CVE-2006-1902: Buffer Overflow
First published: Thu Apr 20 2006(Updated: )
fold_binary in fold-const.c in GNU Compiler Collection (gcc) 4.1 improperly handles pointer overflow when folding a certain expr comparison to a corresponding offset comparison in cases other than EQ_EXPR and NE_EXPR, which might introduce buffer overflow vulnerabilities into applications that could be exploited by context-dependent attackers.NOTE: the vendor states that the essence of the issue is "not correctly interpreting an offset to a pointer as a signed value."
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GNU GCC | =4.1 |
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Reference Links
- http://www.securityfocus.com/archive/1/431319/100/0/threaded
- http://www.securityfocus.com/archive/1/431297/100/0/threaded
- http://gcc.gnu.org/ml/gcc-bugs/2006-04/msg01297.html
- http://gcc.gnu.org/ml/gcc-bugs/2006-04/msg01298.html
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=356896
- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26763
- http://gcc.gnu.org/viewcvs/branches/gcc-4_1-branch/gcc/fold-const.c?r1=110549&r2=112698&pathrev=112698&diff_format=h
- http://www.securityfocus.com/archive/1/431245/100/0/threaded
- http://www.securityfocus.com/archive/1/431184/100/0/threaded
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- version/gnu gcc/4.1