CVE-2021-46906 (GCVE-0-2021-46906)

Vulnerability from cvelistv5 – Published: 2024-02-26 17:20 – Updated: 2026-05-11 13:44
VLAI
Title
HID: usbhid: fix info leak in hid_submit_ctrl
Summary
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().
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 16:02 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6667 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c5d3c142f2d57d40c55e65d5622d319125a45366 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 41b1e71a2c57366b08dcca1a28b0d45ca69429ce (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8c064eece9a51856f3f275104520c7e3017fc5c0 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0e280502be1b003c3483ae03fc60dea554fcfa82 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7f5a4b24cdbd7372770a02f23e347d7d9a9ac8f1 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b1e3596416d74ce95cc0b7b38472329a3818f8a9 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 21883bff0fd854e07429a773ff18f1e9658f50e8 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 6be388f4a35d2ce5ef7dbf635a8964a5da7f799f (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 4.4.274 , ≤ 4.4.* (semver)
Unaffected: 4.9.274 , ≤ 4.9.* (semver)
Unaffected: 4.14.238 , ≤ 4.14.* (semver)
Unaffected: 4.19.196 , ≤ 4.19.* (semver)
Unaffected: 5.4.127 , ≤ 5.4.* (semver)
Unaffected: 5.10.45 , ≤ 5.10.* (semver)
Unaffected: 5.12.12 , ≤ 5.12.* (semver)
Unaffected: 5.13 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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