Linux Kernel up to 6.6.14/6.7.2 xsk_buff_free buffer overflow

Summaryinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.6.14/6.7.2. Affected by this issue is the function xsk_buff_free. Such manipulation leads to buffer overflow. This vulnerability is referenced as CVE-2024-35834. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.6.14/6.7.2. Affected by this issue is the function xsk_buff_free. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: xsk: recycle buffer in case Rx queue was full Add missing xsk_buff_free() call when __xsk_rcv_zc() failed to produce descriptor to XSK Rx queue.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2024-35834 since 05/17/2024. The exploitation is known 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 07/21/2025).

Upgrading to version 6.6.15 or 6.7.3 eliminates this vulnerability. Applying the patch cce713664548/7b4d93d31aad/269009893146 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 CERT Bund (WID-SEC-2024-1188). Once again VulDB remains the best source for vulnerability data.

Affected

• Google Container-Optimized OS
• Debian Linux
• Amazon Linux 2
• Red Hat Enterprise Linux
• Ubuntu Linux
• SUSE Linux
• IBM InfoSphere Guardium
• Oracle Linux
• Oracle VM
• NetApp FAS
• EMC Avamar
• IBM SAN Volume Controller
• Dell NetWorker
• IBM FlashSystem
• IBM Security Guardium
• RESF Rocky Linux
• Broadcom Brocade SANnav
• Open Source Linux Kernel
• IBM Business Automation Workflow
• IBM Spectrum Protect Plus
• IBM QRadar SIEM
• Dell Avamar
• Juniper Junos Space
• IBM DB2
• IBM Storage Scale System
• SolarWinds Security Event Manager

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.6.0
• 6.6.1
• 6.6.2
• 6.6.3
• 6.6.4
• 6.6.5
• 6.6.6
• 6.6.7
• 6.6.8
• 6.6.9
• 6.6.10
• 6.6.11
• 6.6.12
• 6.6.13
• 6.6.14
• 6.7.0
• 6.7.1
• 6.7.2

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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