[PATCH 11/22] [PATCH] selinux: check for failed kmalloc in security_sid_to_context()

[Chris Wright <chrisw@sous-sol.org>]

-stable review patch.  If anyone has any objections, please let us know.
------------------

Check for NULL kmalloc return value before writing to it.

Signed-off-by: "Serge E. Hallyn" <serue@us.ibm.com>
Acked-by: James Morris <jmorris@namei.org>
Cc: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

 security/selinux/ss/services.c |    4 ++++
 1 file changed, 4 insertions(+)

--- linux-2.6.16.16.orig/security/selinux/ss/services.c
+++ linux-2.6.16.16/security/selinux/ss/services.c
@@ -592,6 +592,10 @@ int security_sid_to_context(u32 sid, cha
 
 			*scontext_len = strlen(initial_sid_to_string[sid]) + 1;
 			scontextp = kmalloc(*scontext_len,GFP_ATOMIC);
+			if (!scontextp) {
+				rc = -ENOMEM;
+				goto out;
+			}
 			strcpy(scontextp, initial_sid_to_string[sid]);
 			*scontext = scontextp;
 			goto out;

--
-
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