linux-kernel - ath9k capability=16 won't compile into policy

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 for Android: free password hash cracker in your pocket

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

Message-ID: <dd18b0c30812161426l678b4bcx104efd63797c162d@mail.gmail.com>
Date:	Tue, 16 Dec 2008 14:26:52 -0800
From:	"Justin Mattock" <justinmattock@...il.com>
To:	SE-Linux <selinux@...ho.nsa.gov>,
	tresys <refpolicy@....tresys.com>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: ath9k capability=16 won't compile into policy

I'm not too sure if I should post this with SELinux,
refpolicy, or kernel.org,(or even wpasupplicant);
 so I decided to do all to the best of my knowledge.
when using the ath9k module with the latest git
kernel(or atleast a few days old); and the latest refpolicy (svn)
I'm seeing this avc denial show up:

Dec 16 12:33:32 name kernel: [   20.415785] type=1400
audit(1229459612.411:3): avc:  denied  { sys_module } for  pid=2510
comm="wpa_supplicant" capability=16
scontext=system_u:system_r:system_dbusd_t:s0
tcontext=system_u:system_r:system_dbusd_t:s0 tclass=capability
Dec 16 12:33:32 name kernel: [   20.428494] type=1300
audit(1229459612.411:3): arch=40000003 syscall=54 success=no exit=-19
a0=9 a1=8933 a2=bfadd94c a3=bfadd94c items=0 ppid=1 pid=2510
auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0
fsgid=0 tty=(none) ses=4294967295 comm="wpa_supplicant"
exe="/sbin/wpa_supplicant" subj=system_u:system_r:system_dbusd_t:s0
key=(null)

the allow rule is:(with ath9k module)
allow system_dbusd_t self:capability sys_module;
which in turn will be rejected by checkpolicy
(capability 16)
when compiling the policy.

If I use the madwifi module the avc is similar but produces
allow system_dbusd_t self:capability { sys_admin }
(capability 12)
and will be accepted by checkpolicy.

As for setup I'm using NetworkManager from
intrepid as well as wpasupplicant

Any info would be appreciated so I can test this module out
and feel better knowing the module is not being denied in any
way, that might cause a false positive, or some other weirdness.

regards;
-- 
Justin P. Mattock
--
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/