diff options
Diffstat (limited to 'patches/glibc-2.23/0001-CVE-2016-3075-Stack-overflow-in-_nss_dns_getnetbynam.patch')
-rw-r--r-- | patches/glibc-2.23/0001-CVE-2016-3075-Stack-overflow-in-_nss_dns_getnetbynam.patch | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/patches/glibc-2.23/0001-CVE-2016-3075-Stack-overflow-in-_nss_dns_getnetbynam.patch b/patches/glibc-2.23/0001-CVE-2016-3075-Stack-overflow-in-_nss_dns_getnetbynam.patch new file mode 100644 index 0000000..0d5f50b --- /dev/null +++ b/patches/glibc-2.23/0001-CVE-2016-3075-Stack-overflow-in-_nss_dns_getnetbynam.patch @@ -0,0 +1,34 @@ +From: Florian Weimer <fweimer@redhat.com> +Date: Tue, 29 Mar 2016 12:57:56 +0200 +Subject: [PATCH] CVE-2016-3075: Stack overflow in _nss_dns_getnetbyname_r [BZ + #19879] + +The defensive copy is not needed because the name may not alias the +output buffer. +--- + resolv/nss_dns/dns-network.c | 5 +---- + 1 file changed, 1 insertion(+), 4 deletions(-) + +diff --git a/resolv/nss_dns/dns-network.c b/resolv/nss_dns/dns-network.c +index 2eb2f67e66a8..8f301a706b30 100644 +--- a/resolv/nss_dns/dns-network.c ++++ b/resolv/nss_dns/dns-network.c +@@ -118,17 +118,14 @@ _nss_dns_getnetbyname_r (const char *name, struct netent *result, + } net_buffer; + querybuf *orig_net_buffer; + int anslen; +- char *qbuf; + enum nss_status status; + + if (__res_maybe_init (&_res, 0) == -1) + return NSS_STATUS_UNAVAIL; + +- qbuf = strdupa (name); +- + net_buffer.buf = orig_net_buffer = (querybuf *) alloca (1024); + +- anslen = __libc_res_nsearch (&_res, qbuf, C_IN, T_PTR, net_buffer.buf->buf, ++ anslen = __libc_res_nsearch (&_res, name, C_IN, T_PTR, net_buffer.buf->buf, + 1024, &net_buffer.ptr, NULL, NULL, NULL, NULL); + if (anslen < 0) + { |