diff options
Diffstat (limited to 'meta/recipes-devtools/qemu/qemu/0007-vhost-user-gpu-fix-OOB-write-in-virgl_cmd_get_capset.patch')
| -rw-r--r-- | meta/recipes-devtools/qemu/qemu/0007-vhost-user-gpu-fix-OOB-write-in-virgl_cmd_get_capset.patch | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/meta/recipes-devtools/qemu/qemu/0007-vhost-user-gpu-fix-OOB-write-in-virgl_cmd_get_capset.patch b/meta/recipes-devtools/qemu/qemu/0007-vhost-user-gpu-fix-OOB-write-in-virgl_cmd_get_capset.patch new file mode 100644 index 0000000000..33e6a66193 --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/0007-vhost-user-gpu-fix-OOB-write-in-virgl_cmd_get_capset.patch @@ -0,0 +1,49 @@ +CVE: CVE-2021-3546 +Upstream-Status: Backport +Signed-off-by: Ross Burton <ross.burton@arm.com> + +From 9f22893adcb02580aee5968f32baa2cd109b3ec2 Mon Sep 17 00:00:00 2001 +From: Li Qiang <liq3ea@163.com> +Date: Sat, 15 May 2021 20:04:02 -0700 +Subject: [PATCH 7/7] vhost-user-gpu: fix OOB write in 'virgl_cmd_get_capset' + (CVE-2021-3546) +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +If 'virgl_cmd_get_capset' set 'max_size' to 0, +the 'virgl_renderer_fill_caps' will write the data after the 'resp'. +This patch avoid this by checking the returned 'max_size'. + +virtio-gpu fix: abd7f08b23 ("display: virtio-gpu-3d: check +virgl capabilities max_size") + +Fixes: CVE-2021-3546 +Reported-by: Li Qiang <liq3ea@163.com> +Reviewed-by: Prasad J Pandit <pjp@fedoraproject.org> +Signed-off-by: Li Qiang <liq3ea@163.com> +Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> +Message-Id: <20210516030403.107723-8-liq3ea@163.com> +Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> +--- + contrib/vhost-user-gpu/virgl.c | 4 ++++ + 1 file changed, 4 insertions(+) + +diff --git a/contrib/vhost-user-gpu/virgl.c b/contrib/vhost-user-gpu/virgl.c +index a16a311d80..7172104b19 100644 +--- a/contrib/vhost-user-gpu/virgl.c ++++ b/contrib/vhost-user-gpu/virgl.c +@@ -177,6 +177,10 @@ virgl_cmd_get_capset(VuGpu *g, + + virgl_renderer_get_cap_set(gc.capset_id, &max_ver, + &max_size); ++ if (!max_size) { ++ cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; ++ return; ++ } + resp = g_malloc0(sizeof(*resp) + max_size); + + resp->hdr.type = VIRTIO_GPU_RESP_OK_CAPSET; +-- +2.25.1 + |