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authorStephen Smalley <sds@tycho.nsa.gov>2007-08-29 08:51:50 -0400
committerJames Morris <jmorris@localhost.localdomain>2007-08-30 20:22:47 -0400
commit4ac212ad4e8fafc22fa147fc255ff5fa5435cf33 (patch)
tree9ab703429a2b24ccafc6748c1e0f2147f2b47114
parenta1c582d0720f2eff61043e90711767decf37b917 (diff)
SELinux: clear parent death signal on SID transitions
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>
-rw-r--r--security/selinux/hooks.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index d8bc4172819c..36946629b6ca 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -1907,6 +1907,9 @@ static void selinux_bprm_post_apply_creds(struct linux_binprm *bprm)
1907 spin_unlock_irq(&current->sighand->siglock); 1907 spin_unlock_irq(&current->sighand->siglock);
1908 } 1908 }
1909 1909
1910 /* Always clear parent death signal on SID transitions. */
1911 current->pdeath_signal = 0;
1912
1910 /* Check whether the new SID can inherit resource limits 1913 /* Check whether the new SID can inherit resource limits
1911 from the old SID. If not, reset all soft limits to 1914 from the old SID. If not, reset all soft limits to
1912 the lower of the current task's hard limit and the init 1915 the lower of the current task's hard limit and the init