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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-46942] State information can be leaked if server closes too quickly on network_interface_tl</title>
                <link>https://jira.mongodb.org/browse/SERVER-46942</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The network_interface_tl binds its command states into async lambdas for connection establishment, timeout, and command response resolution. However, the timer lambda &lt;a href=&quot;https://github.com/mongodb/mongo/blob/175d4ff4d482510b97cd4df59c30f6ab0a57867e/src/mongo/executor/network_interface_tl.cpp#L357-L380&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt; can cause a leak if the command state is canceled. Since the timer is a member of the command state itself, we need to cancel the timer to break the lifetime dependency cycle. We do it &lt;a href=&quot;https://github.com/mongodb/mongo/blob/2261279b51ea13df08ae708ff278f0679c59dc32/src/mongo/executor/network_interface_tl.cpp#L463-L465&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;, too late in program flow to observe cancelation. We should cancel the timer earlier in the command response resolution. This issue exists for v4.0 and v4.2. It is fixed for v4.4 by a reorganization (see &lt;a href=&quot;https://github.com/mongodb/mongo/blob/aa12f2e70081cfbdadc96af97c7e898dad5e4b15/src/mongo/executor/network_interface_tl.cpp#L345-L348&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;here&lt;/a&gt;).&lt;/p&gt;</description>
                <environment></environment>
        <key id="1279874">SERVER-46942</key>
            <summary>State information can be leaked if server closes too quickly on network_interface_tl</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="amirsaman.memaripour@mongodb.com">Amirsaman Memaripour</assignee>
                                    <reporter username="marcos.grillo@mongodb.com">Marcos Jos&#233; Grillo Ramirez</reporter>
                        <labels>
                    </labels>
                <created>Wed, 18 Mar 2020 15:13:37 +0000</created>
                <updated>Sun, 29 Oct 2023 22:10:39 +0000</updated>
                            <resolved>Tue, 7 Apr 2020 16:45:23 +0000</resolved>
                                    <version>4.2.4</version>
                    <version>4.0.17</version>
                                    <fixVersion>4.2.6</fixVersion>
                    <fixVersion>4.0.19</fixVersion>
                                    <component>Sharding</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="3053288" author="xgen-internal-githook" created="Thu, 23 Apr 2020 19:16:08 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Amirsaman Memaripour&apos;, &apos;email&apos;: &apos;amirsaman.memaripour@mongodb.com&apos;, &apos;username&apos;: &apos;samanca&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-46942&quot; title=&quot;State information can be leaked if server closes too quickly on network_interface_tl&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-46942&quot;&gt;&lt;del&gt;SERVER-46942&lt;/del&gt;&lt;/a&gt; Cancel timer before leaving onAcquireConn&lt;/p&gt;

&lt;p&gt;Avoid leaking state information if server closes too quickly on network_interface_tl.&lt;/p&gt;

&lt;p&gt;(cherry picked from commit b43425cf31637d9f2dfd35eb7b09d372631e09fb)&lt;br/&gt;
Branch: v4.0&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/6f247fbcd154b1026ffaf5223584030b529a0e51&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/6f247fbcd154b1026ffaf5223584030b529a0e51&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="3029664" author="xgen-internal-githook" created="Tue, 7 Apr 2020 16:42:17 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Amirsaman Memaripour&apos;, &apos;email&apos;: &apos;amirsaman.memaripour@mongodb.com&apos;, &apos;username&apos;: &apos;samanca&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-46942&quot; title=&quot;State information can be leaked if server closes too quickly on network_interface_tl&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-46942&quot;&gt;&lt;del&gt;SERVER-46942&lt;/del&gt;&lt;/a&gt; Cancel timer before leaving onAcquireConn&lt;/p&gt;

&lt;p&gt;Avoid leaking state information if server closes too quickly on network_interface_tl.&lt;br/&gt;
Branch: v4.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/b43425cf31637d9f2dfd35eb7b09d372631e09fb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/b43425cf31637d9f2dfd35eb7b09d372631e09fb&lt;/a&gt;&lt;/p&gt;</comment>
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