From: Armin Kuster <akus...@mvista.com> Source: qemu.org MR: 106462 Type: Security Fix Disposition: Backport from https://git.qemu.org/?p=qemu.git;a=commit;h=7564bf7701f00214cdc8a678a9f7df765244def1 ChangeID: b9dc1b656c07d6a0aecaf7680ed33801bd5f6352 Description:
Affects qemu < 5.2.0 Signed-off-by: Armin Kuster <akus...@mvista.com> --- meta/recipes-devtools/qemu/qemu.inc | 1 + .../qemu/qemu/CVE-2020-27617.patch | 49 +++++++++++++++++++ 2 files changed, 50 insertions(+) create mode 100644 meta/recipes-devtools/qemu/qemu/CVE-2020-27617.patch diff --git a/meta/recipes-devtools/qemu/qemu.inc b/meta/recipes-devtools/qemu/qemu.inc index f5e8a9ae49..3113d638d7 100644 --- a/meta/recipes-devtools/qemu/qemu.inc +++ b/meta/recipes-devtools/qemu/qemu.inc @@ -89,6 +89,7 @@ SRC_URI = "https://download.qemu.org/${BPN}-${PV}.tar.xz \ file://CVE-2020-12829_3.patch \ file://CVE-2020-12829_4.patch \ file://CVE-2020-12829_5.patch \ + file://CVE-2020-27617.patch \ " UPSTREAM_CHECK_REGEX = "qemu-(?P<pver>\d+(\.\d+)+)\.tar" diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2020-27617.patch b/meta/recipes-devtools/qemu/qemu/CVE-2020-27617.patch new file mode 100644 index 0000000000..7bfc2beecb --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2020-27617.patch @@ -0,0 +1,49 @@ +From 7564bf7701f00214cdc8a678a9f7df765244def1 Mon Sep 17 00:00:00 2001 +From: Prasad J Pandit <p...@fedoraproject.org> +Date: Wed, 21 Oct 2020 11:35:50 +0530 +Subject: [PATCH] net: remove an assert call in eth_get_gso_type + +eth_get_gso_type() routine returns segmentation offload type based on +L3 protocol type. It calls g_assert_not_reached if L3 protocol is +unknown, making the following return statement unreachable. Remove the +g_assert call, it maybe triggered by a guest user. + +Reported-by: Gaoning Pan <p...@zju.edu.cn> +Signed-off-by: Prasad J Pandit <p...@fedoraproject.org> +Signed-off-by: Jason Wang <jasow...@redhat.com> + +Upsteram-Status: Backport +CVE: CVE-2020-27617 +Signed-off-by: Armin Kuster <akus...@mvista.com> + +--- + net/eth.c | 6 +++--- + 1 file changed, 3 insertions(+), 3 deletions(-) + +diff --git a/net/eth.c b/net/eth.c +index 0c1d413ee2..1e0821c5f8 100644 +--- a/net/eth.c ++++ b/net/eth.c +@@ -16,6 +16,7 @@ + */ + + #include "qemu/osdep.h" ++#include "qemu/log.h" + #include "net/eth.h" + #include "net/checksum.h" + #include "net/tap.h" +@@ -71,9 +72,8 @@ eth_get_gso_type(uint16_t l3_proto, uint8_t *l3_hdr, uint8_t l4proto) + return VIRTIO_NET_HDR_GSO_TCPV6 | ecn_state; + } + } +- +- /* Unsupported offload */ +- g_assert_not_reached(); ++ qemu_log_mask(LOG_UNIMP, "%s: probably not GSO frame, " ++ "unknown L3 protocol: 0x%04"PRIx16"\n", __func__, l3_proto); + + return VIRTIO_NET_HDR_GSO_NONE | ecn_state; + } +-- +2.25.1 + -- 2.25.1
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