7.8

CVE-2018-20854: linux linux_kernel Out-of-bounds Read

CVSS: 7.8v3.0HighModified
AliasesUBUNTU-CVE-2018-20854
Published 26-07-2019Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-20854 is a high (CVSS 7.8) Out-of-bounds Read vulnerability in linux linux_kernel. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 31.6% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.0 (NVD)
EPSS score
0.39%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 26-07-2019
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in the Linux kernel before 4.20. drivers/phy/mscc/phy-ocelot-serdes.c has an off-by-one error with a resultant ctrl->phys out-of-bounds read.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.39%

Chance of exploitation in the next 30 days

Percentile

32%

Versus all other CVEs

30-day change

0.00 pp

From 0.39% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.39%

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

Ubuntu14 products
  • linux< 4.2.0-16.19 | < 4.13.0-16.19
  • linux-aws< 4.4.0-1001.10 | < 4.15.0-1001.1
  • linux-aws-hwe< 4.15.0-1030.31~16.04.1
  • linux-azure< 4.11.0-1009.9 | < 4.15.0-1002.2
  • linux-gcp< 4.10.0-1004.4 | < 4.15.0-1001.1
Linux1 product

2 vendors · 15 products

References

7 links