This is a note to let you know that I've just added the patch titled
media: venus: hfi: add checks to handle capabilities from firmware
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
media-venus-hfi-add-checks-to-handle-capabilities-from-firmware.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 8d0b89398b7ebc52103e055bf36b60b045f5258f Mon Sep 17 00:00:00 2001
From: Vikash Garodia <quic_vgarodia@xxxxxxxxxxx>
Date: Thu, 10 Aug 2023 07:55:03 +0530
Subject: media: venus: hfi: add checks to handle capabilities from firmware
From: Vikash Garodia <quic_vgarodia@xxxxxxxxxxx>
commit 8d0b89398b7ebc52103e055bf36b60b045f5258f upstream.
The hfi parser, parses the capabilities received from venus firmware and
copies them to core capabilities. Consider below api, for example,
fill_caps - In this api, caps in core structure gets updated with the
number of capabilities received in firmware data payload. If the same api
is called multiple times, there is a possibility of copying beyond the max
allocated size in core caps.
Similar possibilities in fill_raw_fmts and fill_profile_level functions.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 1a73374a04e5 ("media: venus: hfi_parser: add common capability parser")
Signed-off-by: Vikash Garodia <quic_vgarodia@xxxxxxxxxxx>
Signed-off-by: Stanimir Varbanov <stanimir.k.varbanov@xxxxxxxxx>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/media/platform/qcom/venus/hfi_parser.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
--- a/drivers/media/platform/qcom/venus/hfi_parser.c
+++ b/drivers/media/platform/qcom/venus/hfi_parser.c
@@ -89,6 +89,9 @@ static void fill_profile_level(struct ve
{
const struct hfi_profile_level *pl = data;
+ if (cap->num_pl + num >= HFI_MAX_PROFILE_COUNT)
+ return;
+
memcpy(&cap->pl[cap->num_pl], pl, num * sizeof(*pl));
cap->num_pl += num;
}
@@ -114,6 +117,9 @@ fill_caps(struct venus_caps *cap, const
{
const struct hfi_capability *caps = data;
+ if (cap->num_caps + num >= MAX_CAP_ENTRIES)
+ return;
+
memcpy(&cap->caps[cap->num_caps], caps, num * sizeof(*caps));
cap->num_caps += num;
}
@@ -140,6 +146,9 @@ static void fill_raw_fmts(struct venus_c
{
const struct raw_formats *formats = fmts;
+ if (cap->num_fmts + num_fmts >= MAX_FMT_ENTRIES)
+ return;
+
memcpy(&cap->fmts[cap->num_fmts], formats, num_fmts * sizeof(*formats));
cap->num_fmts += num_fmts;
}
@@ -162,6 +171,9 @@ parse_raw_formats(struct venus_core *cor
rawfmts[i].buftype = fmt->buffer_type;
i++;
+ if (i >= MAX_FMT_ENTRIES)
+ return;
+
if (pinfo->num_planes > MAX_PLANES)
break;
Patches currently in stable-queue which might be from quic_vgarodia@xxxxxxxxxxx are
queue-4.19/media-venus-hfi-fix-the-check-to-handle-session-buffer-requirement.patch
queue-4.19/media-venus-hfi-add-checks-to-perform-sanity-on-queue-pointers.patch
queue-4.19/media-venus-hfi_parser-add-check-to-keep-the-number-of-codecs-within-range.patch
queue-4.19/media-venus-hfi-add-checks-to-handle-capabilities-from-firmware.patch
