Vulnerability identifier: #VU30565

Vulnerability risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-19529

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

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

Vendor: Linux Foundation

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/net/can/usb/mcba_usb.c driver, aka CID-4d6636498c41. 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 5.3.11.

Vulnerable software versions

Linux kernel: 5.3.1 - 5.3.10

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External links
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html
http://www.openwall.com/lists/oss-security/2019/12/03/4
http://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.11
http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4d6636498c41891d0482a914dd570343a838ad79
http://usn.ubuntu.com/4225-1/
http://usn.ubuntu.com/4225-2/
http://usn.ubuntu.com/4226-1/
http://usn.ubuntu.com/4227-1/
http://usn.ubuntu.com/4227-2/

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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 Internet.

Is there known malware, which exploits this vulnerability?

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