SB2019082030 - Use-after-free in Linux kernel
Published: August 20, 2019 Updated: September 5, 2019
Security Bulletin ID
SB2019082030
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-2019-15213)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to use-after-free error in the drivers/media/usb/dvb-usb/dvb-usb-init.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-5.2.3
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6cf97230cd5f36b7665099083272595c55d72be7
- https://syzkaller.appspot.com/bug?id=a53c9c9dd2981bfdbfbcbc1ddbd35595eda8bced