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().
History

Thu, 19 Dec 2024 08:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 11 Sep 2024 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 11 Sep 2024 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-02-26T17:20:22.144Z

Updated: 2024-12-19T07:31:34.509Z

Reserved: 2024-02-25T13:45:52.717Z

Link: CVE-2021-46906

cve-icon Vulnrichment

Updated: 2024-08-04T05:17:42.969Z

cve-icon NVD

Status : Modified

Published: 2024-02-26T18:15:07.160

Modified: 2024-11-21T06:34:54.283

Link: CVE-2021-46906

cve-icon Redhat

Severity : Low

Publid Date: 2024-02-26T00:00:00Z

Links: CVE-2021-46906 - Bugzilla