From: Chee Yang Lee <[email protected]> Signed-off-by: Chee Yang Lee <[email protected]> --- meta/recipes-devtools/qemu/qemu.inc | 1 + .../qemu/qemu/CVE-2020-16092.patch | 45 +++++++++++++++++++ 2 files changed, 46 insertions(+) create mode 100644 meta/recipes-devtools/qemu/qemu/CVE-2020-16092.patch
diff --git a/meta/recipes-devtools/qemu/qemu.inc b/meta/recipes-devtools/qemu/qemu.inc index e0ea5ad477..7ce89c0023 100644 --- a/meta/recipes-devtools/qemu/qemu.inc +++ b/meta/recipes-devtools/qemu/qemu.inc @@ -47,6 +47,7 @@ SRC_URI = "https://download.qemu.org/${BPN}-${PV}.tar.xz \ file://CVE-2020-15863.patch \ file://CVE-2020-14364.patch \ file://CVE-2020-14415.patch \ + file://CVE-2020-16092.patch \ " UPSTREAM_CHECK_REGEX = "qemu-(?P<pver>\d+(\.\d+)+)\.tar" diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2020-16092.patch b/meta/recipes-devtools/qemu/qemu/CVE-2020-16092.patch new file mode 100644 index 0000000000..5085a28a4f --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2020-16092.patch @@ -0,0 +1,45 @@ +From 035e69b063835a5fd23cacabd63690a3d84532a8 Mon Sep 17 00:00:00 2001 +From: Mauro Matteo Cascella <[email protected]> +Date: Sat, 1 Aug 2020 18:42:38 +0200 +Subject: [PATCH] hw/net/net_tx_pkt: fix assertion failure in + net_tx_pkt_add_raw_fragment() + +An assertion failure issue was found in the code that processes network packets +while adding data fragments into the packet context. It could be abused by a +malicious guest to abort the QEMU process on the host. This patch replaces the +affected assert() with a conditional statement, returning false if the current +data fragment exceeds max_raw_frags. + +Reported-by: Alexander Bulekov <[email protected]> +Reported-by: Ziming Zhang <[email protected]> +Reviewed-by: Dmitry Fleytman <[email protected]> +Signed-off-by: Mauro Matteo Cascella <[email protected]> +Signed-off-by: Jason Wang <[email protected]> + + +Upstream-Status: Backport [https://git.qemu.org/?p=qemu.git;a=commit;h=035e69b063835a5fd23cacabd63690a3d84532a8] +CVE: CVE-2020-16092 +Signed-off-by: Chee Yang Lee <[email protected]> +--- + hw/net/net_tx_pkt.c | 5 ++++- + 1 file changed, 4 insertions(+), 1 deletion(-) + +diff --git a/hw/net/net_tx_pkt.c b/hw/net/net_tx_pkt.c +index 9560e4a..da262ed 100644 +--- a/hw/net/net_tx_pkt.c ++++ b/hw/net/net_tx_pkt.c +@@ -379,7 +379,10 @@ bool net_tx_pkt_add_raw_fragment(struct NetTxPkt *pkt, hwaddr pa, + hwaddr mapped_len = 0; + struct iovec *ventry; + assert(pkt); +- assert(pkt->max_raw_frags > pkt->raw_frags); ++ ++ if (pkt->raw_frags >= pkt->max_raw_frags) { ++ return false; ++ } + + if (!len) { + return true; +-- +1.8.3.1 + -- 2.17.1
-=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#142647): https://lists.openembedded.org/g/openembedded-core/message/142647 Mute This Topic: https://lists.openembedded.org/mt/76927423/21656 Group Owner: [email protected] Unsubscribe: https://lists.openembedded.org/g/openembedded-core/unsub [[email protected]] -=-=-=-=-=-=-=-=-=-=-=-
