glibc/stdlib
Eric Biggers d5b1c5ed8b setenv fix memory leak when setting large, duplicate string (BZ #17658)
glibc maintains a binary tree of environment strings it malloc()ed
itself.  However, it's possible for it to malloc() a string, then find
that an identical string is already in the tree.  In this case, the
memory is leaked and is not freed if the application later calls
__libc_freeres().  Fix this by freeing 'new_value' when it's unneeded.

Test case:
	#include <stdlib.h>
	#include <string.h>

	int main()
	{
		char *p = calloc(100000, 1);
		memset(p, 'A', 99999);
		setenv("TESTVAR", p, 1);
		setenv("TESTVAR", p, 1);
		free(p);
	}

Leak that was reported by valgrind:
	100,008 bytes in 1 blocks are definitely lost in loss record 1 of 1
	   at 0x4C29F90: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
	   by 0x4E6B3D4: __add_to_environ (setenv.c:176)
	   by 0x4C31B8F: setenv (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
	   by 0x400642: main (in /mnt/tmpfs/a.out)
2015-01-07 12:10:52 +05:30
..
bits Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
sys
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abs.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
add_n.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
addmul_1.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
alloca.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
at_quick_exit.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
atexit.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
atof.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
atoi.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
atol.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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bsearch.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
bug-fmtmsg1.c
bug-getcontext.c
bug-strtod2.c
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canonicalize.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
cmp.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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Depend
div.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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divrem.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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errno.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
exit.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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grouping.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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groupingwc.c
inlines.c
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ldbl2mpn.c
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lshift.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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Makefile Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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old_atexit.c
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putenv.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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quick_exit.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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rand.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
random_r.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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rshift.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
secure-getenv.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
seed48_r.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
seed48.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
setcontext.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
setenv.c setenv fix memory leak when setting large, duplicate string (BZ #17658) 2015-01-07 12:10:52 +05:30
srand48_r.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
srand48.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
stdlib.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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strtoimax.c
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strtol.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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strtoumax.c
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swapcontext.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
system.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tens_in_limb.c
test-a64l.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
test-canon2.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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testdiv.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
testdiv.input
testmb2.c
testmb.c
testrand.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
testsort.c
tst-atof1.c
tst-atof2.c
tst-bsearch.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-environ.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-fmtmsg.c Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
tst-fmtmsg.sh Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-limits.c Fix a couple of -Wundef warnings. 2014-12-29 23:14:38 -05:00
tst-makecontext2.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-makecontext3.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-makecontext.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-putenv.c
tst-putenvmod.c
tst-qsort2.c
tst-qsort.c
tst-rand48-2.c Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
tst-rand48.c Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
tst-random2.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-random.c Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
tst-secure-getenv.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-setcontext.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-strtod2.c
tst-strtod3.c
tst-strtod4.c
tst-strtod5.c
tst-strtod6.c
tst-strtod-overflow.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-strtod-round-data
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tst-strtol.c Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
tst-strtoll.c Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
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tst-unsetenv1.c
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ucontext.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
udiv_qrnnd.c
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wcstombs.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
wcstoumax.c
wctomb.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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