# CVE-2018-5383: linux-firmware: Bluetooth firmware or operating system software drivers in macOS versions before 10.13, High Sierra and iOS versions...

CVE-2018-5383 is fixed in 3 products on 1 platform, first by linux-firmware 1.173.18, released August 6, 2018. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2018-5383
- Priority: High
- CVSS: n/a (High)
- EPSS: 0.0081
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 6, 2018

## Description

Bluetooth firmware or operating system software drivers in macOS versions before 10.13, High Sierra and iOS versions before 11.4, and Android versions before the 2018-06-05 patch may not sufficiently validate elliptic curve parameters used to generate public keys during a Diffie-Hellman key exchange, which may allow a remote attacker to obtain the encryption key used by the device.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux-firmware Ubuntu 18.04.6 LTS (bionic) | 1.173.18 | [linux-firmware 1.173.18](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-linux-firmware-1.173.18.md) | Aug 6, 2018 |
| Linux | nic-firmware Ubuntu 18.04.6 LTS (bionic) | 1.173.18 | [nic-firmware 1.173.18](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-nic-firmware-1.173.18.md) | Aug 6, 2018 |
| Linux | scsi-firmware Ubuntu 18.04.6 LTS (bionic) | 1.173.18 | [scsi-firmware 1.173.18](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-scsi-firmware-1.173.18.md) | Aug 6, 2018 |

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Data as of 2026-11-07T18:46:35Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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