3.5

CVE-2021-45486: linux linux_kernel

CVSS: 3.5v3.1LowModified
AliasesUBUNTU-CVE-2021-45486DEBIAN-CVE-2021-45486
Published 25-12-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2021-45486 is a low (CVSS 3.5) vulnerability in linux linux_kernel. EPSS estimates a 0.40% chance of exploitation in the next 30 days, higher than 32.7% of scored vulnerabilities.

Overall risk
14/100
0100
Low · default modelHow is this calculated?
CVSS score
3.5/10
010
Low · v3.1 (NVD)
EPSS score
0.40%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 25 · Related 21
OPENSUSE-SU-2022:0056-1OPENSUSE-SU-2022:0131-1OPENSUSE-SU-2022:0169-1OPENSUSE-SU-2022:0198-1OPENSUSE-SU-2022:0366-1RHSA-2022:1975

Timeline

  1. 25-12-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

In the IPv4 implementation in the Linux kernel before 5.12.4, net/ipv4/route.c has an information leak because the hash table is very small.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.40%

Chance of exploitation in the next 30 days

Percentile

33%

Versus all other CVEs

30-day change

+0.03 pp

From 0.37% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.40%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu54 products
  • linuxAll versions (No fix recorded) | < 4.4.0-223.256 | < 4.15.0-156.163 | < 5.4.0-77.86
  • linux-aws< 4.4.0-1103.108 | < 4.4.0-1139.153 | < 4.15.0-1111.118 | < 5.4.0-1051.53
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.3All versions (No fix recorded)
  • linux-aws-5.4< 5.4.0-1051.53~18.04.1
Oracle3 products
Debian1 product
  • linux< 5.10.38-1
Linux1 product

4 vendors · 59 products

References

10 links