SB2011090106 - Memory corruption in Linux kernel

Description

This security bulletin contains information about 1 security vulnerability.

1) Memory corruption (CVE-ID: CVE-2011-1576)

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The Generic Receive Offload (GRO) implementation in the Linux kernel 2.6.18 on Red Hat Enterprise Linux 5 and 2.6.32 on Red Hat Enterprise Linux 6, as used in Red Hat Enterprise Virtualization (RHEV) Hypervisor and other products, allows remote attackers to cause a denial of service via crafted VLAN packets that are processed by the napi_reuse_skb function, leading to (1) a memory leak or (2) memory corruption, a different vulnerability than CVE-2011-1478.

Remediation

Install update from vendor's website.

References

• http://www.securitytracker.com/id?1025853
• http://www.redhat.com/support/errata/RHSA-2011-1090.html
• http://www.redhat.com/support/errata/RHSA-2011-1106.html
• https://bugzilla.redhat.com/show_bug.cgi?id=695173
• http://www.securityfocus.com/bid/48907
• http://rhn.redhat.com/errata/RHSA-2011-0927.html