From patchwork Mon Apr 27 12:34:39 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 6279691 Return-Path: X-Original-To: patchwork-alsa-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 61EE6BF4A6 for ; Mon, 27 Apr 2015 12:35:37 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8423420443 for ; Mon, 27 Apr 2015 12:35:36 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id 46FC720148 for ; Mon, 27 Apr 2015 12:35:35 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id 6FE9F2651E3; Mon, 27 Apr 2015 14:35:34 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from alsa0.perex.cz (localhost [IPv6:::1]) by alsa0.perex.cz (Postfix) with ESMTP id F36D326523B; Mon, 27 Apr 2015 14:35:03 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 157762652AE; Mon, 27 Apr 2015 14:35:02 +0200 (CEST) Received: from mx2.suse.de (cantor2.suse.de [195.135.220.15]) by alsa0.perex.cz (Postfix) with ESMTP id D6D3E26522E for ; Mon, 27 Apr 2015 14:34:40 +0200 (CEST) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 9E44BAB22 for ; Mon, 27 Apr 2015 12:34:40 +0000 (UTC) From: Takashi Iwai To: alsa-devel@alsa-project.org Date: Mon, 27 Apr 2015 14:34:39 +0200 Message-Id: <1430138079-7793-1-git-send-email-tiwai@suse.de> X-Mailer: git-send-email 2.3.5 Subject: [alsa-devel] [PATCH] ALSA: emu10k1: Fix card shortname string buffer overflow X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP Some models provide too long string for the shortname that has 32bytes including the terminator, and it results in a non-terminated string exposed to the user-space. This isn't too critical, though, as the string is stopped at the succeeding longname string. This patch fixes such entries by dropping "SB" prefix (it's enough to fit within 32 bytes, so far). Meanwhile, it also changes strcpy() with strlcpy() to make sure that this kind of problem won't happen in future, too. Cc: Signed-off-by: Takashi Iwai --- sound/pci/emu10k1/emu10k1.c | 6 ++++-- sound/pci/emu10k1/emu10k1_main.c | 4 ++-- 2 files changed, 6 insertions(+), 4 deletions(-) diff --git a/sound/pci/emu10k1/emu10k1.c b/sound/pci/emu10k1/emu10k1.c index 37d0220a094c..db7a2e5e4a14 100644 --- a/sound/pci/emu10k1/emu10k1.c +++ b/sound/pci/emu10k1/emu10k1.c @@ -183,8 +183,10 @@ static int snd_card_emu10k1_probe(struct pci_dev *pci, } #endif - strcpy(card->driver, emu->card_capabilities->driver); - strcpy(card->shortname, emu->card_capabilities->name); + strlcpy(card->driver, emu->card_capabilities->driver, + sizeof(card->driver)); + strlcpy(card->shortname, emu->card_capabilities->name, + sizeof(card->shortname)); snprintf(card->longname, sizeof(card->longname), "%s (rev.%d, serial:0x%x) at 0x%lx, irq %i", card->shortname, emu->revision, emu->serial, emu->port, emu->irq); diff --git a/sound/pci/emu10k1/emu10k1_main.c b/sound/pci/emu10k1/emu10k1_main.c index 54079f5d5673..4f8cf5e7e45f 100644 --- a/sound/pci/emu10k1/emu10k1_main.c +++ b/sound/pci/emu10k1/emu10k1_main.c @@ -1446,7 +1446,7 @@ static struct snd_emu_chip_details emu_chip_details[] = { * */ {.vendor = 0x1102, .device = 0x0008, .subsystem = 0x20011102, - .driver = "Audigy2", .name = "SB Audigy 2 ZS Notebook [SB0530]", + .driver = "Audigy2", .name = "Audigy 2 ZS Notebook [SB0530]", .id = "Audigy2", .emu10k2_chip = 1, .ca0108_chip = 1, @@ -1596,7 +1596,7 @@ static struct snd_emu_chip_details emu_chip_details[] = { .adc_1361t = 1, /* 24 bit capture instead of 16bit */ .ac97_chip = 1} , {.vendor = 0x1102, .device = 0x0004, .subsystem = 0x10051102, - .driver = "Audigy2", .name = "SB Audigy 2 Platinum EX [SB0280]", + .driver = "Audigy2", .name = "Audigy 2 Platinum EX [SB0280]", .id = "Audigy2", .emu10k2_chip = 1, .ca0102_chip = 1,