567fde4f81d6e6c40f42b9f2224690eaaffected
LinuxLinux4244f72436ab77c3c29a6447af81734ab3925d85 < 1eae30c0113dde7522088231584d62415011a035affected
LinuxLinux4244f72436ab77c3c29a6447af81734ab3925d85 < b8bbae3236ab7dccc66c42bc3f7cdbcfc0786e54affected
LinuxLinux4244f72436ab77c3c29a6447af81734ab3925d85 < 20b8c456df584ebb2387dc23d40ebe4ff334417caffected
LinuxLinux4244f72436ab77c3c29a6447af81734ab3925d85 < 6163a5ae097bc78fa26c243fb384537e25610fd7affected
LinuxLinux4244f72436ab77c3c29a6447af81734ab3925d85 < adad163d1cff248a5df9f7cec50158e6ca89f33baffected
LinuxLinux4244f72436ab77c3c29a6447af81734ab3925d85 < bce2b0539933e485d22d6f6f076c0fcd6f185c4caffected
LinuxLinux2.6.13affected
LinuxLinux0 < 2.6.13unaffected
LinuxLinux4.9.331 <= 4.9.*unaffected
LinuxLinux4.14.296 <= 4.14.*unaffected
LinuxLinux4.19.262 <= 4.19.*unaffected
LinuxLinux5.4.220 <= 5.4.*unaffected
LinuxLinux5.10.150 <= 5.10.*unaffected
LinuxLinux5.15.75 <= 5.15.*unaffected
LinuxLinux5.19.17 <= 5.19.*unaffected
LinuxLinux6.0.3 <= 6.0.*unaffected
LinuxLinux6.1 <= *unaffected

Weaknesses

References