PT-2021-8277 · Linux+1 · Linux Kernel+1

Ferry Toth + 1 · Published 2021-04-15 · Updated 2024-05-30 · CVE-2021-46941

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to the usb: dwc3: core: Do core softreset when switch mode in the Linux kernel. According to the programming guide, to switch mode for DRD controller, the driver needs to follow specific steps. However, steps 1 and 3 are missing when switching from host to device, which can cause a lockup issue, as reported by John Stult with the HiKey960 platform and observed with Ferry's testing platform. The main fixes include adding the missing wait for clocks synchronization before clearing GCTL.CoreSoftReset and only applying DCTL.CSftRst when switching from host to device.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-911

Related Identifiers

BDU:2025-00829

CVE-2021-46941

OESA-2024-1345

OESA-2024-1346

SUSE-SU-2024:1643-1

SUSE-SU-2024:1646-1

SUSE-SU-2024:1870-1

Affected Products

Linux Kernel

Suse

References · 474

• https://osv.dev/vulnerability/SUSE-SU-2024:1646-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-47013 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-36782 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-46955 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-46941 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-47049 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-52604 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-46941 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-46909 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2024:1870-1 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2024-1345 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-47024 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-46941 · Security Note
• https://wiki.astralinux.ru/astra-linux-se81-bulletin-20241206SE81 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-46941 · Vendor Advisory