linux-kernel - [PATCH 05/10][next] scsi: aacraid: Replace one-element array with flexible-array member in struct sgmapraw

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <9dfcdf55597a49ed7e19ba064f5be424b344e175.1687974498.git.gustavoars@kernel.org>
Date:   Wed, 28 Jun 2023 11:56:12 -0600
From:   "Gustavo A. R. Silva" <gustavoars@...nel.org>
To:     aacraid@...rosemi.com, "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Kees Cook <keescook@...omium.org>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        linux-hardening@...r.kernel.org
Subject: [PATCH 05/10][next] scsi: aacraid: Replace one-element array with
 flexible-array member in struct sgmapraw

Replace one-element array with flexible-array member in struct
sgmapraw.

Issue found with the help of Coccinelle and audited and fixed,
manually.

Link: https://github.com/KSPP/linux/issues/79
Link: https://github.com/ClangBuiltLinux/linux/issues/1851
Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
---
 drivers/scsi/aacraid/aachba.c  | 4 ++--
 drivers/scsi/aacraid/aacraid.h | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c
index fff0550e02e4..b3c0c2255e55 100644
--- a/drivers/scsi/aacraid/aachba.c
+++ b/drivers/scsi/aacraid/aachba.c
@@ -1267,7 +1267,7 @@ static int aac_read_raw_io(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u3
 			return ret;
 		command = ContainerRawIo;
 		fibsize = sizeof(struct aac_raw_io) +
-			((le32_to_cpu(readcmd->sg.count)-1) * sizeof(struct sgentryraw));
+			  le32_to_cpu(readcmd->sg.count) * sizeof(struct sgentryraw);
 	}
 
 	BUG_ON(fibsize > (fib->dev->max_fib_size - sizeof(struct aac_fibhdr)));
@@ -1401,7 +1401,7 @@ static int aac_write_raw_io(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u
 			return ret;
 		command = ContainerRawIo;
 		fibsize = sizeof(struct aac_raw_io) +
-			((le32_to_cpu(writecmd->sg.count)-1) * sizeof (struct sgentryraw));
+			  le32_to_cpu(writecmd->sg.count) * sizeof(struct sgentryraw);
 	}
 
 	BUG_ON(fibsize > (fib->dev->max_fib_size - sizeof(struct aac_fibhdr)));
diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index d1fc1ce2e36d..87015dd2abd9 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -527,7 +527,7 @@ struct user_sgmap64 {
 
 struct sgmapraw {
 	__le32		  count;
-	struct sgentryraw sg[1];
+	struct sgentryraw sg[];
 };
 
 struct user_sgmapraw {
-- 
2.34.1