CVE-2021-3669

Aliases:UBUNTU-CVE-2021-3669DEBIAN-CVE-2021-3669CGA-25mx-wmgf-223wCGA-3p64-j8x4-wp79CGA-4hxx-gpc7-v2cvCGA-4jpg-mq57-r2x2CGA-5w3c-5j7x-cfv3CGA-5xcc-frjq-9vgwCGA-6pwc-v8h8-fpc2CGA-724x-8wq2-ggpwCGA-727g-4456-j2h8CGA-85qh-j676-4xr4CGA-8fh3-pcjp-mx66CGA-8vmq-pgcw-hc86CGA-99pv-466q-95x8CGA-9qw7-54xw-q92xCGA-9www-cr6h-m7ccCGA-c678-4qfq-jw56CGA-ch8v-ghpv-2cv7CGA-gprv-f58j-frrrCGA-h4wf-p6jj-7wvqCGA-h62j-79p5-fh25CGA-hccw-9chq-rw8pCGA-j4ch-j9w3-crp4CGA-j824-r62x-p6xfCGA-jfg9-hg6g-939cCGA-jgw8-hpfm-7pfcCGA-mvf7-g2r4-wvm6CGA-p22w-p8ff-397qCGA-p4cv-68h7-mc74CGA-pgxq-4c4q-54hrCGA-qv82-v2rv-72j9CGA-qwwp-599r-7grqCGA-rwr3-842x-6rh5CGA-vfxg-6w47-jpvxCGA-vh23-6f26-vmp4CGA-w99m-79gg-7p58
Advisory lineage Upstream: 0 Downstream: 31
Modified
Published: 26 Aug 2022, 15:25
Last modified:03 Nov 2025, 21:44

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.29% LOW
0% probability +0.28%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

26 Aug 2022, 15:25
Published
Vulnerability first disclosed
03 Nov 2025, 21:44
Last Modified
Vulnerability information updated

Description

A flaw was found in the Linux kernel. Measuring usage of the shared memory does not scale with large shared memory segment counts which could lead to resource exhaustion and DoS.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.29%• Percentile: 22%

Techniques & Countermeasures

  • CWE-400•Uncontrolled Resource Consumption

    The product does not properly control the allocation and maintenance of a limited resource.

  • CWE-770•Allocation of Resources Without Limits or Throttling

    The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

Affected Systems

  • chainguard•linux-aws-6.12

    < 0

  • chainguard•linux-aws-6.18

    < 0

  • chainguard•linux-aws-generic

    < 0

  • chainguard•linux-azure-6.12

    < 0

  • chainguard•linux-azure-6.18

    < 0

  • chainguard•linux-azure-generic

    < 0

  • chainguard•linux-gcp-6.12

    < 0

  • chainguard•linux-gcp-6.18

    < 0

  • chainguard•linux-gcp-generic

    < 0

  • chainguard•linux-qemu-6.12

    < 6.12.67-r0

  • chainguard•linux-qemu-6.18

    < 6.18.7-r0

  • chainguard•linux-qemu-generic

    < 0

  • chainguard•linux-qemu-rc

    < 6.17_rc5-r0

  • chainguard•linux-qemu-rc-boot-installed

    < 6.17_rc5-r0

  • chainguard•linux-qemu-rc-fips-boot-installed

    < 6.17_rc5-r0

  • chainguard•linux-qemu-rc-headers

    < 6.17_rc5-r0

  • chainguard•linux-qemu-rc-modules

    < 6.17_rc5-r0

  • chainguard•linux-vmware-6.18

    < 6.18.7-r0

  • chainguard•linux-vmware-generic

    < 0

  • debian•linux

    < 5.10.226-1 | < 5.15.3-1 | < 5.15.3-1 | < 5.15.3-1

  • ubuntu•linux

    all | < 4.4.0-239.273 | < 4.15.0-208.220 | < 5.4.0-146.163

  • ubuntu•linux-aws

    < 4.4.0-1117.123 | < 4.4.0-1155.170 | < 4.15.0-1153.166 | < 5.4.0-1099.107

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.11

    all

  • ubuntu•linux-aws-5.13

    all

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.4

    < 5.4.0-1099.107~18.04.1

  • ubuntu•linux-aws-5.8

    all

  • ubuntu•linux-aws-fips

    < 4.15.0-2092.98 | all | < 5.4.0-1099.107+fips1

  • ubuntu•linux-aws-hwe

    < 4.15.0-1153.166~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1162.177~14.04.1 | < 4.15.0-1162.177~16.04.1 | all | < 5.4.0-1105.111

  • ubuntu•linux-azure-4.15

    < 4.15.0-1162.177

  • ubuntu•linux-azure-5.11

    all

  • ubuntu•linux-azure-5.13

    all

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.4

    < 5.4.0-1105.111~18.04.1

  • ubuntu•linux-azure-5.8

    all

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fips

    < 4.15.0-2071.77 | all | < 5.4.0-1105.111+fips1

  • ubuntu•linux-bluefield

    all | < 5.4.0-1060.66

  • ubuntu•linux-dell300x

    < 4.15.0-1062.67

  • ubuntu•linux-fips

    < 4.4.0-1088.95 | all | < 4.15.0-1108.119 | < 5.4.0-1074.83

  • ubuntu•linux-gcp

    < 4.15.0-1147.163~16.04.1 | all | < 5.4.0-1102.111

  • ubuntu•linux-gcp-4.15

    < 4.15.0-1147.163

  • ubuntu•linux-gcp-5.11

    all

  • ubuntu•linux-gcp-5.13

    all

  • ubuntu•linux-gcp-5.3

    all

  • ubuntu•linux-gcp-5.4

    < 5.4.0-1102.111~18.04.2

  • ubuntu•linux-gcp-5.8

    all

  • ubuntu•linux-gcp-edge

    all

Showing first 50 affected entries in server-rendered view.

References (23)