What is the severity of CVE-2021-47079?

CVE-2021-47079 has been assigned a severity rating that may vary depending on the specific Linux kernel version affected.

How do I fix CVE-2021-47079?

To fix CVE-2021-47079, users should update their Linux kernel to a version that is not vulnerable, specifically a version beyond 5.12.7.

Which versions of the Linux kernel are affected by CVE-2021-47079?

CVE-2021-47079 affects Linux kernel versions from 5.12 up to 5.12.7 and also includes 5.13-rc1 and 5.13-rc2.

What is the nature of the vulnerability in CVE-2021-47079?

CVE-2021-47079 is a NULL pointer dereference vulnerability occurring in the ideapad-laptop driver, which can lead to system instability.

Is there a workaround for CVE-2021-47079?

While the best option is to apply patches, temporary mitigations may involve disabling the affected driver until the kernel is updated.

Vulnerability/
CVE-2021-47079

medium

5.5

CWE

476

1/3/2024

19/12/2024

CVE-2021-47079: platform/x86: ideapad-laptop: fix a NULL pointer dereference

First published: Fri Mar 01 2024(Updated: )

In the Linux kernel, the following vulnerability has been resolved: platform/x86: ideapad-laptop: fix a NULL pointer dereference The third parameter of dytc_cql_command should not be NULL since it will be dereferenced immediately.

Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Affected Software	Affected Version	How to fix
Linux Kernel	>=5.12<5.12.7
Linux Kernel	=5.13-rc1
Linux Kernel	=5.13-rc2

Remedy

https://git.kernel.org/stable/c/beab753fe3b4e087411a850a64c6cd748544d8a1

Remedy

https://git.kernel.org/stable/c/ff67dbd554b2aaa22be933eced32610ff90209dd

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-47079?
CVE-2021-47079 has been assigned a severity rating that may vary depending on the specific Linux kernel version affected.
How do I fix CVE-2021-47079?
To fix CVE-2021-47079, users should update their Linux kernel to a version that is not vulnerable, specifically a version beyond 5.12.7.
Which versions of the Linux kernel are affected by CVE-2021-47079?
CVE-2021-47079 affects Linux kernel versions from 5.12 up to 5.12.7 and also includes 5.13-rc1 and 5.13-rc2.
What is the nature of the vulnerability in CVE-2021-47079?
CVE-2021-47079 is a NULL pointer dereference vulnerability occurring in the ideapad-laptop driver, which can lead to system instability.
Is there a workaround for CVE-2021-47079?
While the best option is to apply patches, temporary mitigations may involve disabling the affected driver until the kernel is updated.

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