On Mon, Feb 20, 2017 at 03:40:38PM +0100, Greg Kurz wrote: > The local_lsetxattr() callback is vulnerable to symlink attacks because > it calls lsetxattr() which follows symbolic links in all path elements but > the rightmost one. > > This patch converts local_lsetxattr() to rely on opendir_nofollow() and > fsetxattrat_nofollow() instead. > > This partly fixes CVE-2016-9602. > > Signed-off-by: Greg Kurz <gr...@kaod.org> > --- > hw/9pfs/9p-posix-acl.c | 18 ++++-------------- > hw/9pfs/9p-xattr-user.c | 8 +------- > hw/9pfs/9p-xattr.c | 8 +------- > 3 files changed, 6 insertions(+), 28 deletions(-)
Reviewed-by: Stefan Hajnoczi <stefa...@redhat.com>
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