From patchwork Tue Sep 17 10:53:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aleksandr Mishin X-Patchwork-Id: 829268 Received: from mx1.t-argos.ru (mx1.t-argos.ru [109.73.34.58]) (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 4BA0A219ED; Tue, 17 Sep 2024 10:55:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=109.73.34.58 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726570507; cv=none; b=C9SnCRIkMDJ6f42C6Dx2AGPqqfrmS1k/9N6AB3hmWe6c2KlM1yiV53hhPJ6ZXOUKNhKj8GLJEVOSRlIoMPGHS2avq0B3emXdVaHMJf2nM5ThwKY9dZOfaZ7kS8F+FMEBGA2y2UrQ6iJN3x0/cN+4Ne6iZLU+FHrAvzwAwRBGyEI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726570507; c=relaxed/simple; bh=CLl1v7tNL9sqp0wNarKO6L4gl8/2HIzkr1LFz2APFpg=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=um8YBpZp+uDIeoGErqbzoUrjYgXWmoLXOPIQTuReUMHrVwczS/fclUb5+JEKESAno7WWD2yIuhhxIPnUbEY/93LMLariEpjFvobpx3/bRQ7UV++/2lfJt/a5/ITnOSBDWiWa0M27d/g9aQwZ9uSt0wxrhITr2/CXK53+k82n1G8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=t-argos.ru; spf=pass smtp.mailfrom=t-argos.ru; dkim=pass (2048-bit key) header.d=t-argos.ru header.i=@t-argos.ru header.b=jo9LQE5I; arc=none smtp.client-ip=109.73.34.58 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=t-argos.ru Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=t-argos.ru Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=t-argos.ru header.i=@t-argos.ru header.b="jo9LQE5I" Received: from mx1.t-argos.ru (localhost [127.0.0.1]) by mx1.t-argos.ru (Postfix) with ESMTP id DD1BF100002; Tue, 17 Sep 2024 13:54:43 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=t-argos.ru; s=mail; t=1726570483; bh=VrqSC7yyHWGVkvMWSkMvKGyaXmdoFYc4NAZw5E45oko=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type; b=jo9LQE5Iqpv2u8buJiBFdhlCTalp5+7kGDnTiJXjcFMbdLDQ8QUu3mrj+uDUJp77o YBN936hLRsnXnIzlzF4KmfybUkHd0MRA9z686BQKovjAh5FwI7NXH52WG54oWS0QPr tfucJJhg41dPpxV2MWsUuADZDRbl1Q0mIHK6IZ14HVgAl12UYdnQJzBLQHYop1f3Qg BuNPOQVOEpjUzkmdc03GO2g4lDtm4BV5rYVFhz9TGwmCiDHR75ML1Tyeqk/o0/bcPv Un5DEq5WYWG++HgKoEJ8NnBAboC+k32OftIfcQf5/Gxa1QSJU/LMvJCXlno6HH4LyP B0yP+eU4kr3Ww== Received: from mx1.t-argos.ru.ru (mail.t-argos.ru [172.17.13.212]) by mx1.t-argos.ru (Postfix) with ESMTP; Tue, 17 Sep 2024 13:54:10 +0300 (MSK) Received: from Comp.ta.t-argos.ru (172.17.44.124) by ta-mail-02 (172.17.13.212) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Tue, 17 Sep 2024 13:53:50 +0300 From: Aleksandr Mishin To: Linus Walleij CC: Aleksandr Mishin , Marcel Holtmann , Luiz Augusto von Dentz , , , Subject: [PATCH] Bluetooth: btbcm: Handle memory allocation failure in btbcm_get_board_name() Date: Tue, 17 Sep 2024 13:53:31 +0300 Message-ID: <20240917105331.21945-1-amishin@t-argos.ru> X-Mailer: git-send-email 2.30.2 Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: ta-mail-02.ta.t-argos.ru (172.17.13.212) To ta-mail-02 (172.17.13.212) X-KSMG-Rule-ID: 1 X-KSMG-Message-Action: clean X-KSMG-AntiSpam-Lua-Profiles: 187796 [Sep 17 2024] X-KSMG-AntiSpam-Version: 6.1.1.5 X-KSMG-AntiSpam-Envelope-From: amishin@t-argos.ru X-KSMG-AntiSpam-Rate: 0 X-KSMG-AntiSpam-Status: not_detected X-KSMG-AntiSpam-Method: none X-KSMG-AntiSpam-Auth: dkim=none X-KSMG-AntiSpam-Info: LuaCore: 34 0.3.34 8a1fac695d5606478feba790382a59668a4f0039, {Tracking_from_domain_doesnt_match_to}, mx1.t-argos.ru.ru:7.1.1; d41d8cd98f00b204e9800998ecf8427e.com:7.1.1; t-argos.ru:7.1.1; 127.0.0.199:7.1.2, FromAlignment: s X-MS-Exchange-Organization-SCL: -1 X-KSMG-AntiSpam-Interceptor-Info: scan successful X-KSMG-AntiPhishing: Clean, bases: 2024/09/17 10:04:00 X-KSMG-AntiVirus: Kaspersky Secure Mail Gateway, version 1.1.2.30, bases: 2024/09/17 09:54:00 #26602246 X-KSMG-AntiVirus-Status: Clean, skipped In btbcm_get_board_name() devm_kstrdup() can return NULL due to memory allocation failure. Add NULL return check to prevent NULL dereference. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: 63fac3343b99 ("Bluetooth: btbcm: Support per-board firmware variants") Signed-off-by: Aleksandr Mishin --- drivers/bluetooth/btbcm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/bluetooth/btbcm.c b/drivers/bluetooth/btbcm.c index f9a7c790d7e2..84273b7f02e1 100644 --- a/drivers/bluetooth/btbcm.c +++ b/drivers/bluetooth/btbcm.c @@ -554,6 +554,8 @@ static const char *btbcm_get_board_name(struct device *dev) /* get rid of any '/' in the compatible string */ board_type = devm_kstrdup(dev, tmp, GFP_KERNEL); + if (!board_type) + return NULL; strreplace(board_type, '/', '-'); of_node_put(root);