[LTP] [PATCH 2/2] Add CVE-2017-18075, pcrypt mishandles freeing instances

[Nicolai Stange <nstange@suse.de>]

Richard Palethorpe <rpalethorpe@suse.com> writes:

> Signed-off-by: Richard Palethorpe <rpalethorpe@suse.com>
> ---
>
> I can not find the original reproducer posted upstream. I assume it was
> created by syzkaller.

Yes: https://groups.google.com/forum/#!topic/syzkaller-bugs/NKn_ivoPOpk

However, this rewrite to crypto's netlink interface might be different
enough such that ...


> diff --git a/testcases/cve/cve-2017-18075.c b/testcases/cve/cve-2017-18075.c
> new file mode 100644
> index 000000000..3723b0655
> --- /dev/null
> +++ b/testcases/cve/cve-2017-18075.c
> @@ -0,0 +1,201 @@
> +/*
> + * Copyright (c) 2018 SUSE
> + * Author: Nicolai Stange <nstange@suse.de>
> + * LTP conversion: Richard Palethorpe <rpalethorpe@suse.com>
> + *
> + * Based on the reproducer posted upstream so other copyrights may
> + * apply.

... this isn't really needed, but I'm not a lawyer.

Thanks,

Nicolai



> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License
> + * as published by the Free Software Foundation; either version 2
> + * of the License, or (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, see <http://www.gnu.org/licenses/>.
> + *
> + * Test for CVE-2017-5754 - pcrypt mishandles freeing instances
> + *
> + * See commit d76c68109f37 crypto: pcrypt - fix freeing pcrypt instances.
> + *
> + * If the bug is present this will most likely crash your kernel.
> + */
> +

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