PT-2021-1516 · Linux+5 · Linux Kernel+5
Mark Tomlinson
·
Published
2021-07-21
·
Updated
2023-08-14
·
CVE-2021-38204
CVSS v2.0
7.2
High
| Vector | AV:L/AC:L/Au:N/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 5.13.6
Description
The issue is related to a use-after-free vulnerability in the Linux kernel, specifically in the drivers/usb/host/max3421-hcd.c component. This vulnerability can be exploited by physically proximate attackers to cause a denial of service (use-after-free and panic) by removing a MAX-3421 USB device in certain situations. It could also lead to local escalation of privilege with physical/USB access to the device, with no additional execution privileges needed. User interaction is not needed for exploitation.
Recommendations
For Linux kernel versions prior to 5.13.6, update to version 5.13.6 or later to resolve the issue. As a temporary workaround, consider restricting physical access to the device and avoiding the removal of MAX-3421 USB devices in certain situations to minimize the risk of exploitation.
Fix
DoS
Use After Free
Found an issue in the description? Have something to add? Feel free to write us 👾
Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Linuxmint
Linux Kernel
Suse
Ubuntu