i40e: Fix NULL pointer dereference in i40e_dbg_dump_desc
Summary
GSD-2021-1002517: i40e: Fix NULL pointer dereference in i40e_dbg_dump_desc. Affects Kernel versions >= 02e9c290814cc143ceccecb14eac3e7a05da745e, < e5b7fb2198abc50058f1a29c395b004f76ab1c83. No fix is published. How to fix ↓
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Background
The i40e package is a driver for Intel Ethernet Connection X722 network adapters. It is a part of the Linux Kernel ecosystem. The i40e_dbg_dump_desc function in the i40e driver is responsible for dumping descriptor information for debugging purposes. However, a vulnerability exists in this function that can lead to a NULL pointer dereference.
Vulnerability Detail
The vulnerability in the i40e_dbg_dump_desc function allows an attacker to trigger a NULL pointer dereference, which can result in a system crash or potentially be exploited for further attacks. This vulnerability was introduced in version v3.12 of the Linux Kernel and has been fixed in version v5.10.85.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is essential to update the Linux Kernel to the fixed version to mitigate the risk.
Conclusion
The i40e driver in the Linux Kernel is vulnerable to a NULL pointer dereference in the i40e_dbg_dump_desc function. To mitigate this vulnerability, it is crucial to update the Linux Kernel to version v5.10.85 or later. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to a system crash or potentially be exploited for further attacks.
You can use the Vulert playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and Vulert will analyze it for any open-source vulnerabilities, including this one.
No, there is no known workaround for this vulnerability. It is crucial to update the Linux Kernel to the fixed version.
The vulnerability itself does not allow remote exploitation. However, if an attacker already has access to the system, they can trigger the vulnerability to crash the system or potentially escalate their privileges.
There are no known instances of this vulnerability being exploited in the wild at this time.
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