5.9

CVE-2021-3714: linux linux_kernel

CVSS: 5.9v3.1MediumModified
AliasesUBUNTU-CVE-2021-3714DEBIAN-CVE-2021-3714CGA-2c45-vcpq-fv57
Published 23-08-2022Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-3714 is a medium (CVSS 5.9) vulnerability in linux linux_kernel. EPSS estimates a 1.63% chance of exploitation in the next 30 days, higher than 75.7% of scored vulnerabilities.

Overall risk
24/100
0100
Low · default modelHow is this calculated?
CVSS score
5.9/10
010
Medium · v3.1 (NVD)
EPSS score
1.63%
0%100%
Low · +0.10 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
CGA-3VWH-35GJ-MFQV

Timeline

  1. 23-08-2022
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

A flaw was found in the Linux kernels memory deduplication mechanism. Previous work has shown that memory deduplication can be attacked via a local exploitation mechanism. The same technique can be used if an attacker can upload page sized files and detect the change in access time from a networked service to determine if the page has been merged.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

1.63%

Chance of exploitation in the next 30 days

Percentile

76%

Versus all other CVEs

30-day change

+0.10 pp

From 1.52% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.63%

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

Ubuntu121 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Chainguard78 products
  • hyperv-daemons-6.18All versions (No fix recorded)
  • hyperv-daemons-genericAll versions (No fix recorded)
  • linux-aws-6.12All versions (No fix recorded) | < 6.12.65-r0
  • linux-aws-6.12-boot-installedAll versions (No fix recorded)
  • linux-aws-6.12-fips-boot-installedAll versions (No fix recorded)
Debian1 product
  • linuxAll versions (No fix recorded)

3 vendors · 200 products · Showing 200 of 251. Use Open JSON for the complete list.

References

7 links