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| author | Mingli Yu <Mingli.Yu@windriver.com> | 2018-09-20 12:41:13 +0200 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2018-09-20 12:41:13 +0200 |
| commit | e7d22db29cfdd2f1fb97a70a76fa53d151569945 (patch) | |
| tree | bb34d1cfbe6efbc93bdb6b1b8098e22955539f68 /sysdeps/unix/sysv/linux | |
| parent | 1fe2b9ca8a50aaa789d72944b5a91f1d35337adc (diff) | |
| download | glibc-e7d22db29cfdd2f1fb97a70a76fa53d151569945.tar glibc-e7d22db29cfdd2f1fb97a70a76fa53d151569945.tar.gz glibc-e7d22db29cfdd2f1fb97a70a76fa53d151569945.tar.bz2 glibc-e7d22db29cfdd2f1fb97a70a76fa53d151569945.zip | |
Linux gethostid: Check for NULL value from gethostbyname_r [BZ #23679]
A NULL value can happen with certain gethostbyname_r failures.
(cherry picked from commit 1214ba06e6771acb953a190091b0f6055c64fd25)
Diffstat (limited to 'sysdeps/unix/sysv/linux')
| -rw-r--r-- | sysdeps/unix/sysv/linux/gethostid.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sysdeps/unix/sysv/linux/gethostid.c b/sysdeps/unix/sysv/linux/gethostid.c index 2e20f034dc..ee0190e7f9 100644 --- a/sysdeps/unix/sysv/linux/gethostid.c +++ b/sysdeps/unix/sysv/linux/gethostid.c @@ -102,12 +102,12 @@ gethostid (void) { int ret = __gethostbyname_r (hostname, &hostbuf, tmpbuf.data, tmpbuf.length, &hp, &herr); - if (ret == 0) + if (ret == 0 && hp != NULL) break; else { /* Enlarge the buffer on ERANGE. */ - if (herr == NETDB_INTERNAL && errno == ERANGE) + if (ret != 0 && herr == NETDB_INTERNAL && errno == ERANGE) { if (!scratch_buffer_grow (&tmpbuf)) return 0; |