CVE-2020-24394: canonical ubuntu_linux
Vulnerability summary
CVE-2020-24394 is a high (CVSS 7.1) vulnerability in canonical ubuntu_linux. EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 29.9% of scored vulnerabilities.
Not severe (CVSS 7.1, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 24 · Related 17Timeline
- 19-08-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
In the Linux kernel before 5.7.8, fs/nfsd/vfs.c (in the NFS server) can set incorrect permissions on new filesystem objects when the filesystem lacks ACL support, aka CID-22cf8419f131. This occurs because the current umask is not considered.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- OSV · DebianEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
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
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.
Ubuntu43 products
- linux< 4.15.0-115.116 | < 5.4.0-45.49
- linux-aws< 4.15.0-1080.84 | < 5.4.0-1022.22
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.3< 5.3.0-1033.35
- linux-aws-5.4< 5.4.0-1022.22~18.04.1
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 18.04 | 20.04
Debian1 product
- linux< 5.7.6-1
Linux1 product
- linux_kernel< 5.7.8
Opensuse1 product
- leapEOL15.1
Oracle1 product
- sd-wan_edge8.2
Starwindsoftware1 product
- starwind_virtual_sanv8:build12533 | v8:build12658 | v8:build12859 | v8:build13170 | v8:build13586 | v8:build13861
7 vendors · 49 products
References
17 links
- lists.opensuse.org/opensuse-security-announce/2020-09/msg00007.htmlVendor AdvisoryThird Party Advisory
- security.netapp.com/advisory/ntap-20200904-0003/Third Party Advisory
- www.starwindsoftware.com/security/sw-20210325-0004/Third Party Advisory
