import UBI krb5-1.18.2-28.el8_10
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SOURCES/Fix-defcred-leak-in-krb5-gss_inquire_cred.patch
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SOURCES/Fix-defcred-leak-in-krb5-gss_inquire_cred.patch
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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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@ -18,7 +18,7 @@ Summary: The Kerberos network authentication system
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Name: krb5
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Version: 1.18.2
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# for prerelease, should be e.g., 0.% {prerelease}.1% { ?dist } (without spaces)
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Release: 27%{?dist}
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Release: 28%{?dist}
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# lookaside-cached sources; two downloads and a build artifact
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Source0: https://web.mit.edu/kerberos/dist/krb5/1.18/krb5-%{version}%{prerelease}.tar.gz
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@ -104,6 +104,7 @@ Patch158: End-connection-on-KDC_ERR_SVC_UNAVAILABLE.patch
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Patch159: Add-request_timeout-configuration-parameter.patch
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Patch160: Wait-indefinitely-on-KDC-TCP-connections.patch
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Patch161: Fix-two-unlikely-memory-leaks.patch
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Patch162: Fix-defcred-leak-in-krb5-gss_inquire_cred.patch
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License: MIT
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URL: http://web.mit.edu/kerberos/www/
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@ -714,6 +715,10 @@ exit 0
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%{_libdir}/libkadm5srv_mit.so.*
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%changelog
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* Tue Apr 09 2024 Julien Rische <jrische@redhat.com> - 1.18.2-28
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- Fix leak of default credentials in gss_inquire_cred()
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Resolves: RHEL-32258
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* Thu Mar 21 2024 Julien Rische <jrische@redhat.com> - 1.18.2-27
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- Fix memory leak in GSSAPI interface
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Resolves: RHEL-27250
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