Medium severity · published Nov 3, 2021
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…
4.7
CVSS
0.5%
EPSS
No
On KEV
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).
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
after 2.6.12 before 5.4.162; after 5.5 before 5.10.82; after 5.11 before 5.15.5; 2.6.12; 2.6.12; 2.6.12; +3 more · source: NVD
CC
Communications Cloud Native Core Binding Support Function · Oracle
22.1.3 · source: NVD
CC
Communications Cloud Native Core Network Exposure Function · Oracle
22.1.1 · source: NVD
CC
Communications Cloud Native Core Policy · Oracle
22.2.0 · source: NVD
FE
Fedora · Fedoraproject
33 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-27820
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-27820
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1901726
Mailing List
https://lore.kernel.org/dri-devel/20201103194912.184413-2-jcline%40redhat.com/
Mailing List
https://lore.kernel.org/dri-devel/20201103194912.184413-3-jcline%40redhat.com/
Mailing List
https://lore.kernel.org/dri-devel/20201103194912.184413-4-jcline%40redhat.com/
Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html
More from Kernel
9.8
CVE-2025-39682
tls: fix handling of zero-length records on the rx_list
8.8
CVE-2026-53266
netfilter: bridge: make ebt_snat ARP rewrite writable
8.8
CVE-2013-6282
Linux Kernel Improper Input Validation Vulnerability
8.4
CVE-2022-0185
Linux Kernel Heap-Based Buffer Overflow Vulnerability
8.4
CVE-2013-2094
Linux Kernel Privilege Escalation Vulnerability