FreeBSD: VID-5523394e-b889-11f0-9446-f02f7497ecda (CVE-2025-62507): redis -- Bug in XACKDEL may lead to stack overflow and potential RCE

Google Big Sleep reports: A user can run the XACKDEL command with multiple ID's and trigger a stack buffer overflow, which may potentially lead to remote code execution. The problem exists in Redis 8.2 or newer. The code doesn't handle the case where the number of ID's exceeds the STREAMID_STATIC_VECTOR_LEN, and skips a reallocation, which leads to a stack buffer overflow. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from executing XACKDEL operation. This can be done using ACL to restrict XACKDEL command.