oss-security - CVE Request: Three integer overflows in glibc memory allocator

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Date: Wed, 11 Sep 2013 12:49:04 +0100
From: Will Newton <will.newton@...aro.org>
To: oss-security@...ts.openwall.com
Subject: CVE Request: Three integer overflows in glibc memory allocator

Hi,

I recently discovered three integer overflow issues in the glibc
memory allocator functions pvalloc, valloc and
posix_memalign/memalign/aligned_alloc. These issues cause a large
allocation size to wrap around and cause a wrong sized allocation and
heap corruption. The issues are fixed in glibc mainline.

The relevant glibc bugzilla entries are here:

https://sourceware.org/bugzilla/show_bug.cgi?id=15855
https://sourceware.org/bugzilla/show_bug.cgi?id=15856
https://sourceware.org/bugzilla/show_bug.cgi?id=15857

Thanks,

-- 
Will Newton
Toolchain Working Group, Linaro

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