aboutsummaryrefslogtreecommitdiffstats
path: root/common/recipes-kernel/linux/linux-yocto-4.14.71/5155-drm-amdgpu-fix-integer-overflow-test-in-amdgpu_bo_li.patch
diff options
context:
space:
mode:
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/5155-drm-amdgpu-fix-integer-overflow-test-in-amdgpu_bo_li.patch')
-rw-r--r--common/recipes-kernel/linux/linux-yocto-4.14.71/5155-drm-amdgpu-fix-integer-overflow-test-in-amdgpu_bo_li.patch38
1 files changed, 38 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/5155-drm-amdgpu-fix-integer-overflow-test-in-amdgpu_bo_li.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/5155-drm-amdgpu-fix-integer-overflow-test-in-amdgpu_bo_li.patch
new file mode 100644
index 00000000..1228b712
--- /dev/null
+++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/5155-drm-amdgpu-fix-integer-overflow-test-in-amdgpu_bo_li.patch
@@ -0,0 +1,38 @@
+From ad340cfac93205d30681cf83c9ebf7128767efb1 Mon Sep 17 00:00:00 2001
+From: Dan Carpenter <dan.carpenter@oracle.com>
+Date: Fri, 10 Aug 2018 18:50:32 +0800
+Subject: [PATCH 5155/5725] drm/amdgpu: fix integer overflow test in
+ amdgpu_bo_list_create()
+
+We accidentally left out the size of the amdgpu_bo_list struct. It
+could lead to memory corruption on 32 bit systems. You'd have to
+pick the absolute maximum and set "num_entries == 59652323" then size
+would wrap to 16 bytes.
+
+Fixes: 920990cb080a ("drm/amdgpu: allocate the bo_list array after the list")
+Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
+Reviewed-by: Huang Rui <ray.huang@amd.com>
+Reviewed-by: Bas Nieuwenhuizen <basni@chromium.org>
+Signed-off-by: Huang Rui <ray.huang@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+---
+ drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c
+index b603249..06fa232 100644
+--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c
++++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_bo_list.c
+@@ -67,7 +67,8 @@ int amdgpu_bo_list_create(struct amdgpu_device *adev, struct drm_file *filp,
+ unsigned i;
+ int r;
+
+- if (num_entries > SIZE_MAX / sizeof(struct amdgpu_bo_list_entry))
++ if (num_entries > (SIZE_MAX - sizeof(struct amdgpu_bo_list))
++ / sizeof(struct amdgpu_bo_list_entry))
+ return -EINVAL;
+
+ size = sizeof(struct amdgpu_bo_list);
+--
+2.7.4
+