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| author | cem <cem@FreeBSD.org> | 2016-05-11 23:25:59 +0000 |
|---|---|---|
| committer | cem <cem@FreeBSD.org> | 2016-05-11 23:25:59 +0000 |
| commit | 2bcae162c5c82322e1d0a8c205a96505ca3367b1 (patch) | |
| tree | 8b7981a88f131877ee1ba34c4d4047f36225b0e6 /crypto | |
| parent | 493fc2338c03047098b508c651567e0f6d060bc6 (diff) | |
| download | FreeBSD-src-2bcae162c5c82322e1d0a8c205a96505ca3367b1.zip FreeBSD-src-2bcae162c5c82322e1d0a8c205a96505ca3367b1.tar.gz | |
libkrb5: Fix potential double-free
If krb5_make_principal fails, tmp_creds.server may remain a pointer to freed
memory and then be double-freed. After freeing it the first time, initialize
it to NULL, which causes subsequent krb5_free_principal calls to do the right
thing.
Reported by: Coverity
CID: 1273430
Sponsored by: EMC / Isilon Storage Division
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/heimdal/lib/krb5/get_cred.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/crypto/heimdal/lib/krb5/get_cred.c b/crypto/heimdal/lib/krb5/get_cred.c index e3bb23a..9914fe4 100644 --- a/crypto/heimdal/lib/krb5/get_cred.c +++ b/crypto/heimdal/lib/krb5/get_cred.c @@ -831,6 +831,7 @@ get_cred_kdc_capath_worker(krb5_context context, if(strcmp(tgt_inst, server_realm) == 0) break; krb5_free_principal(context, tmp_creds.server); + tmp_creds.server = NULL; ret = krb5_make_principal(context, &tmp_creds.server, tgt_inst, KRB5_TGS_NAME, server_realm, NULL); if(ret) { |
