From ff917923f4fb9c83717ba135ee47d7e4c1567bb7 Mon Sep 17 00:00:00 2001 From: Muhammad Bilal Date: Tue, 28 Jul 2026 17:54:55 +0500 Subject: staging: rtl8723bs: fix OOB read in rtw_action_frame_parse() rtw_action_frame_parse() takes a frame_len parameter but never actually checks it before indexing into the frame body: const u8 *frame_body = frame + sizeof(struct ieee80211_hdr_3addr); ... c = frame_body[0]; ... a = frame_body[1]; frame_body already points 24 bytes (sizeof(struct ieee80211_hdr_3addr)) into frame, so reading frame_body[0] and frame_body[1] requires frame_len >= 26. A management action frame shorter than that (e.g. exactly 24 bytes, the minimum a malicious peer can send) causes a 1-2 byte out-of-bounds read. This is reachable from rtw_cfg80211_monitor_if_xmit_entry() and cfg80211_rtw_mgmt_tx() in ioctl_cfg80211.c, both of which pass attacker/user-influenced frame buffers and lengths straight through. Add the missing length check before frame_body is dereferenced. Fixes: 554c0a3abf216 ("staging: Add rtl8723bs sdio wifi driver") Cc: stable@vger.kernel.org Signed-off-by: Muhammad Bilal Link: https://patch.msgid.link/20260728125456.32359-3-meatuni001@gmail.com Signed-off-by: Greg Kroah-Hartman --- sound/soc/codecs/chv3-codec.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 sound/soc/codecs/chv3-codec.c (limited to 'sound/soc/codecs/chv3-codec.c') diff --git a/sound/soc/codecs/chv3-codec.c b/sound/soc/codecs/chv3-codec.c new file mode 100644 index 000000000..40020500b --- /dev/null +++ b/sound/soc/codecs/chv3-codec.c @@ -0,0 +1,42 @@ +// SPDX-License-Identifier: GPL-2.0-only +#include +#include + +static struct snd_soc_dai_driver chv3_codec_dai = { + .name = "chv3-codec-hifi", + .capture = { + .stream_name = "Capture", + .channels_min = 8, + .channels_max = 8, + .rates = SNDRV_PCM_RATE_CONTINUOUS, + .formats = SNDRV_PCM_FMTBIT_S32_LE, + }, +}; + +static const struct snd_soc_component_driver soc_component_dev_chv3_codec = { +}; + +static int chv3_codec_probe(struct platform_device *pdev) +{ + return devm_snd_soc_register_component(&pdev->dev, + &soc_component_dev_chv3_codec, &chv3_codec_dai, 1); +} + +static const struct of_device_id chv3_codec_of_match[] = { + { .compatible = "google,chv3-codec", }, + { } +}; +MODULE_DEVICE_TABLE(of, chv3_codec_of_match); + +static struct platform_driver chv3_codec_platform_driver = { + .driver = { + .name = "chv3-codec", + .of_match_table = chv3_codec_of_match, + }, + .probe = chv3_codec_probe, +}; +module_platform_driver(chv3_codec_platform_driver); + +MODULE_DESCRIPTION("ASoC Chameleon v3 codec driver"); +MODULE_AUTHOR("Pawel Anikiel "); +MODULE_LICENSE("GPL"); -- cgit v1.3.1