5.5

CVE-2021-3759: debian debian_linux Uncontrolled Resource Consumption

Modified
AliasesUBUNTU-CVE-2021-3759USN-5135-1DEBIAN-CVE-2021-3759
Published 23-08-2022Last modified 14-10-2026

Vulnerability summary

CVE-2021-3759 is a medium (CVSS 5.5) Uncontrolled Resource Consumption vulnerability in debian debian_linux. EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 30.3% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.36%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 29 · Related 27
DLA-3244-1OPENSUSE-SU-2021:1271-1OPENSUSE-SU-2021:3179-1OPENSUSE-SU-2021:3205-1OPENSUSE-SU-2021:3387-1OPENSUSE-SU-2021:3876-1

Timeline

  1. 23-08-2022
    PublishedVulnerability first disclosed.
  2. 14-10-2026
    Last modifiedVulnerability information updated.

Description

A memory overflow vulnerability was found in the Linux kernel’s ipc functionality of the memcg subsystem, in the way a user calls the semget function multiple times, creating semaphores. This flaw allows a local user to starve the resources, causing a denial of service. The highest threat from this vulnerability is to system availability.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.36%

Chance of exploitation in the next 30 days

Percentile

30%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.36% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard83 products
  • hyperv-daemons-6.18All versions (No fix recorded)
  • hyperv-daemons-genericAll versions (No fix recorded)
  • linux-aws-6.12< 6.12.65-r0 | All versions (No fix recorded)
  • linux-aws-6.12-boot-installedAll versions (No fix recorded)
  • linux-aws-6.12-fips-boot-installedAll versions (No fix recorded)
Ubuntu62 products
  • linux< 4.15.0-162.170 | < 5.4.0-90.101
  • linux-aws< 4.15.0-1115.122 | < 5.4.0-1059.62
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11< 5.11.0-1021.22~20.04.2
  • linux-aws-5.3All versions (No fix recorded)
Debian2 products
Linux1 product

4 vendors · 148 products

References

16 links
Show all 16 references