high
7.9
CWE
476
Advisory Published
CVE Published
Updated

CVE-2010-4263: Null Pointer Dereference

First published: Mon Dec 06 2010(Updated: )

If igb's SR-IOV and promiscuous mode are enabled and the interface receives a tag VLAN packet, this will result in a null pointer dereference. To fix this, we will backport upstream commit 31b24b95 to ensure that vlan_gro_receive is only used if vlans have been registered to the adapter structure. [ This fixes bugzilla entry 15582 -Eric Dumazet] It matters if CONFIG_PCI_IOV is enabled, e.g. grep -ir SRIOV drivers/net/igb/*. Upstream commit: <a href="http://git.kernel.org/linus/31b24b95">http://git.kernel.org/linus/31b24b95</a> References: <a href="https://bugzilla.kernel.org/show_bug.cgi?id=15582">https://bugzilla.kernel.org/show_bug.cgi?id=15582</a>

Credit: secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
debian/linux-2.6
Linux Kernel<2.6.34
VMware ESX=3.0.0
VMware ESX=3.0.1
VMware ESX=3.0.2
VMware ESX=3.0.3
VMware ESX=3.5
VMware ESX=3.5-update1
VMware ESX=3.5-update2
VMware ESX=3.5-update3
VMware ESX=4.0
VMware ESX=4.1
VMware ESXi=3.5
VMware ESXi=3.5-1
VMware ESXi=4.0
VMware ESXi=4.0-1
VMware ESXi=4.0-2
VMware ESXi=4.0-3
VMware ESXi=4.0-4
VMware ESXi=4.1
VMware ESXi=4.1-1
VMware ESXi=4.1-2
VMware ESXi=5.0
VMware ESXi=5.0-1
VMware ESXi=5.0-2

Remedy

http://openwall.com/lists/oss-security/2010/12/06/3

Remedy

http://openwall.com/lists/oss-security/2010/12/06/9

Remedy

https://bugzilla.kernel.org/show_bug.cgi?id=15582

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=660188

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2010-4263?

    CVE-2010-4263 has a medium severity rating due to its potential to cause denial of service through null pointer dereference.

  • How do I fix CVE-2010-4263?

    To fix CVE-2010-4263, backport upstream commit 31b24b95 to your system to ensure vlan_gro_receive is only used with registered VLANs.

  • Which software is affected by CVE-2010-4263?

    CVE-2010-4263 affects several versions of the Linux Kernel and VMware ESX/ESXi, specifically multiple versions up to 4.1.

  • What is the impact of CVE-2010-4263?

    The impact of CVE-2010-4263 may lead to system crashes or unresponsive states due to the null pointer dereference when handling VLAN packets.

  • Is there a patch available for CVE-2010-4263?

    Yes, there is a patch available that includes a backported commit to mitigate the vulnerability in affected systems.

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