From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794061905; b=qXGnRrQKFZnwoBOpvlKz7AmMysBaHAlNwwdgP4XsoPW7ZvCCwAkt4xyvQHt9R95nfh8f 5ZUtV6Pj6i9a3FcWK9jKOBpP1rS+Mdwf2LGgFv4hHivKtX8geSjKhtYWr+Ez6sEtM1jke tQ2zY8fzxf7SSuvwAImgXFkuWdKAPVaDbuUBskWbtqyMDl2A+k2iLE+F6yA8Tp/hjW0W2 wnLv42a5jXLMh1fJgB4QSWiQ7+iXB21jRxa2e3ODq5RmZJu4sPO0OsGLvxFNSzbDDtdDJ ysOT4Ae7w5hEbWeEwtVF9PC3g9VOsHQuxUWqF+RFscieLSdQJZwSodbozzWeDqRy4+g== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794061905; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=rQPJwmQODfkIY9YTCIQrpxpzSoa7QfYbWhP43dA0olU=; b=RK4GtfPr3R5mcTS5RA2J093OchK2IuWKad8I1Zse7rp76BuewZy9VpFYI8swSNhtZMWI //1PBOZcBCTwlji2hqNd0NcuoqGhAdDQtJRyEOuWNczk/A3t+Rp16bAaAHXVLmqsPGcEm tHRW4KgrM1KhP0kLSmHsNiuXnpwmC4HYO/eBw2wBemvawb7OIhp/ue+n045F+f2P4RoJr RJ2xFyBpylZZJnGVi+THQ0M62UYkffhhYddSZo8xKO806SyyYZAqmn6p+ZW1QWtgMXq9b eKZOTVmXkFGwaBZGDGB5Oo7cVq7AZibNR3Cngj2tgJMbcEXy8wwdlvHoyUKfRu6Oi3A== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=Q+tShNUH; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5B09E606A32C; Sat, 7 Nov 2026 14:31:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=Q+tShNUH Received: by smtp.kernel.org (Postfix) with ESMTPSA id 099E71F0089F; Sat, 7 Nov 2026 14:31:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794061905; bh=rQPJwmQODfkIY9YTCIQrpxpzSoa7QfYbWhP43dA0olU=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Q+tShNUHPMLZlqxq3SgXSKb8kfe3P/1iWM6GOSfFIkVaDtk5Ij9zYwyr0cvNUJczW qEUZarqiKxYkwm9h41BWIOA/C4YmWY/dOpBDraSrOu5mRIRqXAy77FWgsgUvC6ucc+ OFwQxOGJbqoNu2psAkkjEMrikKJ2kZle7gYjY8zE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, hanzhijian , Brian Masney , Sasha Levin Subject: [PATCH 6.12 0915/1536] clk: mstar: msc313-mpll: fix off-by-one in clock array allocation Date: Sat, 7 Nov 2026 08:48:51 -0500 Message-ID: <20261107135023.335401503@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134957.653319350@linuxfoundation.org> References: <20261107134957.653319350@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: hanzhijian [ Upstream commit 712b75152c00a8ab0c56dbfe34caf88e3870ddde ] The hws array of mpll->clk_data is allocated with struct_size() using ARRAY_SIZE(output_dividers) as the element count, giving it 7 elements. But the probe function stores the MPLL clock at hws[0] and one fixed-factor clock for each output divider at hws[i + 1] for i in [0, ARRAY_SIZE(output_dividers)), writing 8 elements in total. The final write to hws[7] is past the end of the allocation. clk_data->num is also set to NUMOUTPUTS (8), so the clock framework reads hws[0..7], again accessing hws[7] out of bounds. Use NUMOUTPUTS as the element count so the allocation matches the number of clocks actually stored and exposed. Found by smatch: drivers/clk/mstar/clk-msc313-mpll.c:134 msc313_mpll_probe() error: buffer overflow 'mpll->clk_data->hws' 7 <= 7 Fixes: bef7a78da716 ("clk: mstar: MStar/SigmaStar MPLL driver") Cc: stable@vger.kernel.org Signed-off-by: hanzhijian Reviewed-by: Brian Masney Signed-off-by: Brian Masney Signed-off-by: Sasha Levin --- drivers/clk/mstar/clk-msc313-mpll.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/clk/mstar/clk-msc313-mpll.c b/drivers/clk/mstar/clk-msc313-mpll.c index 61beb4e875250..bd45aa0aec011 100644 --- a/drivers/clk/mstar/clk-msc313-mpll.c +++ b/drivers/clk/mstar/clk-msc313-mpll.c @@ -105,7 +105,7 @@ static int msc313_mpll_probe(struct platform_device *pdev) return PTR_ERR(mpll->loop_div_second); mpll->clk_data = devm_kzalloc(dev, struct_size(mpll->clk_data, hws, - ARRAY_SIZE(output_dividers)), GFP_KERNEL); + NUMOUTPUTS), GFP_KERNEL); if (!mpll->clk_data) return -ENOMEM; -- 2.53.0