CVE-2020-11884
HIGHCVSS 7/10EPSS 0.40%
Last modified
CVE-2020-11884 is a high-severity vulnerability rated 7/10 on the CVSS scale. 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.. EPSS estimates a 0.40% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.15, < 4.19.119 |
| Linux | Linux Kernel | >= 4.20, < 5.4.36 |
| Linux | Linux Kernel | >= 5.5, < 5.6.8 |
| Canonical | Ubuntu Linux | 16.04 |
| Canonical | Ubuntu Linux | 18.04 |
| Canonical | Ubuntu Linux | 19.10 |
| Canonical | Ubuntu Linux | 20.04 |
| Debian | Debian Linux | 10.0 |
| Fedoraproject | Fedora | 30 |
| Fedoraproject | Fedora | 31 |
| Fedoraproject | Fedora | 32 |
| Netapp | Active Iq Unified Manager | All versions |
| Netapp | Cloud Backup | All versions |
| Netapp | Element Software | All versions |
| Netapp | Hci Management Node | All versions |
| Netapp | Solidfire | All versions |
| Netapp | Steelstore Cloud Integrated Storage | All versions |
| Netapp | Solidfire Baseboard Management Controller | All versions |
| Netapp | Bootstrap Os | All versions |
| Netapp | A700s Firmware | All versions |
| Netapp | H300s Firmware | All versions |
| Netapp | H500s Firmware | All versions |
| Netapp | H700s Firmware | All versions |
| Netapp | H300e Firmware | All versions |
| Netapp | H500e Firmware | All versions |
| Netapp | H700e Firmware | All versions |
| Netapp | H410s Firmware | All versions |
| Netapp | H410c Firmware | All versions |
| Netapp | H610c Firmware | All versions |
| Netapp | H610s Firmware | All versions |
References
- https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=215d1f3928713d6eaec67244bcda72105b898000Mailing List, Patch, Vendor Advisory
- 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://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
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-11884?
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.
How severe is CVE-2020-11884?
CVE-2020-11884 has a CVSS score of 7/10 (HIGH severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.
How do I fix CVE-2020-11884?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2020-11884?
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