#VU28399 Buffer overflow in Linux kernel - CVE-2019-3846

Vulnerability identifier: #VU28399

Vulnerability risk: High

CVSSv4.0: 6.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-3846

CWE-ID: CWE-119

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

A flaw that allowed an attacker to corrupt memory and possibly escalate privileges was found in the mwifiex kernel module while connecting to a malicious wireless network.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 4.4 - 4.4.185, 4.9 - 4.9.185, 4.14 - 4.19.58, 5.0 - 5.0.21, 5.1 rc1 - 5.1.21

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External links
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.59
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.18
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.134
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.186
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.186

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.