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| author | Ulrich Drepper <drepper@redhat.com> | 2005-03-06 21:25:22 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2005-03-06 21:25:22 +0000 |
| commit | 84c33ccbbe045d3b074d63504b4d5fad4dc253e6 (patch) | |
| tree | 3fb35293bf8aa59953b42182606de71fd65cd4f3 /debug/recv_chk.c | |
| parent | 5dc2883e54cd2ceec387d6fb3b889f86b9831a87 (diff) | |
| download | glibc-84c33ccbbe045d3b074d63504b4d5fad4dc253e6.tar glibc-84c33ccbbe045d3b074d63504b4d5fad4dc253e6.tar.gz glibc-84c33ccbbe045d3b074d63504b4d5fad4dc253e6.tar.bz2 glibc-84c33ccbbe045d3b074d63504b4d5fad4dc253e6.zip | |
* debug/recv_chk.c (__recv_chk): Always fail if request could
overflow the buffer.
* debug/recvfrom_chk.c (__recvfrom_chk): Likewise.
Diffstat (limited to 'debug/recv_chk.c')
| -rw-r--r-- | debug/recv_chk.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/debug/recv_chk.c b/debug/recv_chk.c index 7a49d17234..479ebdfe72 100644 --- a/debug/recv_chk.c +++ b/debug/recv_chk.c @@ -23,11 +23,8 @@ ssize_t __recv_chk (int fd, void *buf, size_t n, size_t buflen, int flags) { - /* In case N is greater than BUFLEN, we read BUFLEN+1 bytes. - This might overflow the buffer but the damage is reduced to just - one byte. And the program will terminate right away. */ - ssize_t nrecv = __recv (fd, buf, MIN (n, buflen + 1), flags); - if (nrecv > 0 && (size_t) nrecv > buflen) + if (n > buflen) __chk_fail (); - return nrecv; + + return __recv (fd, buf, n, flags); } |