HID: usbhid: fix info leak in hid_submit_ctrl (Linux Linux)

CVE-2021-46906
MEDIUM 5.5

At a glance

Source
NVD
EPSS
EPSS 0.24 % · percentile 16 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

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().

Weaknesses (CWE)

  • CWE-668 — Exposure of Resource to Wrong Sphere

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < c5d3c142f2d57d40c55e65d5622d319125a45366 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 41b1e71a2c57366b08dcca1a28b0d45ca69429ce ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 8c064eece9a51856f3f275104520c7e3017fc5c0 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 0e280502be1b003c3483ae03fc60dea554fcfa82 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7f5a4b24cdbd7372770a02f23e347d7d9a9ac8f1 ; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b1e3596416d74ce95cc0b7b38472329a3818f8a9
Linux · Linuxaffected 2.6.12 ; unaffected 0 < 2.6.12 ; unaffected 4.4.274 ≤ 4.4.* ; unaffected 4.9.274 ≤ 4.9.* ; unaffected 4.14.238 ≤ 4.14.* ; unaffected 4.19.196 ≤ 4.19.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD