diff options
Diffstat (limited to 'meta/recipes-devtools/qemu/qemu/CVE-2021-3546.patch')
-rw-r--r-- | meta/recipes-devtools/qemu/qemu/CVE-2021-3546.patch | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2021-3546.patch b/meta/recipes-devtools/qemu/qemu/CVE-2021-3546.patch new file mode 100644 index 0000000000..f8da428233 --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2021-3546.patch | |||
@@ -0,0 +1,47 @@ | |||
1 | From 9f22893adcb02580aee5968f32baa2cd109b3ec2 Mon Sep 17 00:00:00 2001 | ||
2 | From: Li Qiang <liq3ea@163.com> | ||
3 | Date: Sat, 15 May 2021 20:04:02 -0700 | ||
4 | Subject: [PATCH] vhost-user-gpu: fix OOB write in 'virgl_cmd_get_capset' | ||
5 | (CVE-2021-3546) | ||
6 | MIME-Version: 1.0 | ||
7 | Content-Type: text/plain; charset=UTF-8 | ||
8 | Content-Transfer-Encoding: 8bit | ||
9 | |||
10 | If 'virgl_cmd_get_capset' set 'max_size' to 0, | ||
11 | the 'virgl_renderer_fill_caps' will write the data after the 'resp'. | ||
12 | This patch avoid this by checking the returned 'max_size'. | ||
13 | |||
14 | virtio-gpu fix: abd7f08b23 ("display: virtio-gpu-3d: check | ||
15 | virgl capabilities max_size") | ||
16 | |||
17 | Fixes: CVE-2021-3546 | ||
18 | Reported-by: Li Qiang <liq3ea@163.com> | ||
19 | Reviewed-by: Prasad J Pandit <pjp@fedoraproject.org> | ||
20 | Signed-off-by: Li Qiang <liq3ea@163.com> | ||
21 | Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> | ||
22 | Message-Id: <20210516030403.107723-8-liq3ea@163.com> | ||
23 | Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> | ||
24 | |||
25 | Upstream-Status: Backport | ||
26 | CVE: CVE-2021-3546 | ||
27 | Signed-off-by: Armin Kuster <akuster@mvista.com> | ||
28 | |||
29 | --- | ||
30 | contrib/vhost-user-gpu/virgl.c | 4 ++++ | ||
31 | 1 file changed, 4 insertions(+) | ||
32 | |||
33 | Index: qemu-4.2.0/contrib/vhost-user-gpu/virgl.c | ||
34 | =================================================================== | ||
35 | --- qemu-4.2.0.orig/contrib/vhost-user-gpu/virgl.c | ||
36 | +++ qemu-4.2.0/contrib/vhost-user-gpu/virgl.c | ||
37 | @@ -174,6 +174,10 @@ virgl_cmd_get_capset(VuGpu *g, | ||
38 | |||
39 | virgl_renderer_get_cap_set(gc.capset_id, &max_ver, | ||
40 | &max_size); | ||
41 | + if (!max_size) { | ||
42 | + cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; | ||
43 | + return; | ||
44 | + } | ||
45 | resp = g_malloc0(sizeof(*resp) + max_size); | ||
46 | |||
47 | resp->hdr.type = VIRTIO_GPU_RESP_OK_CAPSET; | ||