vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2020-25639

MEDIUM
4.4
CVSS Score
Published: March 4, 2021 at 09:56 PM UTC
Updated: October 8, 2026 at 09:17 PM UTC
6 products affected across 3 vendorsLinux KernelFedoraEnterprise Linux

Using kernel by N/A?

Get instant alerts when new vulnerabilities affect kernel - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM4.4
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Fedora· Fedora Projectrpm
95%
3233
Linux Kernel· Linux
95%
v ≤ 5.11.2*Linux kernel versions prior to 5.12-rc1
Enterprise Linux· Red Hatrpm
95%
5.06.07.08.0
Messaging Realtime Grid· Red Hat
95%
2.0
OpenShift Container Platform· Red Hatcontainer
95%
4.44.54.6
Kernel· Red Hat
60%
v < 5.12-rc1
Affected range stops below 5.12-rc1, so it looks safe — our inference, not a vendor statement

References (3)

x_refsource_MISCExploitIssue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1876995
Vendor Advisoryx_refsource_FEDORA
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HE4CT3NL6OEBRRBUKHIX63GLNVOWCVRW/
Vendor Advisoryx_refsource_FEDORA
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SUCBCKRHWP3UD2AVVYQJE7BIJEMCMXW5/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.4MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card