* FAILED: patch "[PATCH] drm/i915/display: Do not zero past infoframes.vsc" failed to apply to 5.13-stable tree
@ 2021-09-16 13:11 gregkh
0 siblings, 0 replies; only message in thread
From: gregkh @ 2021-09-16 13:11 UTC (permalink / raw)
To: keescook, jose.souza; +Cc: stable
The patch below does not apply to the 5.13-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From c88e2647c5bb45d04dc4302018ebe6ebbf331823 Mon Sep 17 00:00:00 2001
From: Kees Cook <keescook@chromium.org>
Date: Thu, 17 Jun 2021 14:33:01 -0700
Subject: [PATCH] drm/i915/display: Do not zero past infoframes.vsc
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
intel_dp_vsc_sdp_unpack() was using a memset() size (36, struct dp_sdp)
larger than the destination (24, struct drm_dp_vsc_sdp), clobbering
fields in struct intel_crtc_state after infoframes.vsc. Use the actual
target size for the memset().
Fixes: 1b404b7dbb10 ("drm/i915/dp: Read out DP SDPs")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210617213301.1824728-1-keescook@chromium.org
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 5c9222283044..6cc03b9e4321 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -2868,7 +2868,7 @@ static int intel_dp_vsc_sdp_unpack(struct drm_dp_vsc_sdp *vsc,
if (size < sizeof(struct dp_sdp))
return -EINVAL;
- memset(vsc, 0, size);
+ memset(vsc, 0, sizeof(*vsc));
if (sdp->sdp_header.HB0 != 0)
return -EINVAL;
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2021-09-16 13:11 FAILED: patch "[PATCH] drm/i915/display: Do not zero past infoframes.vsc" failed to apply to 5.13-stable tree gregkh
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