What is the severity of CVE-2021-47251?

CVE-2021-47251 has been categorized as a low-severity vulnerability within the Linux kernel.

What is the impact of CVE-2021-47251?

CVE-2021-47251 allows for potential denial of service due to improper length validation in the mac80211 subsystem.

How do I fix CVE-2021-47251?

To fix CVE-2021-47251, update your Linux kernel to at least version 5.10.46, 5.12.13, or any version above 5.13-rc6 where the vulnerability has been resolved.

Which Linux kernel versions are affected by CVE-2021-47251?

CVE-2021-47251 affects Linux kernel versions from 5.10 to 5.13-rc6, including various 5.13 release candidates.

Is CVE-2021-47251 a local or remote vulnerability?

CVE-2021-47251 can be exploited remotely, targeting the mac80211 subsystem in wireless communications.

Vulnerability/
CVE-2021-47251

high

7.8

CWE

1284

21/5/2024

30/4/2025

CVE-2021-47251: mac80211: fix skb length check in ieee80211_scan_rx()

First published: Tue May 21 2024(Updated: )

In the Linux kernel, the following vulnerability has been resolved: mac80211: fix skb length check in ieee80211_scan_rx() Replace hard-coded compile-time constants for header length check with dynamic determination based on the frame type. Otherwise, we hit a validation WARN_ON in cfg80211 later. [style fixes, reword commit message]

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

Affected Software	Affected Version	How to fix
Linux Kernel
Linux Kernel	>=5.10<5.10.46
Linux Kernel	>=5.11<5.12.13
Linux Kernel	=5.13-rc1
Linux Kernel	=5.13-rc2
Linux Kernel	=5.13-rc3
Linux Kernel	=5.13-rc4
Linux Kernel	=5.13-rc5
Linux Kernel	=5.13-rc6

Never miss a vulnerability like this again

Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-47251?
CVE-2021-47251 has been categorized as a low-severity vulnerability within the Linux kernel.
What is the impact of CVE-2021-47251?
CVE-2021-47251 allows for potential denial of service due to improper length validation in the mac80211 subsystem.
How do I fix CVE-2021-47251?
To fix CVE-2021-47251, update your Linux kernel to at least version 5.10.46, 5.12.13, or any version above 5.13-rc6 where the vulnerability has been resolved.
Which Linux kernel versions are affected by CVE-2021-47251?
CVE-2021-47251 affects Linux kernel versions from 5.10 to 5.13-rc6, including various 5.13 release candidates.
Is CVE-2021-47251 a local or remote vulnerability?
CVE-2021-47251 can be exploited remotely, targeting the mac80211 subsystem in wireless communications.

agent/references
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vendor/linux
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version/linux kernel/5.10
version/linux kernel/5.11
version/linux kernel/5.13-rc1
version/linux kernel/5.13-rc2
version/linux kernel/5.13-rc3
version/linux kernel/5.13-rc4
version/linux kernel/5.13-rc5
version/linux kernel/5.13-rc6

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Frequently Asked Questions

What is the severity of CVE-2021-47251?
CVE-2021-47251 has been categorized as a low-severity vulnerability within the Linux kernel.
What is the impact of CVE-2021-47251?
CVE-2021-47251 allows for potential denial of service due to improper length validation in the mac80211 subsystem.
How do I fix CVE-2021-47251?
To fix CVE-2021-47251, update your Linux kernel to at least version 5.10.46, 5.12.13, or any version above 5.13-rc6 where the vulnerability has been resolved.
Which Linux kernel versions are affected by CVE-2021-47251?
CVE-2021-47251 affects Linux kernel versions from 5.10 to 5.13-rc6, including various 5.13 release candidates.
Is CVE-2021-47251 a local or remote vulnerability?
CVE-2021-47251 can be exploited remotely, targeting the mac80211 subsystem in wireless communications.

CVE-2021-47251: mac80211: fix skb length check in ieee80211_scan_rx()

Remedy

Remedy

Remedy

Never miss a vulnerability like this again

Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-47251?

What is the impact of CVE-2021-47251?

How do I fix CVE-2021-47251?

Which Linux kernel versions are affected by CVE-2021-47251?

Is CVE-2021-47251 a local or remote vulnerability?

Company

Resources

Contact

Frequently Asked Questions

What is the severity of CVE-2021-47251?

What is the impact of CVE-2021-47251?

How do I fix CVE-2021-47251?

Which Linux kernel versions are affected by CVE-2021-47251?

Is CVE-2021-47251 a local or remote vulnerability?