CVE-2021-45485

Updated: 2025-08-20 01:47:00.011609

Description:

In the IPv6 implementation in the Linux kernel before 5.13.3, net/ipv6/output_core.c has an information leak because of certain use of a hash table which, although big, doesn't properly consider that IPv6-based attackers can typically choose among many IPv6 source addresses.


Links NIST CIRCL RHEL Ubuntu

Severity

Severity Score
CVSS Version 2.x MEDIUM 5.0
CVSS Version 3.x HIGH 7.5

Status

OS name Project name Version Score Severity Status Errata Last updated

Statement

AlmaLinux 9.2 ESU kernel 5.14.0 7.5 HIGH Already Fixed 2024-05-31 10:03:23
CentOS 6 ELS kernel 2.6.32 7.5 HIGH Released CLSA-2024:1705494430 2024-02-05 08:45:19
CentOS 7 ELS kernel 3.10.0 7.5 HIGH Released CLSA-2024:1720468480 2024-07-23 17:33:19
CentOS 8.4 ELS kernel 4.18.0 7.5 HIGH Released CLSA-2022:1651145959 2022-04-28 15:59:34
CentOS 8.5 ELS kernel 4.18.0 7.5 HIGH Released CLSA-2022:1651146021 2022-04-28 15:59:02
CentOS Stream 8 ELS kernel 4.18.0 7.5 HIGH Already Fixed 2024-06-09 11:20:32
CloudLinux 6 ELS kernel 2.6.32 7.5 HIGH Ignored 2025-01-10 22:44:25
CloudLinux 7 ELS kernel 3.10.0 7.5 HIGH Ignored 2025-01-10 22:43:41 CloudLinux 6 and 7 support is limited and provided on demand. We strongly recommend upgrading to Clo...
Oracle Linux 6 ELS kernel 2.6.32 7.5 HIGH Released CLSA-2024:1705496067 2024-01-17 08:57:52
RHEL 7 ELS kernel 3.10.0 7.5 HIGH Released CLSA-2025:1750353839 2025-06-20 00:28:06
Total: 13