SB2019082029 - Use-after-free in Linux kernel
Published: August 20, 2019 Updated: September 5, 2019
Security Bulletin ID
SB2019082029
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Physical access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2019-15220)
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.
Remediation
Install update from vendor's website.
References
- 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/