linux-kernel - [PATCH 0/5] exec: binfmt_misc: fix use-after-free, kill iname[BINPRM_BUF

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 22 Sep 2017 16:36:19 +0200
From:   Oleg Nesterov <oleg@...hat.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Al Viro <viro@...iv.linux.org.uk>
Cc:     Ben Woodard <woodard@...hat.com>,
        James Bottomley <James.Bottomley@...senPartnership.com>,
        Jim Foraker <foraker1@...l.gov>,
        Kees Cook <keescook@...omium.org>,
        Travis Gummels <tgummels@...hat.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 0/5] exec: binfmt_misc: fix use-after-free, kill
 iname[BINPRM_BUF_SIZE]

Note: 5/5 depends on

	-extern int bprm_change_interp(char *interp, struct linux_binprm *bprm);
	+extern int bprm_change_interp(const char *interp, struct linux_binprm *bprm);

change in

	[PATCH] exec: load_script: kill the onstack interp[BINPRM_BUF_SIZE] array
	https://marc.info/?l=linux-kernel&m=150575251328591

I sent before.

Looks like this code was always wrong, then 948b701a607f ("binfmt_misc: add persistent
opened binary handler for containers") added more problems.

Oleg.

 fs/binfmt_misc.c | 56 ++++++++++++++++++++++++++------------------------------
 1 file changed, 26 insertions(+), 30 deletions(-)