SB2020112332 - Null pointer dereference in Linux kernel
Published: November 23, 2020
Security Bulletin ID
SB2020112332
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) Null pointer dereference (CVE-ID: CVE-2020-15437)
The vulnerability allows a local privileged user to perform a denial of service (DoS) attack.
The Linux kernel before version 5.8 is vulnerable to a NULL pointer dereference in drivers/tty/serial/8250/8250_core.c:serial8250_isa_init_ports() that allows local users to cause a denial of service by using the p->serial_in pointer which uninitialized.
Remediation
Install update from vendor's website.