diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/4581-drm-amdgpu-df-fix-potential-array-out-of-bounds-read.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.14.71/4581-drm-amdgpu-df-fix-potential-array-out-of-bounds-read.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/4581-drm-amdgpu-df-fix-potential-array-out-of-bounds-read.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/4581-drm-amdgpu-df-fix-potential-array-out-of-bounds-read.patch new file mode 100644 index 00000000..0fb87676 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/4581-drm-amdgpu-df-fix-potential-array-out-of-bounds-read.patch @@ -0,0 +1,36 @@ +From b87c84aecc8e2692b7924be30c6723cd9c269fd7 Mon Sep 17 00:00:00 2001 +From: Colin Ian King <colin.king@canonical.com> +Date: Wed, 30 May 2018 17:41:44 +0100 +Subject: [PATCH 4581/5725] drm/amdgpu/df: fix potential array out-of-bounds + read + +The comparison with the number of elements in array df_v3_7_channel_number +is off-by-one and can produce an array out-of-bounds read if +fb_channel_number is equal to the number of elements of the array. Fix +this by changing the comparison to >= instead of >. + +Detected by CoverityScan, CID#1469489 ("Out-of-bounds read") + +Fixes: 13b581502d51 ("drm/amdgpu/df: implement df v3_6 callback functions (v2)") +Signed-off-by: Colin Ian King <colin.king@canonical.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/amdgpu/df_v3_6.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/drivers/gpu/drm/amd/amdgpu/df_v3_6.c b/drivers/gpu/drm/amd/amdgpu/df_v3_6.c +index 60608b3..d5ebe56 100644 +--- a/drivers/gpu/drm/amd/amdgpu/df_v3_6.c ++++ b/drivers/gpu/drm/amd/amdgpu/df_v3_6.c +@@ -64,7 +64,7 @@ static u32 df_v3_6_get_hbm_channel_number(struct amdgpu_device *adev) + int fb_channel_number; + + fb_channel_number = adev->df_funcs->get_fb_channel_number(adev); +- if (fb_channel_number > ARRAY_SIZE(df_v3_6_channel_number)) ++ if (fb_channel_number >= ARRAY_SIZE(df_v3_6_channel_number)) + fb_channel_number = 0; + + return df_v3_6_channel_number[fb_channel_number]; +-- +2.7.4 + |