CVE-2020-27820

MediumCVSS 4.7/10Last modified Jun 17, 2026

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 4.7/10CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-416

Affected software

Vendor	Product	Versions
n/a	kernel	to be fixed in RHEL-9 release

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: Nov 3, 2021
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2020

CVE-2020-278216.0A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of CVE-2020-278225.9A flaw was found in Wildfly affecting versions 19.0.0.Final, 19.1.0.Final, 20.0.0.Final, 20.0.1.Final, and 21.0.0.Final. When an application CVE-2020-278237.8A flaw was found in OpenJPEG’s encoder. This flaw allows an attacker to pass specially crafted x,y offset input to OpenJPEG to use during en CVE-2020-278245.5A flaw was found in OpenJPEG’s encoder in the opj_dwt_calc_explicit_stepsizes() function. This flaw allows an attacker who can supply crafte CVE-2020-278255.7A use-after-free flaw was found in kernel/trace/ring_buffer.c in Linux kernel (before 5.10-rc1). There was a race problem in trace_open and CVE-2020-278264.2A flaw was found in Keycloak before version 12.0.0 where it is possible to update the user's metadata attributes using Account REST API. Thi CVE-2020-278277.5A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to han CVE-2020-278287.8There's a flaw in jasper's jpc encoder in versions prior to 2.0.23. Crafted input provided to jasper by an attacker could cause an arbitrary CVE-2020-278295.5A heap based buffer overflow in coders/tiff.c may result in program crash and denial of service in ImageMagick before 7.0.10-45.CVE-2020-27835.3Vulnerability in the Oracle Outside In Technology product of Oracle Fusion Middleware (component: Outside In Filters). Supported versions th CVE-2020-278305.5A vulnerability was found in Linux Kernel where in the spk_ttyio_receive_buf2() function, it would dereference spk_ttyio_synth without check CVE-2020-278314.3A flaw was found in Red Hat Quay, where it does not properly protect the authorization token when authorizing email addresses for repository