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Merge branch 'bug20710_025' into maint-0.2.9

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This commit is contained in:
Nick Mathewson 2016-12-07 10:52:12 -05:00
commit d6ca36defa
2 changed files with 7 additions and 2 deletions
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4
changes/bug20710_025 Normal file
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@ -0,0 +1,4 @@
o Minor bugfixes (memory leak, use-after-free, linux seccomp2 sandbox):
- Fix a memory leak and use-after-free error when removing entries
from the sandbox's getaddrinfo() cache. Fixes bug 20710; bugfix on
0.2.5.5-alpha. Patch from "cypherpunks".

5
src/common/sandbox.c
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@ -1579,13 +1579,14 @@ sandbox_add_addrinfo(const char *name)
void void
sandbox_free_getaddrinfo_cache(void) sandbox_free_getaddrinfo_cache(void)
{ {
cached_getaddrinfo_item_t **next, **item; cached_getaddrinfo_item_t **next, **item, *this;
for (item = HT_START(getaddrinfo_cache, &getaddrinfo_cache); for (item = HT_START(getaddrinfo_cache, &getaddrinfo_cache);
item; item;
item = next) { item = next) {
this = *item;
next = HT_NEXT_RMV(getaddrinfo_cache, &getaddrinfo_cache, item); next = HT_NEXT_RMV(getaddrinfo_cache, &getaddrinfo_cache, item);
cached_getaddrinfo_item_free(*item); cached_getaddrinfo_item_free(this);
} }
HT_CLEAR(getaddrinfo_cache, &getaddrinfo_cache); HT_CLEAR(getaddrinfo_cache, &getaddrinfo_cache);