diff options
Diffstat (limited to 'sysutils/xen-tools/files/xsa140-qemuu-unstable-7.patch')
| -rw-r--r-- | sysutils/xen-tools/files/xsa140-qemuu-unstable-7.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/sysutils/xen-tools/files/xsa140-qemuu-unstable-7.patch b/sysutils/xen-tools/files/xsa140-qemuu-unstable-7.patch new file mode 100644 index 000000000000..4c0ad7993545 --- /dev/null +++ b/sysutils/xen-tools/files/xsa140-qemuu-unstable-7.patch @@ -0,0 +1,32 @@ +From 9a084807bf6ca7c16d997a236d304111894a6539 Mon Sep 17 00:00:00 2001 +From: Stefan Hajnoczi <stefanha@redhat.com> +Date: Wed, 15 Jul 2015 18:17:04 +0100 +Subject: [PATCH 7/7] rtl8139: check TCP Data Offset field + +The TCP Data Offset field contains the length of the header. Make sure +it is valid and does not exceed the IP data length. + +Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> +--- + hw/net/rtl8139.c | 5 +++++ + 1 file changed, 5 insertions(+) + +diff --git a/hw/net/rtl8139.c b/hw/net/rtl8139.c +index c8f0df9..2df4a51 100644 +--- a/hw/net/rtl8139.c ++++ b/hw/net/rtl8139.c +@@ -2253,6 +2253,11 @@ static int rtl8139_cplus_transmit_one(RTL8139State *s) + + int tcp_hlen = TCP_HEADER_DATA_OFFSET(p_tcp_hdr); + ++ /* Invalid TCP data offset? */ ++ if (tcp_hlen < sizeof(tcp_header) || tcp_hlen > ip_data_len) { ++ goto skip_offload; ++ } ++ + /* ETH_MTU = ip header len + tcp header len + payload */ + int tcp_data_len = ip_data_len - tcp_hlen; + int tcp_chunk_size = ETH_MTU - hlen - tcp_hlen; +-- +2.1.4 + |