Arjun Shankar 8e448310d7 Fix integer overflows in internal memalign and malloc functions [BZ #22343] ... When posix_memalign is called with an alignment less than MALLOC_ALIGNMENT and a requested size close to SIZE_MAX, it falls back to malloc code (because the alignment of a block returned by malloc is sufficient to satisfy the call). In this case, an integer overflow in _int_malloc leads to posix_memalign incorrectly returning successfully. Upon fixing this and writing a somewhat thorough regression test, it was discovered that when posix_memalign is called with an alignment larger than MALLOC_ALIGNMENT (so it uses _int_memalign instead) and a requested size close to SIZE_MAX, a different integer overflow in _int_memalign leads to posix_memalign incorrectly returning successfully. Both integer overflows affect other memory allocation functions that use _int_malloc (one affected malloc in x86) or _int_memalign as well. This commit fixes both integer overflows. In addition to this, it adds a regression test to guard against false successful allocations by the following memory allocation functions when called with too-large allocation sizes and, where relevant, various valid alignments: malloc, realloc, calloc, reallocarray, memalign, posix_memalign, aligned_alloc, valloc, and pvalloc.		2018-01-18 17:55:45 +01:00
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alloc_buffer_alloc_array.c	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
alloc_buffer_allocate.c	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
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alloc_buffer_copy_string.c	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
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arena.c	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
Depend	Update.	1999-10-04 22:59:43 +00:00
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dynarray-skeleton.c	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
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Makefile	Fix integer overflows in internal memalign and malloc functions [BZ #22343]	2018-01-18 17:55:45 +01:00
malloc-hooks.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
malloc-internal.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
malloc.c	Fix integer overflows in internal memalign and malloc functions [BZ #22343]	2018-01-18 17:55:45 +01:00
malloc.h	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
mallocbug.c	Reformat malloc to gnu style.	2014-01-02 09:40:10 +01:00
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reallocarray.c	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
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tst-malloc-tcache-leak.c	Increase some test timeouts.	2018-01-04 21:58:40 +00:00
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tst-malloc-too-large.c	Fix integer overflows in internal memalign and malloc functions [BZ #22343]	2018-01-18 17:55:45 +01:00
tst-malloc-usable-static-tunables.c	Initialize tunable list with the GLIBC_TUNABLES environment variable	2016-12-31 23:49:24 +05:30
tst-malloc-usable-static.c	Add framework for tunables	2016-12-31 23:49:24 +05:30
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tst-obstack.c	Modify several tests to use test-skeleton.c	2014-11-05 15:24:08 +05:30
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tst-valloc.c	Update copyright dates with scripts/update-copyrights.	2018-01-01 00:32:25 +00:00
Versions	Implement allocation buffers for internal use	2017-06-21 22:43:57 +02:00