SB2022092043 - Denial of service in Linux kernel printer IOCTL
Published: September 20, 2022
Security Bulletin ID
SB2022092043
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2020-27784)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error when accessing a deallocated instance in printer_ioctl(). A local user can trigger a use-after-free error and crash the kernel.
Remediation
Install update from vendor's website.