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| author | Evgeny Ermakov <evgeny.v.ermakov@gmail.com> | 2020-02-06 07:46:29 +1100 |
|---|---|---|
| committer | Garrett D'Amore <garrett@damore.org> | 2020-02-05 22:34:45 -0800 |
| commit | 40141b3f3891e86541544848f65ea57fef41cedd (patch) | |
| tree | 0e9e96dfe48dcab51b41fc7061251936d014ce05 /src/platform/posix | |
| parent | 291496f21f9daf1a0f64871043a5a7bc9180b1ad (diff) | |
| download | nng-40141b3f3891e86541544848f65ea57fef41cedd.tar.gz nng-40141b3f3891e86541544848f65ea57fef41cedd.tar.bz2 nng-40141b3f3891e86541544848f65ea57fef41cedd.zip | |
Fix possible use after free
Diffstat (limited to 'src/platform/posix')
| -rw-r--r-- | src/platform/posix/posix_resolv_gai.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/src/platform/posix/posix_resolv_gai.c b/src/platform/posix/posix_resolv_gai.c index a89c4623..5cec0570 100644 --- a/src/platform/posix/posix_resolv_gai.c +++ b/src/platform/posix/posix_resolv_gai.c @@ -257,13 +257,15 @@ resolv_ip(const char *host, const char *serv, int passive, int family, // NB: must remain valid until this is completed. So we have to // keep our own copy. - if (host == NULL) { - item->name = NULL; - - } else if (nni_strnlen(host, sizeof(item->name_buf)) >= + if (host != NULL && nni_strnlen(host, sizeof(item->name_buf)) >= sizeof(item->name_buf)) { NNI_FREE_STRUCT(item); nni_aio_finish_error(aio, NNG_EADDRINVAL); + return; + } + + if (host == NULL) { + item->name = NULL; } else { nni_strlcpy(item->name_buf, host, sizeof(item->name_buf)); item->name = item->name_buf; |