# CVE-2021-47620: linux: In the Linux kernel, the following vulnerability has been resolved:  Bluetooth: refactor malicious adv data check  Ch...

CVE-2021-47620 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47620, released June 20, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-47620
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0032
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 20, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  Bluetooth: refactor malicious adv data check  Check for out-of-bound read was being performed at the end of while num_reports loop, and would fill journal with false positives. Added check to beginning of loop processing so that it doesn't get checked after ptr has been advanced.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.16.7-1 | [DEBIAN-CVE-2021-47620](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47620.md) | Jun 20, 2024 |
| Linux | linux Debian 13.5 (trixie) | 5.16.7-1 | [DEBIAN-CVE-2021-47620](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47620.md) | Jun 20, 2024 |
| Linux | linux Debian 14 | 5.16.7-1 | [DEBIAN-CVE-2021-47620](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47620.md) | Jun 20, 2024 |

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Data as of 2026-11-09T01:18:40Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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