In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
HID: intel-thc-hid: intel-quickspi: validate report size before copy<\/p>\n
write_cmd_to_txdma() builds an output report in qsdev->report_buf, a heap
\nbuffer allocated in quickspi_alloc_report_buf() to the device-descriptor
\nderived max_report_len (a few hundred bytes for a touch controller). It
\ncopies the caller-supplied report into that buffer:<\/p>\n
memcpy(write_buf->content, report_buf, report_buf_len);<\/p>\n
The HID core caps a report at HID_MAX_BUFFER_SIZE (16384) by default, and
\nquickspi_hid_ll_driver does not set max_buffer_size, so the length reaches
\nthe driver unbounded. A hidraw SET_REPORT\/SET_FEATURE ioctl carrying a
\nreport larger than max_report_len therefore overflows report_buf with
\nattacker-controlled length and content.<\/p>\n
Record the report_buf allocation size and reject reports that do not fit
\nbefore copying, matching the equivalent guard in the intel-quicki2c
\nsibling (quicki2c_init_write_buf()) and the hid-goodix-spi fix.<\/p>\n
write_cmd_to_txdma() writes the output report header ahead of the content
\nin the same buffer, so size the allocation to cover the header as well.
\nThat keeps the added bound from rejecting a maximum-sized report.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
HID: intel-thc-hid: intel-quickspi: validate report size before copy<\/p>\n
write_cmd_to_txdma() builds an output report in qsdev->report<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21542","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21542","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=21542"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21542"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21542"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}