Linux Kernel IP Framework net/key/af_key.c pfkey_register out-of-bounds write

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel. This affects the function pfkey_register of the file net/key/af_key.c of the component IP Framework. Performing a manipulation results in out-of-bounds write. This vulnerability was named CVE-2022-3028. The attack may be initiated remotely. There is no available exploit. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel (Operating System) (version now known). This affects the function pfkey_register of the file net/key/af_key.c of the component IP Framework. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A race condition was found in the Linux kernel's IP framework for transforming packets (XFRM subsystem) when multiple calls to xfrm_probe_algs occurred simultaneously. This flaw could allow a local attacker to potentially trigger an out-of-bounds write or leak kernel heap memory by performing an out-of-bounds read and copying it into a socket.

The weakness was presented 08/31/2022 as ba953a9d89a00c078b85f4b190bc1dde66fe16b5. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2022-3028 since 08/29/2022. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 236648 (Alibaba Cloud Linux 3 : 0002: cloud-kernel bugfix, enhancement and (ALINUX3-SA-2023:0002)), which helps to determine the existence of the flaw in a target environment.

Applying the patch ba953a9d89a00c078b85f4b190bc1dde66fe16b5 is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at Tenable (236648). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

License

• open-source

Website

• Vendor: https://www.kernel.org/

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Entryinfo

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

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