CVE-2021-3669: debian debian_linux Uncontrolled Resource Consumption
Modified
AliasesUBUNTU-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
Published 26-08-2022Last modified 03-11-2025
Vulnerability summary
CVE-2021-3669 is a medium (CVSS 5.5) Uncontrolled Resource Consumption vulnerability in debian debian_linux. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 22.4% 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
0.30%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 29 · Related 28DLA-3912-1OPENSUSE-SU-2021:1357-1OPENSUSE-SU-2021:1365-1OPENSUSE-SU-2021:3338-1OPENSUSE-SU-2021:3387-1OPENSUSE-SU-2021:3447-1RHSA-2022:1975RHSA-2022:1988SUSE-SU-2021:3337-1SUSE-SU-2021:3338-1SUSE-SU-2021:3339-1SUSE-SU-2021:3387-1SUSE-SU-2021:3415-1SUSE-SU-2021:3447-1USN-5924-1USN-5927-1USN-5975-1USN-5980-1USN-5981-1USN-5984-1USN-5985-1USN-5991-1USN-6001-1USN-6009-1USN-6013-1USN-6014-1USN-6020-1USN-6030-1USN-6151-1CGA-9H9F-PW7M-6WWXCGA-GH6F-P8Q8-7GG4
Timeline
- 26-08-2022PublishedVulnerability first disclosed.
- 03-11-2025Last modifiedVulnerability 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
4 scores · 4 sources · 1 versionMedium 5.5Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · ChainguardEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.30%
Chance of exploitation in the next 30 days
Percentile
22%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.29% on 04-10-2026
04-10-202603-11-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-400Uncontrolled Resource ConsumptionThe product does not properly control the allocation and maintenance of a limited resource.
- CWE-770Allocation of Resources Without Limits or ThrottlingThe 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
Version check
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu71 products
- linuxAll versions (No fix recorded) | < 4.4.0-239.273 | < 4.15.0-208.220 | < 5.4.0-146.163
- linux-aws< 4.4.0-1117.123 | < 4.4.0-1155.170 | < 4.15.0-1153.166 | < 5.4.0-1099.107
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
- linux-aws-5.13All versions (No fix recorded)
Chainguard19 products
- linux-aws-6.12All versions (No fix recorded)
- linux-aws-6.18All versions (No fix recorded)
- linux-aws-genericAll versions (No fix recorded)
- linux-azure-6.12All versions (No fix recorded)
- linux-azure-6.18All versions (No fix recorded)
Redhat18 products
- build_of_quarkus≥ 2.0, < 2.7
- codeready_linux_builderna
- developer_tools1.0
- enterprise_linuxEOL6.0 | 7.0 | 8.0
- enterprise_linux_aus8.6
Debian2 products
- linux< 5.15.3-1
- debian_linuxEOL10.0 | 11.0
Ibm2 products
- spectrum_copy_data_management≥ 2.2.0.0, ≤ 2.2.15.0
- spectrum_protect_plus≥ 10.1.0, ≤ 10.1.10.2
Fedoraproject1 product
- fedoraEOL34
6 vendors · 113 products
References
24 links- access.redhat.com/security/cve/CVE-2021-3669X Refsource MISCREPORTIssue TrackingThird Party Advisory
security-tracker.debian.org/tracker/CVE-2021-3669X Refsource MISCAdvisoryREPORTIssue TrackingThird Party Advisory
