Upgrade urgency: SECURITY, Contains fixes to security issues that affect authenticated client connections. MODERATE otherwise.

Fix integer overflow in STRALGO LCS (CVE-2021-32625) An integer overflow bug in Redis version 6.0 or newer can be exploited using the STRALGO LCS command to corrupt the heap and potentially result with remote code execution. This is a result of an incomplete fix by CVE-2021-29477.

Other bug fixes:

• Fix crash in UNLINK on a stream key with deleted consumer groups (#8932)
• SINTERSTORE: Add missing keyspace del event when none of the sources exist (#8949)