From a7936c0296d006defcc1dffe335f4792d3120e78 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 8 Aug 2024 11:14:42 +0200 Subject: [PATCH] ALSA: asihpi: Fix potential OOB array access [ Upstream commit 7b986c7430a6bb68d523dac7bfc74cbd5b44ef96 ] ASIHPI driver stores some values in the static array upon a response from the driver, and its index depends on the firmware. We shouldn't trust it blindly. This patch adds a sanity check of the array index to fit in the array size. CVE-2024-50007 Link: https://patch.msgid.link/20240808091454.30846-1-tiwai@suse.de Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin Signed-off-by: Jianping Liu --- sound/pci/asihpi/hpimsgx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/pci/asihpi/hpimsgx.c b/sound/pci/asihpi/hpimsgx.c index 5fb0b98bec30..b9eb597b0278 100644 --- a/sound/pci/asihpi/hpimsgx.c +++ b/sound/pci/asihpi/hpimsgx.c @@ -713,7 +713,7 @@ static u16 HPIMSGX__init(struct hpi_message *phm, phr->error = HPI_ERROR_PROCESSING_MESSAGE; return phr->error; } - if (hr.error == 0) { + if (hr.error == 0 && hr.u.s.adapter_index < HPI_MAX_ADAPTERS) { /* the adapter was created successfully save the mapping for future use */ hpi_entry_points[hr.u.s.adapter_index] = entry_point_func;