Linux Kernel up to 5.15.144/6.1.15/6.2.2 ksmbd smb2_lock memory leak

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.15.144/6.1.15/6.2.2. It has been rated as critical. This impacts the function smb2_lock of the component ksmbd. The manipulation leads to memory leak. This vulnerability is referenced as CVE-2023-54162. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.15.144/6.1.15/6.2.2 and classified as critical. This issue affects the function smb2_lock of the component ksmbd. The manipulation with an unknown input leads to a memory leak vulnerability. Using CWE to declare the problem leads to CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. Impacted is availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix possible memory leak in smb2_lock() argv needs to be free when setup_async_work fails or when the current process is woken up.

The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2023-54162 since 12/24/2025. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 281679 (Linux Distros Unpatched Vulnerability : CVE-2023-54162), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.15.145, 6.1.16 or 6.2.3 eliminates this vulnerability. Applying the patch bfe8372ef2dbdce97f13b21d76e2080ddeef5a79/6bf555ed8938444466c3d7f3252eb874a518f293/11d38f8a0c19763e34d2093b5ecb640e012cb2d2/d3ca9f7aeba793d74361d88a8800b2f205c9236b is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (281679). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.15.144
• 6.1.0
• 6.1.1
• 6.1.2
• 6.1.3
• 6.1.4
• 6.1.5
• 6.1.6
• 6.1.7
• 6.1.8
• 6.1.9
• 6.1.10
• 6.1.11
• 6.1.12
• 6.1.13
• 6.1.14
• 6.1.15
• 6.2.0
• 6.2.1
• 6.2.2

License

• open-source

Website

• Vendor: https://www.kernel.org/

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CPE 2.2info

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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