linux-kernel - [PATCH] trivial: make mmap_min

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]

Message-ID: <20100421140033.GA8389@ihatethathostname.lab.bos.redhat.com>
Date:	Wed, 21 Apr 2010 10:00:33 -0400
From:	Kyle McMartin <kmcmartin@...hat.com>
To:	eparis@...hat.com
Cc:	kees@...onical.com, cebbert@...hat.com,
	linux-kernel@...r.kernel.org
Subject: [PATCH] trivial: make mmap_min_addr perms 600

Chuck points out that mmap_min_addr is 644...

CAP_SYS_RAWIO will deny users read/write to the file, let's let them see
that this is intended.

Signed-off-by: Kyle McMartin <kyle@...hat.com>
---
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 8686b0f..5868481 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1209,7 +1209,7 @@ static struct ctl_table vm_table[] = {
 		.procname	= "mmap_min_addr",
 		.data		= &dac_mmap_min_addr,
 		.maxlen		= sizeof(unsigned long),
-		.mode		= 0644,
+		.mode		= 0600,
 		.proc_handler	= mmap_min_addr_handler,
 	},
 #endif
--
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/