Vulnerability · Published Nov 23, 2020 · Assigned by openEuler
CVE-2020-15437
Medium 4.4
In plain English
A medium-severity security flaw in linux kernel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)4.4Medium
Exploit odds (30 days)0.4%top 62.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | kernel-tools-libs-devel | 4.18.0-305.el8 | ALSA-2021:1578 |
| Debian:12 | linux | 5.7.17-1 | DEBIAN-CVE-2020-15437 |
| Debian:13 | linux | 5.7.17-1 | DEBIAN-CVE-2020-15437 |
| Debian:14 | linux | 5.7.17-1 | DEBIAN-CVE-2020-15437 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2020-15437 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2020-15437 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2020-15437 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | linux kernel | 5.7 (verified), possibly others 4.18 |
References
- https://lkml.org/lkml/2020/7/21/80 x_refsource_MISC