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46 lines
1.6 KiB
46 lines
1.6 KiB
From 058dfbaed97c8e09ac4f3f7a1655b64ab3cf0144 Mon Sep 17 00:00:00 2001
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From: Greg Hudson <ghudson@mit.edu>
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Date: Wed, 21 Jul 2021 13:44:30 -0400
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Subject: [PATCH] Fix defcred leak in krb5 gss_inquire_cred()
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Commit 1cd2821c19b2b95e39d5fc2f451a035585a40fa5 altered the memory
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management of krb5_gss_inquire_cred(), introducing defcred to act as
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an owner pointer when the function must acquire a default credential.
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The commit neglected to update the code to release the default cred
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along the successful path. The old code does not trigger because
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cred_handle is now reassigned, so the default credential is leaked.
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Reported by Pavel Březina.
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(a minimal alternative to commit 593e16448e1af23eef74689afe06a7bcc86e79c7)
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ticket: 9016
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version_fixed: 1.18.4
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(cherry picked from commit b92be484630b38e26f5ee4bd67973fbd7627009c)
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---
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src/lib/gssapi/krb5/inq_cred.c | 4 +---
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1 file changed, 1 insertion(+), 3 deletions(-)
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diff --git a/src/lib/gssapi/krb5/inq_cred.c b/src/lib/gssapi/krb5/inq_cred.c
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index a8f2541102..cd8384d08c 100644
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--- a/src/lib/gssapi/krb5/inq_cred.c
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+++ b/src/lib/gssapi/krb5/inq_cred.c
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@@ -197,9 +197,7 @@ krb5_gss_inquire_cred(minor_status, cred_handle, name, lifetime_ret,
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mechs = GSS_C_NO_OID_SET;
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}
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- if (cred_handle == GSS_C_NO_CREDENTIAL)
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- krb5_gss_release_cred(minor_status, (gss_cred_id_t *)&cred);
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-
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+ krb5_gss_release_cred(minor_status, &defcred);
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krb5_free_context(context);
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*minor_status = 0;
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return((lifetime == 0)?GSS_S_CREDENTIALS_EXPIRED:GSS_S_COMPLETE);
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--
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2.44.0
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