CVE-2008-1367

gcc 4.3.x does not generate a cld instruction while compiling functions
used for string manipulation such as memcpy and memmove on x86 and i386,
which can prevent the direction flag (DF) from being reset in violation of
ABI conventions and cause data to be copied in the wrong direction during
signal handling in the Linux kernel, which might allow context-dependent
attackers to trigger memory corruption. NOTE: this issue was originally
reported for CPU consumption in SBCL.

Bugs

• <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=469058&gt;
• <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=469567&gt;
• <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=465583&gt;
• <http://lkml.org/lkml/2008/3/5/306&gt;

Notes