CVE-2020-27820
MEDIUMCVSS 4.7/10EPSS 0.47%
Last modified
CVE-2020-27820 is a medium-severity vulnerability rated 4.7/10 on the CVSS scale. A vulnerability was found in Linux kernel, where a use-after-frees in nouveau's postclose() handler could happen if removing device (that is not common to remove video card physically without power-off, but same happens if "unbind" the driver).. EPSS estimates a 0.47% chance of exploitation in the next 30 days.
Description
A vulnerability was found in Linux kernel, where a use-after-frees in nouveau's postclose() handler could happen if removing device (that is not common to remove video card physically without power-off, but same happens if "unbind" the driver).
Metrics
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | > 2.6.12, < 5.4.162 |
| Linux | Linux Kernel | > 5.5, < 5.10.82 |
| Linux | Linux Kernel | > 5.11, < 5.15.5 |
| Linux | Linux Kernel | 2.6.12 |
| Fedoraproject | Fedora | 33 |
| Oracle | Communications Cloud Native Core Binding Support Function | 22.1.3 |
| Oracle | Communications Cloud Native Core Network Exposure Function | 22.1.1 |
| Oracle | Communications Cloud Native Core Policy | 22.2.0 |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1901726Issue Tracking, Patch, Third Party Advisory
- https://lore.kernel.org/dri-devel/20201103194912.184413-2-jcline%40redhat.com/Mailing List, Vendor Advisory
- https://lore.kernel.org/dri-devel/20201103194912.184413-3-jcline%40redhat.com/Mailing List, Vendor Advisory
- https://lore.kernel.org/dri-devel/20201103194912.184413-4-jcline%40redhat.com/Mailing List, Vendor Advisory
- https://www.oracle.com/security-alerts/cpujul2022.htmlThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1901726Issue Tracking, Patch, Third Party Advisory
- https://lore.kernel.org/dri-devel/20201103194912.184413-2-jcline%40redhat.com/Mailing List, Vendor Advisory
- https://lore.kernel.org/dri-devel/20201103194912.184413-3-jcline%40redhat.com/Mailing List, Vendor Advisory
- https://lore.kernel.org/dri-devel/20201103194912.184413-4-jcline%40redhat.com/Mailing List, Vendor Advisory
- https://www.oracle.com/security-alerts/cpujul2022.htmlThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-27820?
A vulnerability was found in Linux kernel, where a use-after-frees in nouveau's postclose() handler could happen if removing device (that is not common to remove video card physically without power-off, but same happens if "unbind" the driver).
How severe is CVE-2020-27820?
CVE-2020-27820 has a CVSS score of 4.7/10 (MEDIUM severity). The EPSS model estimates a 0.47% probability of exploitation in the next 30 days.
How do I fix CVE-2020-27820?
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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