CVE-2020-8992: canonical ubuntu_linux Uncontrolled Resource Consumption
Vulnerability summary
CVE-2020-8992 is a medium (CVSS 5.5) Uncontrolled Resource Consumption vulnerability in canonical ubuntu_linux. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 35.9% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 18 · Related 18Timeline
- 14-02-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
ext4_protect_reserved_inode in fs/ext4/block_validity.c in the Linux kernel through 5.5.3 allows attackers to cause a denial of service (soft lockup) via a crafted journal size.
CVSS metrics
4 scores · 3 sources · 2 versions- 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
EPSS trend
Probability
0.42%
Chance of exploitation in the next 30 days
Percentile
36%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.42% on 04-10-2026
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 causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu33 products
- linux< 4.4.0-185.215 | < 4.15.0-96.97
- linux-aws< 4.4.0-1074.78 | < 4.4.0-1110.121 | < 4.15.0-1065.69
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.3< 5.3.0-1017.18~18.04.1
- linux-aws-hwe< 4.15.0-1065.69~16.04.1
Netapp7 products
- active_iq_unified_managerna
- cloud_backupna
- data_availability_servicesna
- h410c_firmwarena
- hci_management_nodena
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 18.04 | 19.10
Debian1 product
- linux< 5.5.13-1
Linux1 product
- linux_kernel≤ 5.5.3
Opensuse1 product
- leapEOL15.1
6 vendors · 44 products
References
18 links- lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
