7.5CVSSHIGH
Description
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.
CVSS Vector Breakdown
Exploitability
AV:NAccess VectorNetwork
AC:LAccess ComplexityLow
Au:NAuthenticationNone
Impact
C:PConfidentialityPartial
I:PIntegrityPartial
A:PAvailabilityPartial
Weaknesses
Affected Products
Exploitability
No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
References
http://secunia.com/advisories/30962
secunia.com
http://gcc.gnu.org/ml/gcc-patches/2008-03/msg00499.html
gcc.gnu.org
http://gcc.gnu.org/ml/gcc-patches/2008-03/msg00428.html
gcc.gnu.org
and 25 more references View all →
Timeline
Published
Mar 17, 2008
Last Updated
Apr 23, 2026
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