Technical Description

Multiple vulnerabilities have been identified in Linux Kernel, which could be exploited by attackers to cause a denial of service or disclose sensitive information.

The first issue is due to an error in the Stream Control Transmission Protocol (SCTP) code that does not properly handle malformed HB-ACK chunks, which could be exploited by attackers to crash a vulnerable system.

The second issue is due to an error in the Stream Control Transmission Protocol (SCTP) code during parameter processing, which could be exploited by attackers to crash a vulnerable system.

The third vulnerability is due to a race condition in the "do_add_counters()" function in netfilter, which could be exploited by attackers to disclose portions of the memory or cause a denial of service.

Affected Products

Linux Kernel version 2.6.16.16 and prior
Linux Kernel version 2.4.32 and prior

Solution

Upgrade to Linux Kernel version 2.6.16.17 or 2.4.33 :
http://www.kernel.org

References

http://www.vupen.com/english/advisories/2006/1893
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.17

Credits

Vulnerabilities reported by Solar Designer and the vendor

ChangeLog

2006-05-22 : Initial release
2006-08-12 : Updated Solution

Vulnerability Management

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