CVE-2021-47602

Severity CVSS v4.0:

Pending analysis

Type:

CWE-824 Access of Uninitialized Pointer

Publication date:

19/06/2024

Last modified:

31/10/2024

Description

In the Linux kernel, the following vulnerability has been resolved: mac80211: track only QoS data frames for admission control For admission control, obviously all of that only works for QoS data frames, otherwise we cannot even access the QoS field in the header. Syzbot reported (see below) an uninitialized value here due to a status of a non-QoS nullfunc packet, which isn&#39;t even long enough to contain the QoS header. Fix this to only do anything for QoS data packets.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H 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:N/I:N/A:H

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

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::::::::	3.19 (including)	4.19.222 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.20 (including)	5.4.168 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.88 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.11 (excluding)
cpe:2.3:o:linux:linux_kernel:5.16:rc1::::::
cpe:2.3:o:linux:linux_kernel:5.16:rc2::::::
cpe:2.3:o:linux:linux_kernel:5.16:rc3::::::
cpe:2.3:o:linux:linux_kernel:5.16:rc4::::::
cpe:2.3:o:linux:linux_kernel:5.16:rc5::::::

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

CVE-2021-47602

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools