Use-after-free in Linux kernel - CVE-2019-15220
Published: September 5, 2019
Vulnerability identifier: #VU20893
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:P/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-15220
CWE-ID: CWE-416
Exploitation vector: Local 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/net/wireless/intersil/p54/p54usb.c driver. 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-2019-15220
Install update from vendor's website.
Sources
- http://www.openwall.com/lists/oss-security/2019/08/20/2
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.1
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6e41e2257f1094acc37618bf6c856115374c6922
- https://syzkaller.appspot.com/bug?id=082c09653e43e33a6a56f8c57cf051eeacae9d5f
- https://usn.ubuntu.com/4115-1/
- https://usn.ubuntu.com/4118-1/