HOMEVULNERABILITIESCVE-2020-11884
HIGH

CVE-2020-11884

CWE-362Published: April 29, 2020· Updated: Jun 17, 2026

7.0
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2020-11884 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.0.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityHigh
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Canonical1 product(s)
ubuntu linux
Debian1 product(s)
debian linux
Fedora1 product(s)
fedora
Linux1 product(s)
linux kernel
netapp31 product(s)
active iq unified managercloud backupelement softwarehci management nodesolidfiresteelstore cloud integrated storagesolidfire baseboard management controllerbootstrap oshci compute nodea700s firmwarea700sh300s firmware+19
Source: NVD CPE · 40 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=215d1f3928713d6eaec67244bcda72105b898000
PATCHhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3f777e19d171670ab558a6d5e6b1ac7f9b6c574f
PATCHhttps://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=215d1f3928713d6eaec67244bcda72105b898000
PATCHhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3f777e19d171670ab558a6d5e6b1ac7f9b6c574f
ADVISORYhttps://security.netapp.com/advisory/ntap-20200608-0001/
ADVISORYhttps://usn.ubuntu.com/4342-1/
ADVISORYhttps://usn.ubuntu.com/4343-1/
ADVISORYhttps://usn.ubuntu.com/4345-1/
ADVISORYhttps://www.debian.org/security/2020/dsa-4667
ADVISORYhttps://security.netapp.com/advisory/ntap-20200608-0001/
ADVISORYhttps://usn.ubuntu.com/4342-1/
ADVISORYhttps://usn.ubuntu.com/4343-1/
ADVISORYhttps://usn.ubuntu.com/4345-1/
ADVISORYhttps://www.debian.org/security/2020/dsa-4667

All References (20)

→
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=215d1f3928713d6eaec67244bcda72105b898000Mailing List · Patch · Vendor Advisory
→
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3f777e19d171670ab558a6d5e6b1ac7f9b6c574fPatch · Vendor Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3TZBP2HINNAX7HKHCOUMIFVQPV6GWMCZ/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AQUVKC3IPUC5B374VVAZV4J5P3GAUGSW/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKVJMS4GQRH5SO35WM5GINCFAGXQ3ZW6/
→
https://security.netapp.com/advisory/ntap-20200608-0001/Third Party Advisory
→
https://usn.ubuntu.com/4342-1/Third Party Advisory
→
https://usn.ubuntu.com/4343-1/Third Party Advisory
→
https://usn.ubuntu.com/4345-1/Third Party Advisory
→
https://www.debian.org/security/2020/dsa-4667Third Party Advisory
→
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=215d1f3928713d6eaec67244bcda72105b898000Mailing List · Patch · Vendor Advisory
→
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3f777e19d171670ab558a6d5e6b1ac7f9b6c574fPatch · Vendor Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3TZBP2HINNAX7HKHCOUMIFVQPV6GWMCZ/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AQUVKC3IPUC5B374VVAZV4J5P3GAUGSW/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKVJMS4GQRH5SO35WM5GINCFAGXQ3ZW6/

Quick Facts

CVE IDCVE-2020-11884
CVSS Score7.0 / 10
SeverityHIGH
WeaknessCWE-362
CISA KEVNo
Affected5 vendor(s)
PublishedApr 29, 2020

Related CVEs (CWE-362)

CVE-2025-66419
10.0
CVE-2014-0703
10.0
CVE-2015-8556
10.0
CVE-2008-6598
10.0
CVE-2010-1228
10.0
CVE-2020-1660
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-11884 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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