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    <title>MongoDB Jira</title>
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    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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<item>
            <title>[SERVER-31664] ExpressionDate*::evaluate() methods may access the ServiceContext via pointer to freed OperationContext</title>
                <link>https://jira.mongodb.org/browse/SERVER-31664</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Aggregation expressions that need to access the TimeZoneDatabase will use an OperationContext* stored as part of the ExpressionContext to access the ServiceContext.&lt;/p&gt;

&lt;p&gt;In the following case, the original OperationContext will have been freed prior to use:&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;The time-zone dependent expression lives within a collection validator, as part of a $expr expression&lt;/li&gt;
&lt;/ol&gt;
</description>
                <environment></environment>
        <key id="448740">SERVER-31664</key>
            <summary>ExpressionDate*::evaluate() methods may access the ServiceContext via pointer to freed OperationContext</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="13201">Fixed</resolution>
                                        <assignee username="james.wahlin@mongodb.com">James Wahlin</assignee>
                                    <reporter username="james.wahlin@mongodb.com">James Wahlin</reporter>
                        <labels>
                    </labels>
                <created>Fri, 20 Oct 2017 18:46:06 +0000</created>
                <updated>Mon, 30 Oct 2023 23:12:36 +0000</updated>
                            <resolved>Mon, 30 Oct 2017 12:35:18 +0000</resolved>
                                                    <fixVersion>3.6.0-rc2</fixVersion>
                                    <component>Aggregation Framework</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1712333" author="xgen-internal-githook" created="Mon, 30 Oct 2017 12:31:08 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;james@mongodb.com&apos;, &apos;name&apos;: &apos;James Wahlin&apos;, &apos;username&apos;: &apos;jameswahlin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-31664&quot; title=&quot;ExpressionDate*::evaluate() methods may access the ServiceContext via pointer to freed OperationContext&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-31664&quot;&gt;&lt;del&gt;SERVER-31664&lt;/del&gt;&lt;/a&gt; Fix use after free of OperationContext by ExpressionDate*&lt;/p&gt;

&lt;p&gt;Addresses the case where a time zone expression lives within a collection&lt;br/&gt;
validator as part of a $expr expression. In this case, the Expression&lt;br/&gt;
will outlive the OperationContext it was created under.&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/9becaec05921e0fd6eeb3e7bdf8c91ca1f6531c7&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/9becaec05921e0fd6eeb3e7bdf8c91ca1f6531c7&lt;/a&gt;&lt;/p&gt;</comment>
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