CVE-2020-25639 : A NULL pointer dereference flaw was found in the Linux kernel's GPU Nouveau driv

A NULL pointer dereference flaw was found in the Linux kernel's GPU Nouveau driver functionality in versions prior to 5.12-rc1 in the way the user calls ioctl DRM_IOCTL_NOUVEAU_CHANNEL_ALLOC. This flaw allows a local user to crash the system.

Published 2021-03-04 22:15:13

Updated 2021-03-10 20:47:31

Source Red Hat, Inc.

View at NVD, CVE.org

Vulnerability category: Memory Corruption

Products affected by CVE-2020-25639

Redhat » Enterprise Linux » Version: 6.0
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
Matching versions
Redhat » Enterprise Linux » Version: 7.0
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
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Redhat » Enterprise Linux » Version: 5.0
cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*
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Redhat » Enterprise Linux » Version: 8.0
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
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Redhat » Openshift Container Platform » Version: 4.4
cpe:2.3:a:redhat:openshift_container_platform:4.4:*:*:*:*:*:*:*
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Redhat » Openshift Container Platform » Version: 4.5
cpe:2.3:a:redhat:openshift_container_platform:4.5:*:*:*:*:*:*:*
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Redhat » Openshift Container Platform » Version: 4.6
cpe:2.3:a:redhat:openshift_container_platform:4.6:*:*:*:*:*:*:*
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Redhat » Messaging Realtime Grid » Version: 2.0
cpe:2.3:o:redhat:messaging_realtime_grid:2.0:*:*:*:*:*:*:*
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Linux » Linux Kernel
Versions up to, including, (<=) 5.11.2
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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Fedoraproject » Fedora » Version: 32
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
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Fedoraproject » Fedora » Version: 33
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
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Threat overview for CVE-2020-25639

Top countries where our scanners detected CVE-2020-25639

Top open port discovered on systems with this issue 53

IPs affected by CVE-2020-25639 836,580

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2020-25639!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2020-25639

EPSS FAQ

0.12%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 32 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-25639

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.9	MEDIUM	AV:L/AC:L/Au:N/C:N/I:N/A:C	3.9	6.9	NIST
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Complete
4.4	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H	0.8	3.6	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: High User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2020-25639

CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

Assigned by: secalert@redhat.com (Primary)

References for CVE-2020-25639

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HE4CT3NL6OEBRRBUKHIX63GLNVOWCVRW/

[SECURITY] Fedora 32 Update: kernel-headers-5.10.20-100.fc32 - package-announce - Fedora Mailing-Lists
Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SUCBCKRHWP3UD2AVVYQJE7BIJEMCMXW5/

[SECURITY] Fedora 33 Update: kernel-tools-5.10.20-200.fc33 - package-announce - Fedora Mailing-Lists
Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1876995

1876995 – (CVE-2020-25639) CVE-2020-25639 kernel: NULL pointer dereference via nouveau ioctl can lead to DoS
Exploit;Issue Tracking;Third Party Advisory