title: HID: usbhid: fix info leak in hid_submit_ctrl
description: In the Linux kernel, the following vulnerability has been resolved:
HID: usbhid: fix info leak in hid_submit_ctrl
In hid_submit_ctrl(), the way of calculating the report length doesn't
take into account that report->size can be zero. When running the
syzkaller reproducer, a report of size 0 causes hid_submit_ctrl) to
calculate transfer_buffer_length as 16384. When this urb is passed to
the usb core layer, KMSAN reports an info leak of 16384 bytes.
To fix this, first modify hid_report_len() to account for the zero
report size case by using DIV_ROUND_UP for the division. Then, call it
from hid_submit_ctrl().
affected:
{
product: Linux
vendor: Linux
defaultStatus: unaffected
repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
versions:
version: 1da177e4c3f4, lessThan: c5d3c142f2d5, status: affected, versionType: git
version: 1da177e4c3f4, lessThan: 41b1e71a2c57, status: affected, versionType: git
version: 1da177e4c3f4, lessThan: 8c064eece9a5, status: affected, versionType: git
version: 1da177e4c3f4, lessThan: 0e280502be1b, status: affected, versionType: git
version: 1da177e4c3f4, lessThan: 7f5a4b24cdbd, status: affected, versionType: git
version: 1da177e4c3f4, lessThan: b1e3596416d7, status: affected, versionType: git
version: 1da177e4c3f4, lessThan: 21883bff0fd8, status: affected, versionType: git
version: 1da177e4c3f4, lessThan: 6be388f4a35d, status: affected, versionType: git
}
{
product: Linux
vendor: Linux
defaultStatus: affected
repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
versions:
version: 4.4.274, lessThanOrEqual: 4.4.*, status: unaffected, versionType: custom
version: 4.9.274, lessThanOrEqual: 4.9.*, status: unaffected, versionType: custom
version: 4.14.238, lessThanOrEqual: 4.14.*, status: unaffected, versionType: custom
version: 4.19.196, lessThanOrEqual: 4.19.*, status: unaffected, versionType: custom
version: 5.4.127, lessThanOrEqual: 5.4.*, status: unaffected, versionType: custom
version: 5.10.45, lessThanOrEqual: 5.10.*, status: unaffected, versionType: custom
version: 5.12.12, lessThanOrEqual: 5.12.*, status: unaffected, versionType: custom
version: 5.13, lessThanOrEqual: *, status: unaffected, versionType: original_commit_for_fix
}
