diff options
Diffstat (limited to 'meta-xilinx-bsp/recipes-devtools/qemu/qemu/CVE-2020-24352.patch')
| -rw-r--r-- | meta-xilinx-bsp/recipes-devtools/qemu/qemu/CVE-2020-24352.patch | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/meta-xilinx-bsp/recipes-devtools/qemu/qemu/CVE-2020-24352.patch b/meta-xilinx-bsp/recipes-devtools/qemu/qemu/CVE-2020-24352.patch new file mode 100644 index 00000000..861ff6c3 --- /dev/null +++ b/meta-xilinx-bsp/recipes-devtools/qemu/qemu/CVE-2020-24352.patch @@ -0,0 +1,52 @@ +From ca1f9cbfdce4d63b10d57de80fef89a89d92a540 Mon Sep 17 00:00:00 2001 +From: Prasad J Pandit <pjp@fedoraproject.org> +Date: Wed, 21 Oct 2020 16:08:18 +0530 +Subject: [PATCH 1/1] ati: check x y display parameter values + +The source and destination x,y display parameters in ati_2d_blt() +may run off the vga limits if either of s->regs.[src|dst]_[xy] is +zero. Check the parameter values to avoid potential crash. + +Reported-by: Gaoning Pan <pgn@zju.edu.cn> +Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org> +Message-id: 20201021103818.1704030-1-ppandit@redhat.com +Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> + +Upstream-Status: Backport [ https://git.qemu.org/?p=qemu.git;a=commitdiff;h=ca1f9cbfdce4d63b10d57de80fef89a89d92a540;hp=2ddafce7f797082ad216657c830afd4546f16e37 ] +CVE: CVE-2020-24352 +Signed-off-by: Chee Yang Lee <chee.yang.lee@intel.com> +--- + hw/display/ati_2d.c | 10 ++++++---- + 1 file changed, 6 insertions(+), 4 deletions(-) + +diff --git a/hw/display/ati_2d.c b/hw/display/ati_2d.c +index 23a8ae0..4dc10ea 100644 +--- a/hw/display/ati_2d.c ++++ b/hw/display/ati_2d.c +@@ -75,8 +75,9 @@ void ati_2d_blt(ATIVGAState *s) + dst_stride *= bpp; + } + uint8_t *end = s->vga.vram_ptr + s->vga.vram_size; +- if (dst_bits >= end || dst_bits + dst_x + (dst_y + s->regs.dst_height) * +- dst_stride >= end) { ++ if (dst_x > 0x3fff || dst_y > 0x3fff || dst_bits >= end ++ || dst_bits + dst_x ++ + (dst_y + s->regs.dst_height) * dst_stride >= end) { + qemu_log_mask(LOG_UNIMP, "blt outside vram not implemented\n"); + return; + } +@@ -107,8 +108,9 @@ void ati_2d_blt(ATIVGAState *s) + src_bits += s->regs.crtc_offset & 0x07ffffff; + src_stride *= bpp; + } +- if (src_bits >= end || src_bits + src_x + +- (src_y + s->regs.dst_height) * src_stride >= end) { ++ if (src_x > 0x3fff || src_y > 0x3fff || src_bits >= end ++ || src_bits + src_x ++ + (src_y + s->regs.dst_height) * src_stride >= end) { + qemu_log_mask(LOG_UNIMP, "blt outside vram not implemented\n"); + return; + } +-- +1.8.3.1 + |