diff options
Diffstat (limited to 'meta/recipes-devtools/qemu/qemu/0002-virtio-net-fix-map-leaking-on-error-during-receive.patch')
-rw-r--r-- | meta/recipes-devtools/qemu/qemu/0002-virtio-net-fix-map-leaking-on-error-during-receive.patch | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/meta/recipes-devtools/qemu/qemu/0002-virtio-net-fix-map-leaking-on-error-during-receive.patch b/meta/recipes-devtools/qemu/qemu/0002-virtio-net-fix-map-leaking-on-error-during-receive.patch deleted file mode 100644 index 59ccfdd03c..0000000000 --- a/meta/recipes-devtools/qemu/qemu/0002-virtio-net-fix-map-leaking-on-error-during-receive.patch +++ /dev/null @@ -1,43 +0,0 @@ -CVE: CVE-2022-26353 -Upstream-Status: Backport -Signed-off-by: Ross Burton <ross.burton@arm.com> - -From 4d65ecbddd16f38a8cf23b3053ca5c3594f8d4a4 Mon Sep 17 00:00:00 2001 -From: Jason Wang <jasowang@redhat.com> -Date: Tue, 8 Mar 2022 10:42:51 +0800 -Subject: [PATCH 2/2] virtio-net: fix map leaking on error during receive - -Commit bedd7e93d0196 ("virtio-net: fix use after unmap/free for sg") -tries to fix the use after free of the sg by caching the virtqueue -elements in an array and unmap them at once after receiving the -packets, But it forgot to unmap the cached elements on error which -will lead to leaking of mapping and other unexpected results. - -Fixing this by detaching the cached elements on error. This addresses -CVE-2022-26353. - -Reported-by: Victor Tom <vv474172261@gmail.com> -Cc: qemu-stable@nongnu.org -Fixes: CVE-2022-26353 -Fixes: bedd7e93d0196 ("virtio-net: fix use after unmap/free for sg") -Reviewed-by: Michael S. Tsirkin <mst@redhat.com> -Signed-off-by: Jason Wang <jasowang@redhat.com> ---- - hw/net/virtio-net.c | 1 + - 1 file changed, 1 insertion(+) - -diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c -index f2014d5ea0..e1f4748831 100644 ---- a/hw/net/virtio-net.c -+++ b/hw/net/virtio-net.c -@@ -1862,6 +1862,7 @@ static ssize_t virtio_net_receive_rcu(NetClientState *nc, const uint8_t *buf, - - err: - for (j = 0; j < i; j++) { -+ virtqueue_detach_element(q->rx_vq, elems[j], lens[j]); - g_free(elems[j]); - } - --- -2.25.1 - |