medium
6.6
CWE
476
Advisory Published
CVE Published
Updated

CVE-2010-3437: Null Pointer Dereference

First published: Tue Sep 28 2010(Updated: )

Description of problem: The PKT_CTRL_CMD_STATUS device ioctl retrieves a pointer to a pktcdvd_device from the global pkt_devs array. The index into this array is provided directly by the user and is a signed integer, so the comparison to ensure that it falls within the bounds of this array will fail when provided with a negative index. This can be used to read arbitrary kernel memory or cause a crash due to an invalid pointer dereference. This can be exploited by users with permission to open /dev/pktcdvd/control (on many distributions, this is readable by group "cdrom"). Upstream commit: <a href="http://git.kernel.org/linus/252a52aa4fa22a668f019e55b3aac3ff71ec1c29">http://git.kernel.org/linus/252a52aa4fa22a668f019e55b3aac3ff71ec1c29</a>

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
debian/linux-2.6
Linux Kernel<2.6.36
Linux Kernel=2.6.36
Linux Kernel=2.6.36-rc1
Linux Kernel=2.6.36-rc2
Linux Kernel=2.6.36-rc3
Linux Kernel=2.6.36-rc4
Linux Kernel=2.6.36-rc5
openSUSE=11.2
openSUSE=11.3
SUSE Linux Enterprise Desktop with Beagle=10-sp3
SUSE Linux Enterprise Desktop with Beagle=11-sp1
SUSE Linux Enterprise Real Time Extension=11-sp1
SUSE Linux Enterprise Server=9
SUSE Linux Enterprise Server=10-sp3
SUSE Linux Enterprise Server=11-sp1
SUSE Linux Enterprise Software Development Kit=10-sp3
Debian GNU/Linux=5.0
Ubuntu Linux=6.06
Ubuntu Linux=8.04
Ubuntu Linux=9.04
Ubuntu Linux=9.10
Ubuntu Linux=10.04
Ubuntu Linux=10.10
Debian=5.0
Ubuntu=6.06
Ubuntu=8.04
Ubuntu=9.04
Ubuntu=9.10
Ubuntu=10.04
Ubuntu=10.10

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=638085

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2010-3437?

    CVE-2010-3437 is classified as a high severity vulnerability due to its potential to allow local users to gain elevated privileges.

  • How do I fix CVE-2010-3437?

    To fix CVE-2010-3437, it is recommended to upgrade the affected Linux kernel packages to a version that has addressed this vulnerability.

  • Which Linux kernel versions are affected by CVE-2010-3437?

    CVE-2010-3437 affects the Linux kernel versions up to and including 2.6.36.

  • Can CVE-2010-3437 be exploited remotely?

    No, CVE-2010-3437 requires local access to the system to exploit.

  • What software distributions are impacted by CVE-2010-3437?

    CVE-2010-3437 impacts various distributions including Debian, Ubuntu, and openSUSE with specific noted kernel versions.

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