Upgrade urgency: SECURITY, contains fixes to security issues that affect authenticated client connections on 32-bit versions. MODERATE otherwise.

Fix integer overflow in BITFIELD on 32-bit versions (CVE-2021-32761). An integer overflow bug in Redis version 2.2 or newer can be exploited using the BITFIELD command to corrupt the heap and potentially result with remote code execution.

Bug fixes:

• Fix overflows on 32-bit versions in GETBIT, SETBIT, BITCOUNT, BITPOS, and BITFIELD (#9191)
• Fix ziplist length updates on big-endian platforms (#2080)