diff options
| author | Stephen Smalley <sds@tycho.nsa.gov> | 2007-08-29 08:51:50 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-10-10 10:50:16 -0700 |
| commit | 880da58fc49a4e021d49b4aeae3b2c6b51e211fa (patch) | |
| tree | 8839985fc26a8f52bbf83843f72eb7c7eac7754f | |
| parent | ceda57cf82ec93444e7d86755e6d43ab11c1b50d (diff) | |
SELinux: clear parent death signal on SID transitions
commit 4ac212ad4e8fafc22fa147fc255ff5fa5435cf33 upstream.
Clear parent death signal on SID transitions to prevent unauthorized
signaling between SIDs.
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Acked-by: Eric Paris <eparis@parisplace.org>
Signed-off-by: James Morris <jmorris@localhost.localdomain>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | security/selinux/hooks.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index ad8dd4e8657e..1ee7ca9ed575 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -1906,6 +1906,9 @@ static void selinux_bprm_post_apply_creds(struct linux_binprm *bprm) spin_unlock_irq(¤t->sighand->siglock); } + /* Always clear parent death signal on SID transitions. */ + current->pdeath_signal = 0; + /* Check whether the new SID can inherit resource limits from the old SID. If not, reset all soft limits to the lower of the current task's hard limit and the init |