CVE-2021-47251

mac80211: fix skb length check in ieee80211_scan_rx()

Description

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]

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.03%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/5a1cd67a801cf5ef989c4783e07b86a25b143126 patch
https://git.kernel.org/stable/c/d1b949c70206178b12027f66edc088d40375b5cb patch
https://git.kernel.org/stable/c/e298aa358f0ca658406d524b6639fe389cb6e11e patch

Frequently Asked Questions

What is the severity of CVE-2021-47251?
CVE-2021-47251 has been scored as a high severity vulnerability.
How to fix CVE-2021-47251?
To fix CVE-2021-47251, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-47251 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-47251 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-47251?
CVE-2021-47251 affects Linux Linux, Linux Linux.
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