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Message-ID: <lsq.1382345188.180584956@decadent.org.uk> Date: Mon, 21 Oct 2013 09:46:28 +0100 From: Ben Hutchings <ben@...adent.org.uk> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org CC: akpm@...ux-foundation.org, "Miklos Szeredi" <mszeredi@...e.cz> Subject: [PATCH 3.2 053/149] fuse: readdir: check for slash in names 3.2.52-rc1 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> [bwh: Backported to 3.2: drop changes to parse_dirplusfile() which we don't have] Signed-off-by: Ben Hutchings <ben@...adent.org.uk> --- fs/fuse/dir.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -1063,6 +1063,8 @@ static int parse_dirfile(char *buf, size 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); -- 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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