Paul Moore
2018-03-21 11:18:55 UTC
Hi Paul,
security/selinux/hooks.c
6b4f3d01052a ("usb, signal, security: only pass the cred, not the secid, to kill_pid_info_as_cred and security_task_kill")
6b6bc6205d98 ("selinux: wrap AVC state")
from the selinux tree.
I fixed it up (see below) and can carry the fix as necessary. This
is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging. You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.
--
Cheers,
Stephen Rothwell
diff --cc security/selinux/hooks.c
index fdd523e575e3,21b377aef69a..000000000000
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@@ -4050,11 -4164,10 +4170,12 @@@ static int selinux_task_kill(struct tas
perm = PROCESS__SIGNULL; /* null signal; existence test */
else
perm = signal_to_av(sig);
- if (!secid)
+ if (!cred)
secid = current_sid();
+ else
+ secid = cred_sid(cred);
- return avc_has_perm(secid, task_sid(p), SECCLASS_PROCESS, perm, NULL);
+ return avc_has_perm(&selinux_state,
+ secid, task_sid(p), SECCLASS_PROCESS, perm, NULL);
}
static void selinux_task_to_inode(struct task_struct *p,
Thanks Stephen, that looks correct to me.security/selinux/hooks.c
6b4f3d01052a ("usb, signal, security: only pass the cred, not the secid, to kill_pid_info_as_cred and security_task_kill")
6b6bc6205d98 ("selinux: wrap AVC state")
from the selinux tree.
I fixed it up (see below) and can carry the fix as necessary. This
is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging. You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.
--
Cheers,
Stephen Rothwell
diff --cc security/selinux/hooks.c
index fdd523e575e3,21b377aef69a..000000000000
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@@ -4050,11 -4164,10 +4170,12 @@@ static int selinux_task_kill(struct tas
perm = PROCESS__SIGNULL; /* null signal; existence test */
else
perm = signal_to_av(sig);
- if (!secid)
+ if (!cred)
secid = current_sid();
+ else
+ secid = cred_sid(cred);
- return avc_has_perm(secid, task_sid(p), SECCLASS_PROCESS, perm, NULL);
+ return avc_has_perm(&selinux_state,
+ secid, task_sid(p), SECCLASS_PROCESS, perm, NULL);
}
static void selinux_task_to_inode(struct task_struct *p,
--
paul moore
www.paul-moore.com
paul moore
www.paul-moore.com