Vulnerability in Kernel: mac80211 skb length check in ieee80211_scan_rx()
Summary
GSD-2021-1000976: mac80211: fix skb length check in ieee80211_scan_rx(). Affects Kernel versions >= cd418ba63f0c2f6157f35a41c9accc6ecb52590a, < 5a1cd67a801cf5ef989c4783e07b86a25b143126. No fix is published. How to fix ↓
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Background
The Kernel is a fundamental component of the Linux operating system, responsible for managing system resources and providing an interface for applications to interact with the hardware. It includes various subsystems, including mac80211, which implements the IEEE 802.11 wireless networking standard. The mac80211 subsystem handles wireless packet processing and scanning. However, a vulnerability has been discovered in the skb length check within the ieee80211_scan_rx() function of mac80211.
Vulnerability Detail
The vulnerability in mac80211's ieee80211_scan_rx() function allows an attacker to exploit a flaw in the skb length check. By sending specially crafted wireless packets, an attacker can trigger a buffer overflow or other memory corruption issues, potentially leading to arbitrary code execution or a denial of service. This vulnerability was introduced in Linux Kernel version v5.10 and has been fixed in version v5.10.46.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
In conclusion, the vulnerability in mac80211's ieee80211_scan_rx() function poses a risk of arbitrary code execution or denial of service. It is crucial to update the Linux Kernel to version v5.10.46 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability allows an attacker to potentially execute arbitrary code or cause a denial of service by exploiting the skb length check issue in mac80211's ieee80211_scan_rx() function.
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No specific workaround has been provided for this vulnerability. It is recommended to update the Linux Kernel to the fixed version.
Yes, this vulnerability was introduced in Linux Kernel version v5.10. Users running older versions of the Kernel may also be affected and should update to the fixed version.
The vulnerability was discovered by an automated ID intended to aid in the discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven.
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