diff options
Diffstat (limited to 'meta/recipes-devtools/qemu/qemu/CVE-2021-4207.patch')
-rw-r--r-- | meta/recipes-devtools/qemu/qemu/CVE-2021-4207.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2021-4207.patch b/meta/recipes-devtools/qemu/qemu/CVE-2021-4207.patch new file mode 100644 index 0000000000..8418246247 --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2021-4207.patch | |||
@@ -0,0 +1,43 @@ | |||
1 | From 9569f5cb5b4bffa9d3ebc8ba7da1e03830a9a895 Mon Sep 17 00:00:00 2001 | ||
2 | From: Mauro Matteo Cascella <mcascell@redhat.com> | ||
3 | Date: Thu, 7 Apr 2022 10:11:06 +0200 | ||
4 | Subject: [PATCH] display/qxl-render: fix race condition in qxl_cursor | ||
5 | (CVE-2021-4207) | ||
6 | MIME-Version: 1.0 | ||
7 | Content-Type: text/plain; charset=UTF-8 | ||
8 | Content-Transfer-Encoding: 8bit | ||
9 | |||
10 | Avoid fetching 'width' and 'height' a second time to prevent possible | ||
11 | race condition. Refer to security advisory | ||
12 | https://starlabs.sg/advisories/22-4207/ for more information. | ||
13 | |||
14 | Fixes: CVE-2021-4207 | ||
15 | Signed-off-by: Mauro Matteo Cascella <mcascell@redhat.com> | ||
16 | Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> | ||
17 | Message-Id: <20220407081106.343235-1-mcascell@redhat.com> | ||
18 | Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> | ||
19 | |||
20 | https://gitlab.com/qemu-project/qemu/-/commit/9569f5cb | ||
21 | CVE: CVE-2021-4207 | ||
22 | Upstream-Status: Backport | ||
23 | Signed-off-by: Chee Yang Lee <chee.yang.lee@intel.com> | ||
24 | --- | ||
25 | hw/display/qxl-render.c | 2 +- | ||
26 | 1 file changed, 1 insertion(+), 1 deletion(-) | ||
27 | |||
28 | diff --git a/hw/display/qxl-render.c b/hw/display/qxl-render.c | ||
29 | index d28849b121..237ed293ba 100644 | ||
30 | --- a/hw/display/qxl-render.c | ||
31 | +++ b/hw/display/qxl-render.c | ||
32 | @@ -266,7 +266,7 @@ static QEMUCursor *qxl_cursor(PCIQXLDevice *qxl, QXLCursor *cursor, | ||
33 | } | ||
34 | break; | ||
35 | case SPICE_CURSOR_TYPE_ALPHA: | ||
36 | - size = sizeof(uint32_t) * cursor->header.width * cursor->header.height; | ||
37 | + size = sizeof(uint32_t) * c->width * c->height; | ||
38 | qxl_unpack_chunks(c->data, size, qxl, &cursor->chunk, group_id); | ||
39 | if (qxl->debug > 2) { | ||
40 | cursor_print_ascii_art(c, "qxl/alpha"); | ||
41 | -- | ||
42 | GitLab | ||
43 | |||