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Message-Id: <1379707768-1804-69-git-send-email-kamal@canonical.com> Date: Fri, 20 Sep 2013 13:09:03 -0700 From: Kamal Mostafa <kamal@...onical.com> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org, kernel-team@...ts.ubuntu.com Cc: Miklos Szeredi <mszeredi@...e.cz>, Kamal Mostafa <kamal@...onical.com> Subject: [PATCH 68/93] fuse: readdir: check for slash in names 3.8.13.10 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Miklos Szeredi <mszeredi@...e.cz> commit efeb9e60d48f7778fdcad4a0f3ad9ea9b19e5dfd upstream. Userspace can add names containing a slash character to the directory listing. Don't allow this as it could cause all sorts of trouble. Signed-off-by: Miklos Szeredi <mszeredi@...e.cz> [ kamal: backport to 3.8 (no dirplus) ] Signed-off-by: Kamal Mostafa <kamal@...onical.com> --- fs/fuse/dir.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index 54a24fc..146276a 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -1148,6 +1148,8 @@ static int parse_dirfile(char *buf, size_t nbytes, struct file *file, return -EIO; if (reclen > nbytes) break; + if (memchr(dirent->name, '/', dirent->namelen) != NULL) + return -EIO; over = filldir(dstbuf, dirent->name, dirent->namelen, file->f_pos, dirent->ino, dirent->type); -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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