diff options
Diffstat (limited to 'meta/recipes-devtools/qemu/qemu/0003-vhost-user-gpu-fix-memory-leak-in-vg_resource_attach.patch')
-rw-r--r-- | meta/recipes-devtools/qemu/qemu/0003-vhost-user-gpu-fix-memory-leak-in-vg_resource_attach.patch | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/meta/recipes-devtools/qemu/qemu/0003-vhost-user-gpu-fix-memory-leak-in-vg_resource_attach.patch b/meta/recipes-devtools/qemu/qemu/0003-vhost-user-gpu-fix-memory-leak-in-vg_resource_attach.patch new file mode 100644 index 0000000000..1718486405 --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/0003-vhost-user-gpu-fix-memory-leak-in-vg_resource_attach.patch @@ -0,0 +1,48 @@ +CVE: CVE-2021-3544 +Upstream-Status: Backport +Signed-off-by: Ross Burton <ross.burton@arm.com> + +From b9f79858a614d95f5de875d0ca31096eaab72c3b Mon Sep 17 00:00:00 2001 +From: Li Qiang <liq3ea@163.com> +Date: Sat, 15 May 2021 20:03:58 -0700 +Subject: [PATCH 3/7] vhost-user-gpu: fix memory leak in + vg_resource_attach_backing (CVE-2021-3544) +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Check whether the 'res' has already been attach_backing to avoid +memory leak. + +Fixes: CVE-2021-3544 +Reported-by: Li Qiang <liq3ea@163.com> +virtio-gpu fix: 204f01b309 ("virtio-gpu: fix memory leak +in resource attach backing") + +Signed-off-by: Li Qiang <liq3ea@163.com> +Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> +Message-Id: <20210516030403.107723-4-liq3ea@163.com> +Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> +--- + contrib/vhost-user-gpu/vhost-user-gpu.c | 5 +++++ + 1 file changed, 5 insertions(+) + +diff --git a/contrib/vhost-user-gpu/vhost-user-gpu.c b/contrib/vhost-user-gpu/vhost-user-gpu.c +index b5e153d0d6..0437e52b64 100644 +--- a/contrib/vhost-user-gpu/vhost-user-gpu.c ++++ b/contrib/vhost-user-gpu/vhost-user-gpu.c +@@ -489,6 +489,11 @@ vg_resource_attach_backing(VuGpu *g, + return; + } + ++ if (res->iov) { ++ cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; ++ return; ++ } ++ + ret = vg_create_mapping_iov(g, &ab, cmd, &res->iov); + if (ret != 0) { + cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; +-- +2.25.1 + |