HomeDefectsLIN1024-1480
Acknowledged

LIN1024-1480 : Security Advisory - linux - CVE-2021-47401

Created: May 21, 2024    Updated: Jan 7, 2026
Resolved Date: May 22, 2024
Found In Version: 10.24.33.1
Severity: Standard
Applicable for: Wind River Linux LTS 24
Component/s: Kernel

Description

In the Linux kernel, the following vulnerability has been resolved:

ipack: ipoctal: fix stack information leak

The tty driver name is used also after registering the driver and must
specifically not be allocated on the stack to avoid leaking information
to user space (or triggering an oops).

Drivers should not try to encode topology information in the tty device
name but this one snuck in through staging without anyone noticing and
another driver has since copied this malpractice.

Fixing the ABI is a separate issue, but this at least plugs the security
hole.

CREATE(Triage):(User=admin) CVE-2021-47401 (https://nvd.nist.gov/vuln/detail/CVE-2021-47401)