CVE-2020-25639

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.

CVSS 3.1

4.4CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

EPSS

0.4% chance of exploitation in the next 30 days; higher than 30% of CVEs (scores of 2026-10-25)

CWE

CWE-476

Published

2021-03-04

Modified

2026-10-08

Record from

the NVD, synced 2026-10-19

Affected

• fedoraproject:fedora
• linux:linux_kernel
• redhat:enterprise_linux
• redhat:messaging_realtime_grid
• redhat:openshift_container_platform

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1876995
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HE4CT3NL6OEBRRBUKHIX63GLNVOWCVRW/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SUCBCKRHWP3UD2AVVYQJE7BIJEMCMXW5/
• https://bugzilla.redhat.com/show_bug.cgi?id=1876995
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HE4CT3NL6OEBRRBUKHIX63GLNVOWCVRW/

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