CVE-2019-9500

Publication date 12 April 2019

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

8.3 · High

Score breakdown

Description

The Broadcom brcmfmac WiFi driver prior to commit 1b5e2423164b3670e8bc9174e4762d297990deff is vulnerable to a heap buffer overflow. If the Wake-up on Wireless LAN functionality is configured, a malicious event frame can be constructed to trigger an heap buffer overflow in the brcmf_wowl_nd_results function. This vulnerability can be exploited with compromised chipsets to compromise the host, or when used in combination with CVE-2019-9503, can be used remotely. In the worst case scenario, by sending specially-crafted WiFi packets, a remote, unauthenticated attacker may be able to execute arbitrary code on a vulnerable system. More typically, this vulnerability will result in denial-of-service conditions.

From the Ubuntu Security Team

Hugues Anguelkov discovered that the Broadcom Wifi driver in the Linux kernel contained a heap buffer overflow. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

Status

Package Ubuntu Release Status
linux 19.04 disco
Fixed 5.0.0-15.16
18.10 cosmic
Fixed 4.18.0-20.21
18.04 LTS bionic
Fixed 4.15.0-50.54
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected
linux-goldfish 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-aws 19.04 disco
Fixed 5.0.0-1006.6
18.10 cosmic
Fixed 4.18.0-1016.18
18.04 LTS bionic
Fixed 4.15.0-1039.41
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected
linux-flo 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-aws-hwe 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial
Fixed 4.15.0-1039.41~16.04.1
14.04 LTS trusty Not in release
linux-azure 19.04 disco
Fixed 5.0.0-1006.6
18.10 cosmic
Fixed 4.18.0-1018.18
18.04 LTS bionic
Fixed 4.18.0-1018.18~18.04.1
16.04 LTS xenial
Fixed 4.15.0-1045.49
14.04 LTS trusty
Fixed 4.15.0-1045.49~14.04.1
linux-azure-edge 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic
Fixed 4.18.0-1018.18~18.04.1
16.04 LTS xenial
Fixed 4.15.0-1045.49
14.04 LTS trusty Not in release
linux-euclid 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-gcp 19.04 disco
Fixed 5.0.0-1006.6
18.10 cosmic
Fixed 4.18.0-1011.12
18.04 LTS bionic
Fixed 4.15.0-1032.34
16.04 LTS xenial
Fixed 4.15.0-1032.34~16.04.1
14.04 LTS trusty Not in release
linux-gcp-edge 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic
Fixed 4.18.0-1011.12~18.04.1
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-gke 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Ignored end of standard support
14.04 LTS trusty Not in release
linux-gke-4.15 19.04 disco Not in release
18.04 LTS bionic
Fixed 4.15.0-1032.34
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-gke-5.0 19.04 disco Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-grouper 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-hwe 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic
Fixed 4.18.0-20.21~18.04.1
16.04 LTS xenial
Fixed 4.15.0-50.54~16.04.1
14.04 LTS trusty Not in release
linux-hwe-edge 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial
Fixed 4.15.0-50.54~16.04.1
14.04 LTS trusty Not in release
linux-kvm 19.04 disco
Fixed 5.0.0-1006.6
18.10 cosmic
Fixed 4.18.0-1012.12
18.04 LTS bionic
Fixed 4.15.0-1034.34
16.04 LTS xenial
Not affected
14.04 LTS trusty Not in release
linux-lts-trusty 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-lts-utopic 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-lts-vivid 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-lts-wily 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-lts-xenial 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty
Not affected
linux-maguro 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-mako 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-manta 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-oem 19.04 disco
Fixed 4.15.0-1038.43
18.10 cosmic
Fixed 4.15.0-1038.43
18.04 LTS bionic
Fixed 4.15.0-1038.43
16.04 LTS xenial Ignored end of standard support, was needs-triage
14.04 LTS trusty Not in release
linux-oracle 19.04 disco
Fixed 4.15.0-1013.15
18.10 cosmic
Fixed 4.15.0-1013.15
18.04 LTS bionic
Fixed 4.15.0-1013.15
16.04 LTS xenial
Fixed 4.15.0-1013.15~16.04.1
14.04 LTS trusty Not in release
linux-raspi2 19.04 disco
Fixed 5.0.0-1008.8
18.10 cosmic
Fixed 4.18.0-1014.16
18.04 LTS bionic
Fixed 4.15.0-1036.38
16.04 LTS xenial
Not affected
14.04 LTS trusty Not in release
linux-snapdragon 19.04 disco
Fixed 5.0.0-1012.12
18.10 cosmic Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty Not in release

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
linux

Severity score breakdown

Parameter Value
Base score 8.3 · High
Attack vector Adjacent
Attack complexity High
Privileges required None
User interaction None
Scope Changed
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-3980-1
    • Linux kernel vulnerabilities
    • 14 May 2019
    • USN-3981-1
    • Linux kernel vulnerabilities
    • 14 May 2019
    • USN-3981-2
    • Linux kernel (HWE) vulnerabilities
    • 15 May 2019
    • USN-3980-2
    • Linux kernel (HWE) vulnerabilities
    • 14 May 2019
    • USN-3979-1
    • Linux kernel vulnerabilities
    • 14 May 2019

Other references