Advisory Published
Advisory Published

ZDI-23-1490: Linux Kernel Netfilter Xtables Out-Of-Bounds Read Information Disclosure Vulnerability

First published: Fri Sep 29 2023(Updated: )

This vulnerability allows local attackers to disclose sensitive information on affected installations of the Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the u32_match_it function. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated data structure. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the kernel.

Affected SoftwareAffected VersionHow to fix
Linux kernel

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Frequently Asked Questions

  • What is the vulnerability ID of this vulnerability?

    The vulnerability ID of this vulnerability is ZDI-23-1490.

  • What is the title of this vulnerability?

    The title of this vulnerability is Linux Kernel Netfilter Xtables Out-Of-Bounds Read Information Disclosure Vulnerability.

  • What is the severity level of vulnerability ZDI-23-1490?

    The severity level of vulnerability ZDI-23-1490 is medium.

  • What software is affected by vulnerability ZDI-23-1490?

    Vulnerability ZDI-23-1490 affects the Linux Kernel.

  • How can this vulnerability be exploited?

    This vulnerability can be exploited by local attackers who have the ability to execute high-privileged code on the target system.

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