Bug #88051 A Double-Free Issue

• Submitted: 11 Oct 2017 8:16
• Modified: 16 Nov 2017 13:24
• Reporter: Tom Shi
• Status: Closed
• Category: MySQL Server: Replication
• Severity: S3 (Non-critical)
• Version: 5.7
• OS: Any
• CPU Architecture: Any

[11 Oct 2017 8:16] Tom Shi

Description:
The double free is at https://github.com/mysql/mysql-server/blob/5.7/sql/rpl_utility.cc#L1089

The code is as below:

if (entry)
    my_free(entry);
if (preamble)
    my_free(entry); // here, it should be "my_free(preamble)"
if (pos)
    my_free(pos);

How to repeat:
An obvious double-free.

[11 Oct 2017 8:32] MySQL Verification Team

Hello Tom Shi,

Thank you for the report and feedback.

Thanks,
Umesh

[16 Nov 2017 13:24] Margaret Fisher

Posted by developer:
 
No changelog entry needed - closing.