# CVE-2021-3588: bluetooth: The cli_feat_read_cb() function in src/gatt-database.c does not perform bounds checks on the 'offset' variable before...

CVE-2021-3588 is fixed in 7 products on 1 platform, first by bluetooth 5.53-0ubuntu3.2, released June 9, 2021. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-3588
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0045
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 9, 2021

## Description

The cli_feat_read_cb() function in src/gatt-database.c does not perform bounds checks on the 'offset' variable before using it as an index into an array for reading.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bluetooth Ubuntu 20.04 LTS (focal) | 5.53-0ubuntu3.2 | [bluetooth 5.53-0ubuntu3.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bluetooth-5.53-0ubuntu3.2.md) | Jun 9, 2021 |
| Linux | bluez Ubuntu 20.04 LTS (focal) | 5.53-0ubuntu3.2 | [bluez 5.53-0ubuntu3.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bluez-5.53-0ubuntu3.2.md) | Jun 9, 2021 |
| Linux | bluez-cups Ubuntu 20.04 LTS (focal) | 5.53-0ubuntu3.2 | [bluez-cups 5.53-0ubuntu3.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bluez-cups-5.53-0ubuntu3.2.md) | Jun 9, 2021 |
| Linux | bluez-hcidump Ubuntu 20.04 LTS (focal) | 5.53-0ubuntu3.2 | [bluez-hcidump 5.53-0ubuntu3.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bluez-hcidump-5.53-0ubuntu3.2.md) | Jun 9, 2021 |
| Linux | bluez-obexd Ubuntu 20.04 LTS (focal) | 5.53-0ubuntu3.2 | [bluez-obexd 5.53-0ubuntu3.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bluez-obexd-5.53-0ubuntu3.2.md) | Jun 9, 2021 |
| Linux | bluez-tests Ubuntu 20.04 LTS (focal) | 5.53-0ubuntu3.2 | [bluez-tests 5.53-0ubuntu3.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-bluez-tests-5.53-0ubuntu3.2.md) | Jun 9, 2021 |
| Linux | libbluetooth3 Ubuntu 20.04 LTS (focal) | 5.53-0ubuntu3.2 | [libbluetooth3 5.53-0ubuntu3.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libbluetooth3-5.53-0ubuntu3.2.md) | Jun 9, 2021 |

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Data as of 2026-11-08T13:06:02Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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