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getrandom: it's MIN, not MAX

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Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Yaakov Selkowitz
2017-03-11 10:01:47 +01:00
committed by Corinna Vinschen
parent c9e4b69e9f
commit 6c420fa494
2 changed files with 3 additions and 1 deletions
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2
winsup/cygwin/libc/getentropy.cc
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@@ -51,7 +51,7 @@ getrandom (void *ptr, size_t len, unsigned int flags)
return -1; return -1;
} }
/* Max. bytes returned by Linux call. */ /* Max. bytes returned by Linux call. */
len = MAX (len, (flags & GRND_RANDOM) ? 512 : 33554431); len = MIN (len, (flags & GRND_RANDOM) ? 512 : 33554431);
__try __try
{ {
if (!RtlGenRandom (ptr, len)) if (!RtlGenRandom (ptr, len))

2
winsup/cygwin/release/2.8.0
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@@ -23,3 +23,5 @@ Bug Fixes
- Fix a few problems which are the combined culprit of fork failing - Fix a few problems which are the combined culprit of fork failing
when called recursively from a pthread. when called recursively from a pthread.
Addresses: https://cygwin.com/ml/cygwin/2017-03/msg00113.html Addresses: https://cygwin.com/ml/cygwin/2017-03/msg00113.html
- Fix potential buffer overflow in getrandom.