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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>[CDRIVER-787] segfault on network err in legacy update or delete</title>
                <link>https://jira.mongodb.org/browse/CDRIVER-787</link>
                <project id="10030" key="CDRIVER">C Driver</project>
                    <description>&lt;p&gt;This code calls bson_destroy (gle) on the result of a getlasterror call, &lt;b&gt;when the getlasterror call has failed&lt;/b&gt; and the &quot;gle&quot; bson object is NULL:&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo-c-driver/blob/a0219c9777f90187fa73d3fa24c66030e0db2a04/src/mongoc/mongoc-write-command.c#L730&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-c-driver/blob/a0219c9777f90187fa73d3fa24c66030e0db2a04/src/mongoc/mongoc-write-command.c#L730&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;The result is a segfault.&lt;/p&gt;</description>
                <environment></environment>
        <key id="224802">CDRIVER-787</key>
            <summary>segfault on network err in legacy update or delete</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="9">Done</resolution>
                                        <assignee username="jesse@mongodb.com">A. Jesse Jiryu Davis</assignee>
                                    <reporter username="jesse@mongodb.com">A. Jesse Jiryu Davis</reporter>
                        <labels>
                    </labels>
                <created>Mon, 10 Aug 2015 00:30:48 +0000</created>
                <updated>Wed, 19 Oct 2016 14:15:11 +0000</updated>
                            <resolved>Tue, 25 Aug 2015 21:12:10 +0000</resolved>
                                                    <fixVersion>1.2-beta1</fixVersion>
                                    <component>libmongoc</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="1014383" author="xgen-internal-githook" created="Tue, 25 Aug 2015 21:10:42 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;ajdavis&apos;, u&apos;name&apos;: u&apos;A. Jesse Jiryu Davis&apos;, u&apos;email&apos;: u&apos;jesse@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/CDRIVER-787&quot; title=&quot;segfault on network err in legacy update or delete&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CDRIVER-787&quot;&gt;&lt;del&gt;CDRIVER-787&lt;/del&gt;&lt;/a&gt; crash in legacy writes after network err&lt;/p&gt;

&lt;p&gt;If _mongoc_client_recv_gle returned an error, the getlasterror object&lt;br/&gt;
was sometimes NULL, sometimes not. If NULL, the calls to bson_destroy&lt;br/&gt;
in update_legacy and delete_legacy crashed. If not NULL, then&lt;br/&gt;
insert_legacy leaked it, since there was no bson_destroy call there.&lt;/p&gt;

&lt;p&gt;Ensure that gle is NULL iff _mongoc_client_recv_gle returns false.&lt;br/&gt;
Branch: 1.2.0-dev&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-c-driver/commit/70d6c651f5bcff0b27091b4dc4770f7a642827d8&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-c-driver/commit/70d6c651f5bcff0b27091b4dc4770f7a642827d8&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1014382" author="xgen-internal-githook" created="Tue, 25 Aug 2015 21:10:41 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;ajdavis&apos;, u&apos;name&apos;: u&apos;A. Jesse Jiryu Davis&apos;, u&apos;email&apos;: u&apos;jesse@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/CDRIVER-787&quot; title=&quot;segfault on network err in legacy update or delete&quot; class=&quot;issue-link&quot; data-issue-key=&quot;CDRIVER-787&quot;&gt;&lt;del&gt;CDRIVER-787&lt;/del&gt;&lt;/a&gt; test OP_UPDATE and DELETE err handling&lt;/p&gt;

&lt;p&gt;Reveals segfault if server hangs up while client waits to receive getlasterror&lt;br/&gt;
response.&lt;br/&gt;
Branch: 1.2.0-dev&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo-c-driver/commit/6e790dd5c40dae832018b22ed4f1fc9d308e1a93&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-c-driver/commit/6e790dd5c40dae832018b22ed4f1fc9d308e1a93&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="1000225" author="jesse" created="Mon, 10 Aug 2015 00:32:09 +0000"  >&lt;p&gt;Same for deletes:&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://github.com/mongodb/mongo-c-driver/blob/a0219c9777f90187fa73d3fa24c66030e0db2a04/src/mongoc/mongoc-write-command.c#L330&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo-c-driver/blob/a0219c9777f90187fa73d3fa24c66030e0db2a04/src/mongoc/mongoc-write-command.c#L330&lt;/a&gt;&lt;/p&gt;</comment>
                    </comments>
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            <issuekey id="224815">CDRIVER-788</issuekey>
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