Linux Kernel up to 6.0.10 WILC1000 Wireless Driver cfg80211.c wilc_wfi_cfg_parse_ch_attr IEEE80211_P2P_ATTR_CHANNEL_LIST heap-based overflow

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.0.10. The impacted element is the function wilc_wfi_cfg_parse_ch_attr of the file drivers/net/wireless/microchip/wilc1000/cfg80211.c of the component WILC1000 Wireless Driver. Performing a manipulation of the argument IEEE80211_P2P_ATTR_CHANNEL_LIST results in heap-based overflow. This vulnerability is identified as CVE-2022-47521. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.0.10 (Operating System). This affects the function wilc_wfi_cfg_parse_ch_attr of the file drivers/net/wireless/microchip/wilc1000/cfg80211.c of the component WILC1000 Wireless Driver. The manipulation of the argument IEEE80211_P2P_ATTR_CHANNEL_LIST with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in the Linux kernel before 6.0.11. Missing validation of IEEE80211_P2P_ATTR_CHANNEL_LIST in drivers/net/wireless/microchip/wilc1000/cfg80211.c in the WILC1000 wireless driver can trigger a heap-based buffer overflow when parsing the operating channel attribute from Wi-Fi management frames.

The weakness was released 12/18/2022. The advisory is shared at lore.kernel.org. This vulnerability is uniquely identified as CVE-2022-47521 since 12/18/2022. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 236642 (Alibaba Cloud Linux 3 : 0042: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2023:0042)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.0.11 eliminates this vulnerability. Applying the patch f9b62f9843c7b0afdaecabbcebf1dbba18599408 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (236642). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.0.0
• 6.0.1
• 6.0.2
• 6.0.3
• 6.0.4
• 6.0.5
• 6.0.6
• 6.0.7
• 6.0.8
• 6.0.9
• 6.0.10

License

• open-source

Website

• Vendor: https://www.kernel.org/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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