Linux Kernel up to 6.0.17/6.1.3 parisc pdc_iodc_print iodc_dbuf[] buffer overflow

Summaryinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.0.17/6.1.3. This issue affects the function pdc_iodc_print of the component parisc. The manipulation of the argument iodc_dbuf[] leads to buffer overflow. This vulnerability is traded as CVE-2022-50518. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.0.17/6.1.3. It has been rated as critical. This issue affects the function pdc_iodc_print of the component parisc. The manipulation of the argument iodc_dbuf[] 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. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: parisc: Fix locking in pdc_iodc_print() firmware call Utilize pdc_lock spinlock to protect parallel modifications of the iodc_dbuf[] buffer, check length to prevent buffer overflow of iodc_dbuf[], drop the iodc_retbuf[] buffer and fix some wrong indentings.

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2022-50518 since 10/07/2025. The exploitation is known to be easy. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/18/2026).

Upgrading to version 6.0.18 or 6.1.4 eliminates this vulnerability. Applying the patch 04a603058e70b8b881bb7860b8bd649f931f2591/553bc5890ed96a8d006224c3a4673c47fee0d12a/7236aae5f81f3efbd93d0601e74fc05994bc2580 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-2025-2229). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

• Debian Linux
• Amazon Linux 2
• Red Hat Enterprise Linux
• Ubuntu Linux
• SUSE Linux
• Oracle Linux
• RESF Rocky Linux
• Open Source Linux Kernel
• IBM QRadar SIEM
• Dell NetWorker

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.0.0
• 6.0.1
• 6.0.2
• 6.0.3
• 6.0.4
• 6.0.5
• 6.0.6
• 6.0.7
• 6.0.8
• 6.0.9
• 6.0.10
• 6.0.11
• 6.0.12
• 6.0.13
• 6.0.14
• 6.0.15
• 6.0.16
• 6.0.17
• 6.1.0
• 6.1.1
• 6.1.2
• 6.1.3

License

• open-source

Website

• Vendor: https://www.kernel.org/

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