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 @@ +From 9569f5cb5b4bffa9d3ebc8ba7da1e03830a9a895 Mon Sep 17 00:00:00 2001 +From: Mauro Matteo Cascella <mcascell@redhat.com> +Date: Thu, 7 Apr 2022 10:11:06 +0200 +Subject: [PATCH] display/qxl-render: fix race condition in qxl_cursor + (CVE-2021-4207) +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Avoid fetching 'width' and 'height' a second time to prevent possible +race condition. Refer to security advisory +https://starlabs.sg/advisories/22-4207/ for more information. + +Fixes: CVE-2021-4207 +Signed-off-by: Mauro Matteo Cascella <mcascell@redhat.com> +Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> +Message-Id: <20220407081106.343235-1-mcascell@redhat.com> +Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> + +https://gitlab.com/qemu-project/qemu/-/commit/9569f5cb +CVE: CVE-2021-4207 +Upstream-Status: Backport +Signed-off-by: Chee Yang Lee <chee.yang.lee@intel.com> +--- + hw/display/qxl-render.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/hw/display/qxl-render.c b/hw/display/qxl-render.c +index d28849b121..237ed293ba 100644 +--- a/hw/display/qxl-render.c ++++ b/hw/display/qxl-render.c +@@ -266,7 +266,7 @@ static QEMUCursor *qxl_cursor(PCIQXLDevice *qxl, QXLCursor *cursor, + } + break; + case SPICE_CURSOR_TYPE_ALPHA: +- size = sizeof(uint32_t) * cursor->header.width * cursor->header.height; ++ size = sizeof(uint32_t) * c->width * c->height; + qxl_unpack_chunks(c->data, size, qxl, &cursor->chunk, group_id); + if (qxl->debug > 2) { + cursor_print_ascii_art(c, "qxl/alpha"); +-- +GitLab + |