CVE-2021-47401

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

21/05/2024

Last modified:

26/09/2025

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.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

Base Score 3.x

5.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	3.5 (including)	4.4.286 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.5 (including)	4.9.285 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.10 (including)	4.14.249 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.15 (including)	4.19.209 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.20 (including)	5.4.151 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.71 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.14.10 (excluding)
cpe:2.3:o:linux:linux_kernel:5.15:rc1::::::
cpe:2.3:o:linux:linux_kernel:5.15:rc2::::::
cpe:2.3:o:linux:linux_kernel:5.15:rc3::::::

To consult the complete list of CPE names with products and versions, see this page

CVE-2021-47401

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools