TITLE: Linux Kernel ICMP Error Handling Denial of Service
SECUNIA ADVISORY ID: SA18766
VERIFY ADVISORY: http://secunia.com/advisories/18766/
CRITICAL: Moderately critical
WHERE: >From remote
OPERATING SYSTEM: Linux Kernel 2.6.x http://secunia.com/product/2719/
DESCRIPTION: A vulnerability has been reported in the Linux Kernel, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due an error in the handling of an error condition when constructing an ICMP response in the "ip_options_echo()" function of icmp.c. This can be exploited to cause a DoS via specially crafted ICMP packets containing record-route or timestamp IP options.
SOLUTION: Update to version 22.214.171.124. http://www.kernel.org/
PROVIDED AND/OR DISCOVERED BY: Reported by vendor.
ORIGINAL ADVISORY: Kernel.org: http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-126.96.36.199
About: This Advisory was delivered by Secunia as a free service to help everybody keeping their systems up to date against the latest vulnerabilities.
Definitions: (Criticality, Where etc.) http://secunia.com/about_secunia_advisories/
Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor.