Linux Kernel Program Control Return Denial of Service - Secunia Advisories - Vulnerability Intelligence

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Linux Kernel Program Control Return Denial of Service
Secunia Advisory:	SA19639	Advisory Toolbox: Issue ticket Save in to-do list Mark as handled Exploit information Download as PDF Review actions Add comment
Release Date:	2006-04-17
Last Update:	2006-06-01
Popularity:	7,966 views

Critical:	Not critical
Impact:	DoS
Where:	Local system
Solution Status:	Vendor Patch

OS:	Linux Kernel 2.6.x

Subscribe:	Instant alerts on relevant vulnerabilities

CVE reference:	CVE-2006-0744 CVE-2006-1523

Description: A vulnerability and a weakness have been reported in Linux Kernel, which can be exploited by malicious, local users to cause a DoS (Denial of Service). 1) An error exists when the kernel returns program control using SYSRET on Intel EM64T CPUs. The may cause a DoS due to the way Intel EM64T CPUs handle uncanonical return addresses when a user has been able to change the frames. 2) Improperly use of BUG_ON in the "__group_complete_signal()" function may in certain cases be exploited to cause unwanted process crashes. Solution: Update to version 2.6.16.5. Provided and/or discovered by: 1) Reported by the vendor. 2) Oleg Nesterov Changelog: 2006-06-01: Updated advisory. Original Advisory: http://marc.theaimsgroup.com/?l=linux-kernel&m=114476543426600&w=2 Kernel.org: http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.4 http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.5 http://www.kernel.org/git/?p=linux/ke...5e1a305ef6128c0405f1c5c8b5368d8756224

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