CVE-2020-14385: canonical ubuntu_linux Incorrect Calculation of Buffer Size
Vulnerability summary
CVE-2020-14385 is a medium (CVSS 5.5) Incorrect Calculation of Buffer Size 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 15 · Related 5Timeline
- 15-09-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
A flaw was found in the Linux kernel before 5.9-rc4. A failure of the file system metadata validator in XFS can cause an inode with a valid, user-creatable extended attribute to be flagged as corrupt. This can lead to the filesystem being shutdown, or otherwise rendered inaccessible until it is remounted, leading to a denial of service. The highest threat from this vulnerability is to system availability.
CVSS metrics
6 scores · 5 sources · 2 versions- OSV · Red hatEcosystem advisory · calculated6.2MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HDiffers
- 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
- NVDNIST5.5MediumCVSS: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, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu34 products
- linux< 5.4.0-51.56
- linux-aws< 5.4.0-1028.29
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.3All versions (No fix recorded)
- linux-aws-5.4< 5.4.0-1028.29~18.04.1
Redhat8 products
- kpatch-patch-3_10_0-1160< 0:1-1.el7
- kpatch-patch-3_10_0-1160_2_1< 0:1-1.el7
- kpatch-patch-3_10_0-1160_2_1-debuginfo< 0:1-1.el7
- kpatch-patch-3_10_0-1160_2_2< 0:1-1.el7
- kpatch-patch-3_10_0-1160_2_2-debuginfo< 0:1-1.el7
Debian2 products
- linux< 5.8.7-1
- debian_linuxEOL9.0
Canonical1 product
- ubuntu_linuxEOL18.04 | 20.04
Linux1 product
- linux_kernel< 5.9.0 | 5.9.0 | 5.9.0:rc1 | 5.9.0:rc2 | 5.9.0:rc3
Linux kernel1 product
- kernel< 5.9-rc4
6 vendors · 47 products
References
16 links- bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14385X Refsource CONFIRMIssue TrackingThird Party Advisory
lists.debian.org/debian-lts-announce/2020/09/msg00025.htmlMailing ListX Refsource MLISTThird Party Advisory- lists.opensuse.org/opensuse-security-announce/2020-10/msg00001.htmlVendor AdvisoryX Refsource SUSEBroken Link
