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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-35929] Possible use-after-free when reloading the view catalog due to an invalidation</title>
                <link>https://jira.mongodb.org/browse/SERVER-35929</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo/blob/r4.0.0/src/mongo/db/views/view_catalog.cpp#L439&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;The &lt;tt&gt;resolvedNss = &amp;amp;(view-&amp;gt;viewOn())&lt;/tt&gt; address&lt;/a&gt; refers to memory within &lt;tt&gt;ViewCatalog::_viewMap&lt;/tt&gt; and would have therefore been freed when a subsequent iteration of &lt;tt&gt;ViewCatalog::_lookup_inlock()&lt;/tt&gt; &lt;a href=&quot;https://github.com/mongodb/mongo/blob/r4.0.0/src/mongo/db/views/view_catalog.cpp#L395&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;leads to &lt;tt&gt;ViewCatalog::_reloadIfNeeded_inlock()&lt;/tt&gt; being called&lt;/a&gt;. This could happen if &lt;tt&gt;ViewCatalog::invalidate()&lt;/tt&gt; is called concurrently while following a chain of view definitions in &lt;tt&gt;ViewCatalog::resolveView()&lt;/tt&gt;.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;Note&lt;/b&gt;: This issue &lt;b&gt;cannot&lt;/b&gt; be triggered against MongoDB 3.4 or 3.6 because the parallel-batch writer lock prevents resolving a view definition from overlapping with oplog application.&lt;/p&gt;</description>
                <environment></environment>
        <key id="566126">SERVER-35929</key>
            <summary>Possible use-after-free when reloading the view catalog due to an invalidation</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="kyle.suarez@mongodb.com">Kyle Suarez</assignee>
                                    <reporter username="max.hirschhorn@mongodb.com">Max Hirschhorn</reporter>
                        <labels>
                            <label>read-only-views</label>
                    </labels>
                <created>Sun, 1 Jul 2018 22:07:21 +0000</created>
                <updated>Sun, 29 Oct 2023 22:30:12 +0000</updated>
                            <resolved>Tue, 10 Jul 2018 09:31:56 +0000</resolved>
                                    <version>4.0.0</version>
                                    <fixVersion>4.0.1</fixVersion>
                    <fixVersion>4.1.1</fixVersion>
                                    <component>Querying</component>
                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="1942831" author="xgen-internal-githook" created="Tue, 10 Jul 2018 10:47:31 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;ksuarz&apos;, &apos;name&apos;: &apos;Kyle Suarez&apos;, &apos;email&apos;: &apos;kyle.suarez@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-35929&quot; title=&quot;Possible use-after-free when reloading the view catalog due to an invalidation&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-35929&quot;&gt;&lt;del&gt;SERVER-35929&lt;/del&gt;&lt;/a&gt; restart view resolution if catalog is invalidated&lt;/p&gt;

&lt;p&gt;(cherry picked from commit e86d684515abe1c4dbf79dbb71741b5db0317039)&lt;br/&gt;
Branch: v4.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/8d5d6cf7a21c228f22c472c2779fc650c520fcfa&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/8d5d6cf7a21c228f22c472c2779fc650c520fcfa&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1942788" author="xgen-internal-githook" created="Tue, 10 Jul 2018 09:30:38 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;ksuarz&apos;, &apos;name&apos;: &apos;Kyle Suarez&apos;, &apos;email&apos;: &apos;kyle.suarez@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-35929&quot; title=&quot;Possible use-after-free when reloading the view catalog due to an invalidation&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-35929&quot;&gt;&lt;del&gt;SERVER-35929&lt;/del&gt;&lt;/a&gt; restart view resolution if catalog is invalidated&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/e86d684515abe1c4dbf79dbb71741b5db0317039&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/e86d684515abe1c4dbf79dbb71741b5db0317039&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1941913" author="acm" created="Mon, 9 Jul 2018 15:03:13 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=max.hirschhorn&quot; class=&quot;user-hover&quot; rel=&quot;max.hirschhorn&quot;&gt;max.hirschhorn&lt;/a&gt; - Any thoughts on why this didn&apos;t trip the AddressSanitizer builds?&lt;/p&gt;</comment>
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