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.
Mend Note: After conducting further research, Mend has determined that versions v3.9-rc5 through v4.4.231, v4.5-rc1 through v4.9.231, v4.10-rc1 through v4.14.189, v4.15-rc1 through v4.19.134, v5.0-rc1 through v5.4.53, v5.5-rc1 through v5.7.10 and v5.8-rc1 through v5.8-rc6 of Linux Kernel are vulnerable to CVE-2020-15437.
CVE-2020-15437 - Medium Severity Vulnerability
The Linux Kernel
Library home page: https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/?wsslib=linux
Found in HEAD commit: 05c0743befb9102e2ecb9fbd0fa8eb43eb8bb5ec
Found in base branch: master
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. Mend Note: After conducting further research, Mend has determined that versions v3.9-rc5 through v4.4.231, v4.5-rc1 through v4.9.231, v4.10-rc1 through v4.14.189, v4.15-rc1 through v4.19.134, v5.0-rc1 through v5.4.53, v5.5-rc1 through v5.7.10 and v5.8-rc1 through v5.8-rc6 of Linux Kernel are vulnerable to CVE-2020-15437.
Publish Date: 2020-11-23
URL: CVE-2020-15437
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Local - Attack Complexity: Low - Privileges Required: High - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: None - Integrity Impact: None - Availability Impact: High
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://www.linuxkernelcves.com/cves/CVE-2020-15437
Release Date: 2020-11-23
Fix Resolution: v4.4.232, v4.9.232, v4.14.190, v4.19.135, v5.4.54, v5.7.11, v5.8-rc7
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