From: Bernd Kuhls Date: Sun, 24 Apr 2016 19:50:19 +0000 (+0200) Subject: package/glibc: Add security patches to fix CVE-2016-3075 X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f63ec06a1364ed7f23cafee83f5b05f693cea05c;p=buildroot.git package/glibc: Add security patches to fix CVE-2016-3075 Signed-off-by: Bernd Kuhls Signed-off-by: Thomas Petazzoni --- diff --git a/package/glibc/2.22/0003-fix-CVE-2016-3075.patch b/package/glibc/2.22/0003-fix-CVE-2016-3075.patch new file mode 100644 index 0000000000..1ceb1f62f0 --- /dev/null +++ b/package/glibc/2.22/0003-fix-CVE-2016-3075.patch @@ -0,0 +1,44 @@ +From 883dceebc8f11921a9890211a4e202e5be17562f Mon Sep 17 00:00:00 2001 +From: Florian Weimer +Date: Tue, 29 Mar 2016 12:57:56 +0200 +Subject: [PATCH 1/1] 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. + +(cherry picked from commit 317b199b4aff8cfa27f2302ab404d2bb5032b9a4) + +Signed-off-by: Bernd Kuhls +(downloaded from upstream git repo and removed changes to Changelog: + https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=883dceebc8f11921a9890211a4e202e5be17562f;hp=5a1a5f0dd2744044801c91bf2588444c29cda533) +--- + ChangeLog | 7 +++++++ + resolv/nss_dns/dns-network.c | 5 +---- + 2 files changed, 8 insertions(+), 4 deletions(-) + +diff --git a/resolv/nss_dns/dns-network.c b/resolv/nss_dns/dns-network.c +index 00f4490..89f8783 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) + { +-- +1.7.1 + diff --git a/package/glibc/2.23/0001-fix-CVE-2016-3075.patch b/package/glibc/2.23/0001-fix-CVE-2016-3075.patch new file mode 100644 index 0000000000..6b07116cb2 --- /dev/null +++ b/package/glibc/2.23/0001-fix-CVE-2016-3075.patch @@ -0,0 +1,47 @@ +From 146b58d11fddbef15b888906e3be4f33900c416f Mon Sep 17 00:00:00 2001 +From: Florian Weimer +Date: Tue, 29 Mar 2016 12:57:56 +0200 +Subject: [PATCH 1/1] 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. + +(cherry picked from commit 317b199b4aff8cfa27f2302ab404d2bb5032b9a4) +(cherry picked from commit 883dceebc8f11921a9890211a4e202e5be17562f) + +Signed-off-by: Bernd Kuhls +(downloaded from upstream git repo and removed changes to files + Changelog and NEWS: + https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=146b58d11fddbef15b888906e3be4f33900c416f;hp=0eb234232eaf925fe4dca3bd60a3e1b4a7ab2882) +--- + ChangeLog | 7 +++++++ + NEWS | 10 ++++++++-- + resolv/nss_dns/dns-network.c | 5 +---- + 3 files changed, 16 insertions(+), 6 deletions(-) + +diff --git a/resolv/nss_dns/dns-network.c b/resolv/nss_dns/dns-network.c +index 2eb2f67..8f301a7 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) + { +-- +1.7.1 +