What is CVE-2021-47362?

CVE-2021-47362 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476), affecting Linux kernel versions from 4.9.131 onward and patched in 5.10.70, 5.14.9 and 5.15. CVE-2021-47362 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47362?

CVE-2021-47362 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-2021-47362?

Yes, CVE-2021-47362 has been patched. Fixed versions include 5.10.70, 5.14.9 and 5.15. If you are running Linux kernel 4.9.131 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47362 actively exploited?

CVE-2021-47362 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2021-47362

Medium

In the Linux kernel, the following vulnerability has been resolved: drm/amd/pm: Update intermediate power state for SI Update the current state as boot state during dpm initialization. During the subsequent initialization, set_power_state gets called to transition to the final power state. set_power_state refers to values from the current state and without current state populated, it could result in NULL pointer dereference. For ex: on platforms where PCI speed change is supported through ACPI ATCS method, the link speed of current state needs to be queried before deciding on changing to final power state's link speed. The logic to query ATCS-support was broken on certain platforms. The issue became visible when broken ATCS-support logic got fixed with commit f9b7f3703ff9 ("drm/amdgpu/acpi: make ATPX/ATCS structures global (v2)"). Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1698

Package Linux Kernel

Published 2024-05-21

Last modified 2024-12-26

CVSS version 3.1

Patch available

Yes

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-476

CVE-2021-47362 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

Affected versions

Linux kernel versions 4.9.131, 4.14.74, 4.18.12, 4.19 and later are affected. Fixed in 5.10.70, 5.14.9, 5.15 and their respective stable series.

Affected from

≥ 4.9.131 ≥ 4.14.74 ≥ 4.18.12 ≥ 4.19

Fixed in

✓ 5.10.70 5.10.x ✓ 5.14.9 5.14.x ✓ 5.15

References

3 total

Kernel Git
https://git.kernel.org/stable/c/06a18e64256f7aecb5a27df02faa3568fcd3c105

Patch
Kernel Git
https://git.kernel.org/stable/c/68d4fbe6220cd1f3d07cab0a4901e62f8c12cc68

Patch
Kernel Git
https://git.kernel.org/stable/c/ab39d3cef526ba09c4c6923b4cd7e6ec1c5d4faa

Patch

Details

CVE ID CVE-2021-47362

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-05-21

Modified 2024-12-26

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47362?

CVE-2021-47362 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . It affects Linux kernel versions from 4.9.131 onward and has been patched in 5.10.70, 5.14.9 and 5.15. CVE-2021-47362 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47362?

CVE-2021-47362 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-2021-47362?

Yes. CVE-2021-47362 has been patched. Fixed versions include 5.10.70, 5.14.9 and 5.15. If you are running Linux kernel 4.9.131 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47362 actively exploited?

No. CVE-2021-47362 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.