USN-4343-1
- Source
- https://ubuntu.com/security/notices/USN-4343-1
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4343-1.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/USN-4343-1
- Upstream
- Related
- Published
- 2020-04-28T23:27:12Z
- Modified
- 2026-06-03T13:33:32Z
- Summary
- linux vulnerability
- Details
-
Al Viro discovered that the Linux kernel for s390x systems did not properly perform page table upgrades for kernel sections that use secondary address mode. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code.
- References
Affected packages
Ubuntu:20.04:LTS / linux
Package
- Name
- linux
- Purl
- pkg:deb/ubuntu/linux?arch=source&distro=focal
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affectedFixed5.4.0-28.32
Affected versions
5.*
5.3.0-18.19
5.3.0-24.26
5.4.0-9.12
5.4.0-18.22
5.4.0-21.25
5.4.0-24.28
5.4.0-25.29
5.4.0-26.30
Ecosystem specific
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}
Database specific
cves_map
{
"cves": [
{
"id": "CVE-2020-11884",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:20.04:LTS"
}
source
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4343-1.json"