In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
HID: mcp2221: validate report size in mcp2221_raw_event()<\/p>\n
mcp2221_raw_event() never validates the size of incoming HID reports.
\nIn the MCP2221_I2C_GET_DATA path it trusts the device-supplied data[3]
\nas the copy length without checking that 4 + data[3] bytes actually
\nexist in the received report. A malicious or misbehaving USB device can
\nsend a short report with a large data[3], causing the memcpy to read
\npast the valid report data in the HID transfer buffer and leak
\nuninitialized kernel memory back to userspace through the I2C\/SMBus
\nread path.<\/p>\n
Add a minimum size check at entry and validate that the source range
\nfits within the received report before the copy.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
HID: mcp2221: validate report size in mcp2221_raw_event()<\/p>\n
mcp2221_raw_event() never validates the size of incoming HID reports.
\nIn<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21543","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21543","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=21543"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21543"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21543"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}