What is CVE-2021-47602?

CVE-2021-47602 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Access of Uninitialized Pointer flaw (CWE-824). CVE-2021-47602 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47602?

CVE-2021-47602 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2021-47602?

No patch is currently available for CVE-2021-47602. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-47602 actively exploited?

CVE-2021-47602 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Access of Uninitialized Pointer (CWE-824)?

The product accesses or uses a pointer that has not been initialised, leading to undefined behaviour. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/824.html

CVE-2021-47602

Medium

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't even long enough to contain the QoS header. Fix this to only do anything for QoS data packets.

Package Linux Kernel

Published 2024-06-19

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-824

CVE-2021-47602 is a Access of Uninitialized Pointer vulnerability

What is Access of Uninitialized Pointer?

The product accesses or uses a pointer that has not been initialised, leading to undefined behaviour. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2021-47602 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/42d08e97b196479f593499e887a9ab81446a34b9
Patch
Kernel patch commit
https://git.kernel.org/stable/c/46b9e29db2012a4d2a40a26101862e002ccf387b
Patch
Kernel patch commit
https://git.kernel.org/stable/c/69f054d6642c8f6173724ce17e7ee3ff66b8f682
Patch

5 patch commits total View all on NVD

Details

CVE ID CVE-2021-47602

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-06-19

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-47602?

CVE-2021-47602 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Access of Uninitialized Pointer flaw (CWE-824) . CVE-2021-47602 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47602?

CVE-2021-47602 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2021-47602?

No patch is currently available for CVE-2021-47602. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-47602 actively exploited?

No — CVE-2021-47602 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Access of Uninitialized Pointer (CWE-824)?

The product accesses or uses a pointer that has not been initialised, leading to undefined behaviour. View CWE-824 on MITRE CWE →