CyberRota Analysis
AI-GeneratedA vulnerability exists in the MTP backend of gvfs, where the do_read() function improperly trusts the data length reported by mounted MTP devices, leading to potential memory over-read. This flaw can be exploited by an attacker using a malicious MTP device to cause a segmentation fault in the gvfsd-mtp process, resulting in a denial of service. Organizations utilizing gvfs with MTP support should prioritize addressing this issue to mitigate potential disruptions.
Original NVD Description
A flaw was found in the MTP backend in gvfs. When reading a file from a mounted MTP device, do_read() in gvfsbackendmtp.c trusts the data length returned by the device without limiting it to the original size requested by the client. If a malicious MTP device responds with more bytes than requested, this unrestricted length is passed directly to memcpy(). This causes the operation to read memory outside the intended boundaries. This allows an attacker who plugs in a malicious MTP device to cause a segmentation fault when a file is read and crash the gvfsd-mtp process, resulting in a denial of service.