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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <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-42455] ReplicaSetChangeNotifier::onConfirmedSet is unsafe during shutdown</title>
                <link>https://jira.mongodb.org/browse/SERVER-42455</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The replica set change notifier makes a copy of _listeners under a lock, but then invokes onConfirmedSet on those listeners outside the lock.  During shutdown, those pointers can be dead, which can cause us to use after free and crash.&lt;/p&gt;

&lt;p&gt;See &lt;a href=&quot;https://github.com/mongodb/mongo/blob/cabb59afb1d6ea0ba68caedd8842776e002839e8/src/mongo/client/replica_set_change_notifier.cpp#L116-L120&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;replica_set_change_notifier.cpp#L116-L120&lt;/a&gt;&lt;/p&gt;

&lt;p/&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    auto listeners = _listeners;&lt;/span&gt;&lt;/pre&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    lk.unlock();&lt;/span&gt;&lt;/pre&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&amp;nbsp;&lt;/pre&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    &lt;/span&gt;&lt;span style=&quot;color: #006699; font-weight: bold; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;for&lt;/span&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; (auto listener : listeners) {&lt;/span&gt;&lt;/pre&gt;
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					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;        listener-&amp;gt;onConfirmedSet(state);&lt;/span&gt;&lt;/pre&gt;
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&lt;p/&gt;</description>
                <environment></environment>
        <key id="876979">SERVER-42455</key>
            <summary>ReplicaSetChangeNotifier::onConfirmedSet is unsafe during shutdown</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="janna.golden@mongodb.com">Janna Golden</assignee>
                                    <reporter username="mira.carey@mongodb.com">Mira Carey</reporter>
                        <labels>
                            <label>servicearch-wfbf-day</label>
                    </labels>
                <created>Fri, 26 Jul 2019 18:59:30 +0000</created>
                <updated>Sun, 29 Oct 2023 22:18:41 +0000</updated>
                            <resolved>Tue, 7 Apr 2020 21:48:31 +0000</resolved>
                                                    <fixVersion>4.2.6</fixVersion>
                    <fixVersion>4.4.0-rc0</fixVersion>
                    <fixVersion>4.7.0</fixVersion>
                                    <component>Internal Code</component>
                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                                                                <comments>
                            <comment id="3032002" author="xgen-internal-githook" created="Wed, 8 Apr 2020 21:05:49 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;jannaerin&apos;, &apos;email&apos;: &apos;golden.janna@gmail.com&apos;, &apos;username&apos;: &apos;jannaerin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-42455&quot; title=&quot;ReplicaSetChangeNotifier::onConfirmedSet is unsafe during shutdown&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-42455&quot;&gt;&lt;del&gt;SERVER-42455&lt;/del&gt;&lt;/a&gt; Make ReplicaSetChangeNotifier::onConfirmedSet safe during shutdown&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 242d86b0e9a4091466682bbb97d2298839a91569)&lt;br/&gt;
Branch: v4.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/63fa6cb7da951716847b7d17eef9cc777c2fe0a5&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/63fa6cb7da951716847b7d17eef9cc777c2fe0a5&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3030993" author="xgen-internal-githook" created="Wed, 8 Apr 2020 14:25:48 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;jannaerin&apos;, &apos;email&apos;: &apos;golden.janna@gmail.com&apos;, &apos;username&apos;: &apos;jannaerin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-42455&quot; title=&quot;ReplicaSetChangeNotifier::onConfirmedSet is unsafe during shutdown&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-42455&quot;&gt;&lt;del&gt;SERVER-42455&lt;/del&gt;&lt;/a&gt; Make ReplicaSetChangeNotifier::onConfirmedSet safe during shutdown&lt;/p&gt;

&lt;p&gt;(cherry picked from commit 242d86b0e9a4091466682bbb97d2298839a91569)&lt;br/&gt;
Branch: v4.4&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/107e1da10960111b519c561efe2094ae584106e0&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/107e1da10960111b519c561efe2094ae584106e0&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3030376" author="xgen-internal-githook" created="Tue, 7 Apr 2020 21:36:53 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;jannaerin&apos;, &apos;email&apos;: &apos;golden.janna@gmail.com&apos;, &apos;username&apos;: &apos;jannaerin&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-42455&quot; title=&quot;ReplicaSetChangeNotifier::onConfirmedSet is unsafe during shutdown&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-42455&quot;&gt;&lt;del&gt;SERVER-42455&lt;/del&gt;&lt;/a&gt; Make ReplicaSetChangeNotifier::onConfirmedSet safe during shutdown&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/242d86b0e9a4091466682bbb97d2298839a91569&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/242d86b0e9a4091466682bbb97d2298839a91569&lt;/a&gt;&lt;/p&gt;</comment>
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