#VU30563 Use-after-free in Linux kernel - CVE-2019-19525
Published: December 3, 2019 / Updated: July 17, 2020
Vulnerability identifier: #VU30563
Vulnerability risk: High
CVSSv4.0: 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-2019-19525
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
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/ieee802154/atusb.c driver, aka CID-7fd25e6fc035. 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.
Remediation
Update to version 5.3.6.
External links
- http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html
- http://www.openwall.com/lists/oss-security/2019/12/03/4
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.6
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7fd25e6fc035f4b04b75bca6d7e8daa069603a76
- https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html