diff options
Diffstat (limited to 'meta/recipes-devtools/qemu/qemu/CVE-2021-3416_8.patch')
| -rw-r--r-- | meta/recipes-devtools/qemu/qemu/CVE-2021-3416_8.patch | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2021-3416_8.patch b/meta/recipes-devtools/qemu/qemu/CVE-2021-3416_8.patch new file mode 100644 index 0000000000..ed716468dc --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2021-3416_8.patch @@ -0,0 +1,44 @@ +From 023ce62f0a788ad3a8233c7a828554bceeafd031 Mon Sep 17 00:00:00 2001 +From: Alexander Bulekov <alxndr@bu.edu> +Date: Mon, 1 Mar 2021 10:33:34 -0500 +Subject: [PATCH 08/10] pcnet: switch to use qemu_receive_packet() for loopback +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +This patch switches to use qemu_receive_packet() which can detect +reentrancy and return early. + +This is intended to address CVE-2021-3416. + +Cc: Prasad J Pandit <ppandit@redhat.com> +Cc: qemu-stable@nongnu.org +Buglink: https://bugs.launchpad.net/qemu/+bug/1917085 +Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com +Signed-off-by: Alexander Bulekov <alxndr@bu.edu> +Signed-off-by: Jason Wang <jasowang@redhat.com> + +Upstream-Status: Backport [99ccfaa1edafd79f7a3a0ff7b58ae4da7c514928] +CVE: CVE-2021-3416 + +Signed-off-by: Sakib Sajal <sakib.sajal@windriver.com> +--- + hw/net/pcnet.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/hw/net/pcnet.c b/hw/net/pcnet.c +index f3f18d859..dcd3fc494 100644 +--- a/hw/net/pcnet.c ++++ b/hw/net/pcnet.c +@@ -1250,7 +1250,7 @@ txagain: + if (BCR_SWSTYLE(s) == 1) + add_crc = !GET_FIELD(tmd.status, TMDS, NOFCS); + s->looptest = add_crc ? PCNET_LOOPTEST_CRC : PCNET_LOOPTEST_NOCRC; +- pcnet_receive(qemu_get_queue(s->nic), s->buffer, s->xmit_pos); ++ qemu_receive_packet(qemu_get_queue(s->nic), s->buffer, s->xmit_pos); + s->looptest = 0; + } else { + if (s->nic) { +-- +2.29.2 + |