diff options
Diffstat (limited to 'meta')
| -rw-r--r-- | meta/recipes-devtools/qemu/qemu/CVE-2016-2857.patch | 51 | ||||
| -rw-r--r-- | meta/recipes-devtools/qemu/qemu_2.5.0.bb | 1 |
2 files changed, 52 insertions, 0 deletions
diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2016-2857.patch b/meta/recipes-devtools/qemu/qemu/CVE-2016-2857.patch new file mode 100644 index 0000000000..73cfa2a1eb --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2016-2857.patch @@ -0,0 +1,51 @@ +From 362786f14a753d8a5256ef97d7c10ed576d6572b Mon Sep 17 00:00:00 2001 +From: Prasad J Pandit <pjp@fedoraproject.org> +Date: Wed, 2 Mar 2016 17:29:58 +0530 +Subject: [PATCH] net: check packet payload length + +While computing IP checksum, 'net_checksum_calculate' reads +payload length from the packet. It could exceed the given 'data' +buffer size. Add a check to avoid it. + +Reported-by: Liu Ling <liuling-it@360.cn> +Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org> +Signed-off-by: Jason Wang <jasowang@redhat.com> + +Upstream-Status: Backport +CVE: CVE-2016-2857 + +http://git.qemu.org/?p=qemu.git;a=commit;h=362786f14a753d8a5256ef97d7c10ed576d6572b +Signed-off-by: Armin Kuster <akuster@mvista.com> + +--- + net/checksum.c | 10 ++++++++-- + 1 file changed, 8 insertions(+), 2 deletions(-) + +Index: qemu-2.5.0/net/checksum.c +=================================================================== +--- qemu-2.5.0.orig/net/checksum.c ++++ qemu-2.5.0/net/checksum.c +@@ -59,6 +59,11 @@ void net_checksum_calculate(uint8_t *dat + int hlen, plen, proto, csum_offset; + uint16_t csum; + ++ /* Ensure data has complete L2 & L3 headers. */ ++ if (length < 14 + 20) { ++ return; ++ } ++ + if ((data[14] & 0xf0) != 0x40) + return; /* not IPv4 */ + hlen = (data[14] & 0x0f) * 4; +@@ -76,8 +81,9 @@ void net_checksum_calculate(uint8_t *dat + return; + } + +- if (plen < csum_offset+2) +- return; ++ if (plen < csum_offset + 2 || 14 + hlen + plen > length) { ++ return; ++ } + + data[14+hlen+csum_offset] = 0; + data[14+hlen+csum_offset+1] = 0; diff --git a/meta/recipes-devtools/qemu/qemu_2.5.0.bb b/meta/recipes-devtools/qemu/qemu_2.5.0.bb index e9d9a8dce7..76223869b0 100644 --- a/meta/recipes-devtools/qemu/qemu_2.5.0.bb +++ b/meta/recipes-devtools/qemu/qemu_2.5.0.bb @@ -11,6 +11,7 @@ SRC_URI += "file://configure-fix-Darwin-target-detection.patch \ file://CVE-2016-2197.patch \ file://CVE-2016-2198.patch \ file://pathlimit.patch \ + file://CVE-2016-2857.patch \ " SRC_URI_prepend = "http://wiki.qemu-project.org/download/${BP}.tar.bz2" SRC_URI[md5sum] = "f469f2330bbe76e3e39db10e9ac4f8db" |