Multiple vulnerabilities in Linux kernel

Published: 2019-12-03 | Updated: 2020-07-17

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2019-19523 CVE-2019-19528
CWE-ID	CWE-416
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Linux kernel Operating systems & Components / Operating system
Vendor	Linux Foundation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU30562

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/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-2019-19523

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to use-after-free error in the drivers/usb/misc/adutux.c driver, aka CID-44efc269db79. A local user can use a malicious USB device to trigger use-after-free error and execute arbitrary code on the system with elevated privileges.

Mitigation

Update to version 5.3.7.

Vulnerable software versions

Linux kernel: 5.3.1 - 5.3.6

CPE2.3

External links

https://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
https://www.openwall.com/lists/oss-security/2019/12/03/4
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.7
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=44efc269db7929f6275a1fa927ef082e533ecde0
https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

2) Use-after-free

EUVDB-ID: #VU30564