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-rw-r--r--gnu/packages/patches/qemu-CVE-2017-5667.patch46
1 files changed, 46 insertions, 0 deletions
diff --git a/gnu/packages/patches/qemu-CVE-2017-5667.patch b/gnu/packages/patches/qemu-CVE-2017-5667.patch
new file mode 100644
index 0000000000..5adea0d278
--- /dev/null
+++ b/gnu/packages/patches/qemu-CVE-2017-5667.patch
@@ -0,0 +1,46 @@
+Fix CVE-2017-5667 (sdhci OOB access during multi block SDMA transfer):
+
+http://seclists.org/oss-sec/2017/q1/243
+https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5667
+
+Patch copied from upstream source repository:
+
+http://git.qemu-project.org/?p=qemu.git;a=commitdiff;h=42922105beb14c2fc58185ea022b9f72fb5465e9
+
+From 42922105beb14c2fc58185ea022b9f72fb5465e9 Mon Sep 17 00:00:00 2001
+From: Prasad J Pandit <pjp@fedoraproject.org>
+Date: Tue, 7 Feb 2017 18:29:59 +0000
+Subject: [PATCH] sd: sdhci: check data length during dma_memory_read
+
+While doing multi block SDMA transfer in routine
+'sdhci_sdma_transfer_multi_blocks', the 's->fifo_buffer' starting
+index 'begin' and data length 's->data_count' could end up to be same.
+This could lead to an OOB access issue. Correct transfer data length
+to avoid it.
+
+Cc: qemu-stable@nongnu.org
+Reported-by: Jiang Xin <jiangxin1@huawei.com>
+Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
+Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
+Message-id: 20170130064736.9236-1-ppandit@redhat.com
+Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
+---
+ hw/sd/sdhci.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/hw/sd/sdhci.c b/hw/sd/sdhci.c
+index 01fbf228be..5bd5ab6319 100644
+--- a/hw/sd/sdhci.c
++++ b/hw/sd/sdhci.c
+@@ -536,7 +536,7 @@ static void sdhci_sdma_transfer_multi_blocks(SDHCIState *s)
+ boundary_count -= block_size - begin;
+ }
+ dma_memory_read(&address_space_memory, s->sdmasysad,
+- &s->fifo_buffer[begin], s->data_count);
++ &s->fifo_buffer[begin], s->data_count - begin);
+ s->sdmasysad += s->data_count - begin;
+ if (s->data_count == block_size) {
+ for (n = 0; n < block_size; n++) {
+--
+2.11.1
+