CVE-2006-5173

Linux kernel does not properly save or restore EFLAGS during a context switch, or reset the flags when creating new threads, which allows local users to cause a denial of service (process crash), as demonstrated using a process that sets the Alignment Check flag (EFLAGS 0x40000), which triggers a SIGBUS in other processes that have an unaligned access.

🔗 References (22)

• cve@mitrehttp://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=47a5c6fa0e204a2b63309c648bb2fde36836c826
• cve@mitrehttp://secunia.com/advisories/23361
• cve@mitrehttp://secunia.com/advisories/23384
• cve@mitrehttp://secunia.com/advisories/23474
• cve@mitrehttp://secunia.com/advisories/23593
• cve@mitrehttp://secunia.com/advisories/25691
• cve@mitrehttp://www.mandriva.com/security/advisories?name=MDKSA-2007:002
• cve@mitrehttp://www.novell.com/linux/security/advisories/2006_79_kernel.html
• cve@mitrehttp://www.securityfocus.com/archive/1/471457
• cve@mitrehttp://www.securityfocus.com/bid/21851
• cve@mitrehttp://www.ubuntu.com/usn/usn-395-1
• af854a3a-2127-422b-91ae-364da2661108http://kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=47a5c6fa0e204a2b63309c648bb2fde36836c826
• af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/23361
• af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/23384
• af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/23474