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Red Hat Bugzilla – Attachment 1480181 Details for
Bug 1624542
Fix use-after-free in rpc.statd monitor list when insertion fails for existing entry
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patch to fix statd use-after-free
statd_monitor.patch (text/plain), 821 bytes, created by
Frank Sorenson
on 2018-09-01 05:12:44 UTC
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Description:
patch to fix statd use-after-free
Filename:
MIME Type:
Creator:
Frank Sorenson
Created:
2018-09-01 05:12:44 UTC
Size:
821 bytes
patch
obsolete
>Author: Frank Sorenson <sorenson@redhat.com> >Date: 2018-08-31 23:42:37 -0500 > > statd: fix use-after-free in monitor list if insertion fails > > If nsm_insert_monitored_host() fails while saving the record > to stable storage, we can't just assume the entry was new. Existing > records must be removed from the list before being freed. > > Signed-off-by: Frank Sorenson <sorenson@redhat.com> > >diff --git a/utils/statd/monitor.c b/utils/statd/monitor.c >index 45c4346..9400048 100644 >--- a/utils/statd/monitor.c >+++ b/utils/statd/monitor.c >@@ -197,7 +197,7 @@ sm_mon_1_svc(struct mon *argp, struct svc_req *rqstp) > > if (!nsm_insert_monitored_host(dnsname, > (struct sockaddr *)(char *)&my_addr, argp)) { >- nlist_free(NULL, clnt); >+ nlist_free(existing ? &rtnl : NULL, clnt); > goto failure; > } >
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