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[85.250.214.4]) by smtp.gmail.com with ESMTPSA id iv19-20020a05600c549300b004186c58a9b5sm15271353wmb.44.2024.04.21.23.40.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 21 Apr 2024 23:40:11 -0700 (PDT) From: Amir Goldstein To: Miklos Szeredi Cc: Bernd Schubert , Sweet Tea Dorminy , Daniel Rosenberg , linux-fsdevel@vger.kernel.org Subject: [PATCH] fuse: verify zero padding in fuse_backing_map Date: Mon, 22 Apr 2024 09:40:08 +0300 Message-Id: <20240422064008.936525-1-amir73il@gmail.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 To allow us extending the interface in the future. Fixes: 44350256ab94 ("fuse: implement ioctls to manage backing files") Signed-off-by: Amir Goldstein --- fs/fuse/passthrough.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/fuse/passthrough.c b/fs/fuse/passthrough.c index 1567f0323858..9666d13884ce 100644 --- a/fs/fuse/passthrough.c +++ b/fs/fuse/passthrough.c @@ -225,7 +225,7 @@ int fuse_backing_open(struct fuse_conn *fc, struct fuse_backing_map *map) goto out; res = -EINVAL; - if (map->flags) + if (map->flags || map->padding) goto out; file = fget(map->fd);