Linux Kernel up to 6.8.11/6.9.2 mana_ib mana_ib_install_cq_cb buffer overflow

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.8.11/6.9.2 and classified as critical. Affected by this issue is the function mana_ib_install_cq_cb of the component mana_ib. The manipulation results in buffer overflow. This vulnerability was named CVE-2024-38542. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.8.11/6.9.2. Affected is the function mana_ib_install_cq_cb of the component mana_ib. The manipulation with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: RDMA/mana_ib: boundary check before installing cq callbacks Add a boundary check inside mana_ib_install_cq_cb to prevent index overflow.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2024-38542 since 06/18/2024. The exploitability is told to be easy. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/04/2025).

The vulnerability scanner Nessus provides a plugin with the ID 249870 (Linux Distros Unpatched Vulnerability : CVE-2024-38542), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.8.12 or 6.9.3 eliminates this vulnerability. Applying the patch f12afddfb142/168f6fbde0ea/f79edef79b6a 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 databases at Tenable (249870) and CERT Bund (WID-SEC-2024-1418). Once again VulDB remains the best source for vulnerability data.

Affected

• Debian Linux
• Amazon Linux 2
• Red Hat Enterprise Linux
• Ubuntu Linux
• SUSE Linux
• IBM InfoSphere Guardium
• Oracle Linux
• Oracle VM
• IBM Security Guardium
• RESF Rocky Linux
• Broadcom Brocade SANnav
• Dell NetWorker
• Open Source Linux Kernel
• IBM QRadar SIEM
• Dell Avamar
• IBM Storage Scale
• Juniper Junos Space
• SolarWinds Security Event Manager
• Dell PowerProtect Data Domain

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.8.0
• 6.8.1
• 6.8.2
• 6.8.3
• 6.8.4
• 6.8.5
• 6.8.6
• 6.8.7
• 6.8.8
• 6.8.9
• 6.8.10
• 6.8.11
• 6.9.0
• 6.9.1
• 6.9.2

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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