From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 4523C1863 for ; Wed, 28 Dec 2022 15:36:45 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9D644C433F0; Wed, 28 Dec 2022 15:36:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1672241805; bh=KzbOqu0S9jUEVPFhOZpxJcEZDgSm+A3Hd0Wzrm6/Wl8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=piBCgdP5nDmm/Ma4E4Pm0avBB0ZghaeTIMTToRPkdPWa/tneusOsjBIZcFpP0V2CH Sues6JHTaUcfq8RvIBxJ4yOQc+GcDopYaABbEq3sJH5kL/UqysuaL7yvsSryBefGby EZjZB+WmCjM3WzuCcak6paOcdrtRdaSdJqbtVsb4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Xiu Jianfeng , Roberto Sassu , Mimi Zohar , Sasha Levin Subject: [PATCH 6.0 0329/1073] ima: Fix misuse of dereference of pointer in template_desc_init_fields() Date: Wed, 28 Dec 2022 15:31:57 +0100 Message-Id: <20221228144336.941422753@linuxfoundation.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20221228144328.162723588@linuxfoundation.org> References: <20221228144328.162723588@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Xiu Jianfeng [ Upstream commit 25369175ce84813dd99d6604e710dc2491f68523 ] The input parameter @fields is type of struct ima_template_field ***, so when allocates array memory for @fields, the size of element should be sizeof(**field) instead of sizeof(*field). Actually the original code would not cause any runtime error, but it's better to make it logically right. Fixes: adf53a778a0a ("ima: new templates management mechanism") Signed-off-by: Xiu Jianfeng Reviewed-by: Roberto Sassu Signed-off-by: Mimi Zohar Signed-off-by: Sasha Levin --- security/integrity/ima/ima_template.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/security/integrity/ima/ima_template.c b/security/integrity/ima/ima_template.c index c25079faa208..195ac18f0927 100644 --- a/security/integrity/ima/ima_template.c +++ b/security/integrity/ima/ima_template.c @@ -245,11 +245,11 @@ int template_desc_init_fields(const char *template_fmt, } if (fields && num_fields) { - *fields = kmalloc_array(i, sizeof(*fields), GFP_KERNEL); + *fields = kmalloc_array(i, sizeof(**fields), GFP_KERNEL); if (*fields == NULL) return -ENOMEM; - memcpy(*fields, found_fields, i * sizeof(*fields)); + memcpy(*fields, found_fields, i * sizeof(**fields)); *num_fields = i; } -- 2.35.1