CVE-2020-11884: canonical ubuntu_linux
Vulnerability summary
CVE-2020-11884 is a high (CVSS 7.0) vulnerability in canonical ubuntu_linux. EPSS estimates a 0.40% chance of exploitation in the next 30 days, higher than 33.9% of scored vulnerabilities.
Not severe (CVSS 7, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 6 · Related 2Timeline
- 29-04-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
In the Linux kernel 4.19 through 5.6.7 on the s390 platform, code execution may occur because of a race condition, as demonstrated by code in enable_sacf_uaccess in arch/s390/lib/uaccess.c that fails to protect against a concurrent page table upgrade, aka CID-3f777e19d171. A crash could also occur.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.0HighCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.0HighCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.40%
Chance of exploitation in the next 30 days
Percentile
34%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.40% 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.
Netapp19 products
Ubuntu15 products
- linux< 4.15.0-99.100 | < 5.4.0-28.32
- linux-aws-5.3< 5.3.0-1019.21~18.04.1
- linux-aws-fips< 4.15.0-2018.18 | All versions (No fix recorded)
- linux-azure-4.15< 4.15.0-1083.93
- linux-azure-fdeAll versions (No fix recorded)
Debian2 products
- linux< 5.6.7-1
- debian_linuxEOL10.0
Canonical1 product
- ubuntu_linuxEOL16.04 | 18.04 | 19.10 | 20.04
Fedoraproject1 product
- fedoraEOL30 | 31 | 32
Linux1 product
- linux_kernel≥ 4.15, < 4.19.119 | ≥ 4.20, < 5.4.36 | ≥ 5.5, < 5.6.8
6 vendors · 39 products
