CVE-2020-13143

Name of the Vulnerable Software and Affected Versions Linux kernel versions 3.16 through 5.6.13

Description The issue is related to the gadget dev desc UDC store function in the drivers/usb/gadget/configfs.c file of the Linux kernel. It relies on kstrdup without considering the possibility of an internal 0 value, allowing attackers to trigger an out-of-bounds read. This can potentially lead to a denial of service.

Recommendations For Linux kernel versions 3.16 through 5.6.13, consider disabling the gadget dev desc UDC store function as a temporary workaround until a patch is available. Restrict access to the configfs.c file to minimize the risk of exploitation. Avoid using the kstrdup function in the affected API endpoint until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.