high
7.2
CWE
119
Advisory Published
CVE Published
Updated

CVE-2011-2517: Buffer Overflow

First published: Fri Jul 01 2011(Updated: )

In both trigger_scan and sched_scan operations, we were checking for the SSID length before assigning the value correctly. Since the memory was just kzalloc'ed, the check was always failing and SSID with over 32 characters were allowed to go through. This is causing a buffer overflow when copying the actual SSID to the proper place. Upstream fixes: <a href="http://git.kernel.org/linus/208c72f4fe44fe09577e7975ba0e7fa0278f3d03">http://git.kernel.org/linus/208c72f4fe44fe09577e7975ba0e7fa0278f3d03</a> <a href="http://git.kernel.org/linus/57a27e1d6a3bb9ad4efeebd3a8c71156d6207536">http://git.kernel.org/linus/57a27e1d6a3bb9ad4efeebd3a8c71156d6207536</a>

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
debian/linux-2.6
Linux Kernel<2.6.39.2
Red Hat Enterprise Linux Server=5.0
Red Hat Enterprise Linux Workstation=5.0
Red Hat Enterprise Linux=5.0
Red Hat Enterprise Linux Desktop=5.0

Remedy

https://github.com/torvalds/linux/commit/208c72f4fe44fe09577e7975ba0e7fa0278f3d03

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2011-2517?

    CVE-2011-2517 is classified as a high severity vulnerability due to the potential for buffer overflow leading to system crashes or execution of arbitrary code.

  • How do I fix CVE-2011-2517?

    To fix CVE-2011-2517, update the Linux kernel to a version newer than 2.6.39.2 or apply the relevant patches provided by your distribution.

  • What systems are affected by CVE-2011-2517?

    CVE-2011-2517 affects several versions of the Linux kernel, including specific versions of Red Hat Enterprise Linux 5.0 and Debian linux-2.6 packages.

  • What type of vulnerability is CVE-2011-2517?

    CVE-2011-2517 is a buffer overflow vulnerability that occurs due to improper checks on SSID length during certain operations.

  • What are the potential impacts of CVE-2011-2517?

    The potential impacts of CVE-2011-2517 include system instability, crashes, and the possibility for an attacker to execute arbitrary code on the affected system.

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