CVE - CVE-2021-46906

CVE-ID
CVE-2021-46906	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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().
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/0e280502be1b003c3483ae03fc60dea554fcfa82 URL:https://git.kernel.org/stable/c/0e280502be1b003c3483ae03fc60dea554fcfa82 MISC:https://git.kernel.org/stable/c/21883bff0fd854e07429a773ff18f1e9658f50e8 URL:https://git.kernel.org/stable/c/21883bff0fd854e07429a773ff18f1e9658f50e8 MISC:https://git.kernel.org/stable/c/41b1e71a2c57366b08dcca1a28b0d45ca69429ce URL:https://git.kernel.org/stable/c/41b1e71a2c57366b08dcca1a28b0d45ca69429ce MISC:https://git.kernel.org/stable/c/6be388f4a35d2ce5ef7dbf635a8964a5da7f799f URL:https://git.kernel.org/stable/c/6be388f4a35d2ce5ef7dbf635a8964a5da7f799f MISC:https://git.kernel.org/stable/c/7f5a4b24cdbd7372770a02f23e347d7d9a9ac8f1 URL:https://git.kernel.org/stable/c/7f5a4b24cdbd7372770a02f23e347d7d9a9ac8f1 MISC:https://git.kernel.org/stable/c/8c064eece9a51856f3f275104520c7e3017fc5c0 URL:https://git.kernel.org/stable/c/8c064eece9a51856f3f275104520c7e3017fc5c0 MISC:https://git.kernel.org/stable/c/b1e3596416d74ce95cc0b7b38472329a3818f8a9 URL:https://git.kernel.org/stable/c/b1e3596416d74ce95cc0b7b38472329a3818f8a9 MISC:https://git.kernel.org/stable/c/c5d3c142f2d57d40c55e65d5622d319125a45366 URL:https://git.kernel.org/stable/c/c5d3c142f2d57d40c55e65d5622d319125a45366
Assigning CNA
kernel.org
Date Record Created
20240225	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240225)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
This is an record on the CVE List, which provides common identifiers for publicly known cybersecurity vulnerabilities.
Search CVE Using Keywords: You can also search by reference using the CVE Reference Maps.
For More Information: CVE Request Web Form (select "Other" from dropdown)