Issue Information
| Issue Number | 701053a |
| Issue | A UAF (Use After Free) occurs when accessing a memory area that has been freed during the cleanup process of buffer cache removed bh. Depending on timing, an Internal Error may occur. |
| Cause | After cleaning the SO for removed bh, the buffer handle SO should be cleaned, but the order of SO cleanup can sometimes be reversed. |
| Resolution | Modified to clean the SO for removed bh first, then clean the buffer handle SO. |
| Occurrence Date | June 22, 2026 |
| Versions Requiring Patch | 6FS07PS 7FS02PS |
Patch Information
| Patch Name | FS02PS_701053a |
| Major Version | 7 |
| Minor Version | FS02PS |
| Version Title | Fix for UAF Issue Occurring During buffer cache removed bh Cleanup Process |
| Release Date | July 27, 2026 |
| Compatibility | • TAC rolling patch: Supported • TSC rolling patch: Supported • Backup data compatibility: Supported • Protocol compatibility: Supported • Data format compatibility: Supported |
| AP Impact | • Plan change required: No • Result value change: No • SQL syntax change: No • System object change: No • Existing feature change: No |
| Parameters | - |
| Workaround | - |