Messages in this thread | | | Subject | Re: [PATCH] selinux: fix memory leak on node_ptr on error return path | From | Colin Ian King <> | Date | Tue, 22 Mar 2016 21:38:15 +0000 |
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On 22/03/16 21:35, Paul Moore wrote: > On Tue, Mar 22, 2016 at 4:28 PM, Serge E. Hallyn <serge@hallyn.com> wrote: >> Quoting Colin King (colin.king@canonical.com): >>> From: Colin Ian King <colin.king@canonical.com> >>> >>> node_ptr is not being free'd if the list allocation fails, fix >>> this by kfree'ing it before exiting on the error path. >>> >>> Signed-off-by: Colin Ian King <colin.king@canonical.com> >> >> Hi, >> >> I'm not very familiar with this code any more, but are you sure >> this is needed and doesn't cause a new bug? It *looks* like >> the avtab_insert_nonunique() actually inserts the node_ptr >> into the policydb, and the policydb is the one that should >> eventually free it. > > Exactly. cond_insertf() calls avtab_insert_nonunique() which calls > avtab_insert_node() which adds the node to the avtab. The avtab will > get cleaned up later by the error handling code in the cond_insertf() > call chain. > My bad, apologies.
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