Use-after-free in Linux kernel - CVE-2019-19523
Published: December 3, 2019 / Updated: July 17, 2020
Vulnerability identifier: #VU30562
CSH Severity: High
CVSS v4.0: 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
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability 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.
How to mitigate CVE-2019-19523
Update to version 5.3.7.
Sources
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
- http://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