Description
Multiple integer overflows in the (1) chk_malloc, (2) leak_malloc, and (3) leak_memalign functions in libc/bionic/malloc_debug_leak.c in Bionic (libc) for Android, when libc.debug.malloc is set, make it easier for context-dependent attackers to perform memory-related attacks such as buffer overflows via a large size value, which causes less memory to be allocated than expected.
References
- http://kqueue.org/blog/2012/03/05/memory-allocator-security-revisited/
- [oss-security] 20120605 memory allocator upstream patches mailing-list
- [oss-security] 20120607 Re: memory allocator upstream patches mailing-list
- https://github.com/android/platform_bionic/commit/7f5aa4f35e23fd37425b3a5041737cdf58f87385