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nsswitch: fix use-after-free causing segfault in _pam_delete_cred

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BUG: https://bugzilla.samba.org/show_bug.cgi?id=14327

Guenther

Signed-off-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Alexander Bokovoy <ab@samba.org>

Autobuild-User(master): Günther Deschner <gd@samba.org>
Autobuild-Date(master): Mon Mar 30 13:01:20 UTC 2020 on sn-devel-184
This commit is contained in:
Günther Deschner 2020-03-27 10:13:11 +01:00
parent c4ccdf4b30
commit 047b0d8ab5
1 changed files with 1 additions and 1 deletions
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2
nsswitch/pam_winbind.c
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@ -2609,7 +2609,6 @@ static int _pam_delete_cred(pam_handle_t *pamh, int flags,
wbc_status = wbcCtxLogoffUserEx(ctx->wbc_ctx, &logoff, &error);
retval = wbc_auth_error_to_pam_error(ctx, error, wbc_status,
user, "wbcLogoffUser");
wbcFreeMemory(error);
wbcFreeMemory(logoff.blobs);
logoff.blobs = NULL;
@ -2629,6 +2628,7 @@ out:
retval = wbc_auth_error_to_pam_error(ctx, error, wbc_status,
user, "wbcLogoffUser");
}
wbcFreeMemory(error);
/*
* Delete the krb5 ccname variable from the PAM environment