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commit 959b2001458bca8f9228014371aad6ccbeb95a68
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Author: Zhi Li <yieli@redhat.com>
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Date: Wed Sep 26 14:05:29 2018 -0400
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getnetconfig.c: fix a BAD_FREE (CWE-763)
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Signed-off-by: Steve Dickson <steved@redhat.com>
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diff --git a/src/getnetconfig.c b/src/getnetconfig.c
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index d67d97d..cfd33c2 100644
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--- a/src/getnetconfig.c
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+++ b/src/getnetconfig.c
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@@ -681,6 +681,7 @@ struct netconfig *ncp;
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{
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struct netconfig *p;
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char *tmp;
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+ char *t;
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u_int i;
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if ((tmp=malloc(MAXNETCONFIGLINE)) == NULL)
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@@ -700,22 +701,21 @@ struct netconfig *ncp;
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*/
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*p = *ncp;
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p->nc_netid = (char *)strcpy(tmp,ncp->nc_netid);
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- tmp = strchr(tmp, 0) + 1;
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- p->nc_protofmly = (char *)strcpy(tmp,ncp->nc_protofmly);
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- tmp = strchr(tmp, 0) + 1;
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- p->nc_proto = (char *)strcpy(tmp,ncp->nc_proto);
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- tmp = strchr(tmp, 0) + 1;
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- p->nc_device = (char *)strcpy(tmp,ncp->nc_device);
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+ t = strchr(tmp, 0) + 1;
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+ p->nc_protofmly = (char *)strcpy(t,ncp->nc_protofmly);
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+ t = strchr(t, 0) + 1;
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+ p->nc_proto = (char *)strcpy(t,ncp->nc_proto);
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+ t = strchr(t, 0) + 1;
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+ p->nc_device = (char *)strcpy(t,ncp->nc_device);
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p->nc_lookups = (char **)malloc((size_t)(p->nc_nlookups+1) * sizeof(char *));
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if (p->nc_lookups == NULL) {
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- free(p->nc_netid);
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free(p);
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free(tmp);
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return(NULL);
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}
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for (i=0; i < p->nc_nlookups; i++) {
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- tmp = strchr(tmp, 0) + 1;
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- p->nc_lookups[i] = (char *)strcpy(tmp,ncp->nc_lookups[i]);
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+ t = strchr(t, 0) + 1;
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+ p->nc_lookups[i] = (char *)strcpy(t,ncp->nc_lookups[i]);
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}
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return(p);
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}
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