From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 40A5134389F; Sat, 30 May 2026 17:38:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780162702; cv=none; b=AfYrkmBl8uyfV+iIeIbL4T1jH+UAh5ynzGUiOvRfsvx8Qn5Uf0t5spMZ/G/MCkRdM+r3kvNeEScNHXBmVlo0o6lGs8S4+QVcjEKABds8iCD+F1mUUnNeu+fpHwX14xpARpTcWNTKBeE1ELJ/dxDa+lP6wVc4mzvFkl1b4XoShAo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780162702; c=relaxed/simple; bh=kByyoITatBwucsAyng83N2FI68DsYvPb9DIBOq3egwY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lrpGcVT6uvlUgRaj27PZS72iiIZK8e8l1CgagCVL0mj9OXXK86UTfPdVEutubQQI++L0GFi9wdvguZI9AhN/T1XAhg551Y8i19l5/JmvFL2/hhqNjvMqzn++Nx8shjrlKiNJGxcP6b0YLg0vzSGe5f4dlDBylIUDlAWwX/nyFoM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=m06U6Wyf; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="m06U6Wyf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 82BB11F00893; Sat, 30 May 2026 17:38:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1780162701; bh=mDZ9um9NxgXq3iJAIh10mmYOLWkNrtLJkjb3+G3iMek=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=m06U6WyfoB5gA72RYlxadEGUeePkoDyPRMrnqAwwAtIe/hjWDbdj6UJoTuI4YUSsT myLdRfaOMRGRC8KEyqW5hWGqTKJGprKxfh7dtqN9fYNN5oiEc/0JNt7SQy2Vla7rUs OolRLF1Zm6kzQxZHgD0hxpbiriGr+UY4KLNNEPpM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Pengpeng Hou , Arend van Spriel , Johannes Berg , Sasha Levin Subject: [PATCH 5.15 015/776] wifi: brcmfmac: validate bsscfg indices in IF events Date: Sat, 30 May 2026 17:55:29 +0200 Message-ID: <20260530160240.656384206@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260530160240.228940103@linuxfoundation.org> References: <20260530160240.228940103@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Pengpeng Hou [ Upstream commit 304950a467d83678bd0b0f46331882e2ac23b12d ] brcmf_fweh_handle_if_event() validates the firmware-provided interface index before it touches drvr->iflist[], but it still uses the raw bsscfgidx field as an array index without a matching range check. Reject IF events whose bsscfg index does not fit in drvr->iflist[] before indexing the interface array. Signed-off-by: Pengpeng Hou Acked-by: Arend van Spriel Link: https://patch.msgid.link/20260323074551.93530-1-pengpeng@iscas.ac.cn [add missing wifi prefix] Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c index dac7eb77799bd..e6be192dc0af2 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c @@ -151,6 +151,11 @@ static void brcmf_fweh_handle_if_event(struct brcmf_pub *drvr, bphy_err(drvr, "invalid interface index: %u\n", ifevent->ifidx); return; } + if (ifevent->bsscfgidx >= BRCMF_MAX_IFS) { + bphy_err(drvr, "invalid bsscfg index: %u\n", + ifevent->bsscfgidx); + return; + } ifp = drvr->iflist[ifevent->bsscfgidx]; -- 2.53.0