CVE-2020-25639: Null Pointer Dereference
First published: Tue Sep 08 2020(Updated: )
A flaw was found in the Linux kernel where an unprivileged console user can crash kernel via a nouveau ioctl. Reference: <a href="https://lists.freedesktop.org/archives/nouveau/2020-August/036682.html">https://lists.freedesktop.org/archives/nouveau/2020-August/036682.html</a>
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <=5.11.2 | |
| Fedoraproject Fedora | =32 | |
| Fedoraproject Fedora | =33 | |
| Redhat Openshift Container Platform | =4.4 | |
| Redhat Openshift Container Platform | =4.5 | |
| Redhat Openshift Container Platform | =4.6 | |
| Redhat Enterprise Linux | =5.0 | |
| Redhat Enterprise Linux | =6.0 | |
| Redhat Enterprise Linux | =7.0 | |
| Redhat Enterprise Linux | =8.0 | |
| Redhat Messaging Realtime Grid | =2.0 | |
| redhat/Linux kernel | <5.12 | 5.12 |
| ubuntu/linux | <5.4.0-73.82 | 5.4.0-73.82 |
| ubuntu/linux | <5.8.0-53.60 | 5.8.0-53.60 |
| ubuntu/linux | <5.12~ | 5.12~ |
| ubuntu/linux-aws | <5.4.0-1048.50 | 5.4.0-1048.50 |
| ubuntu/linux-aws | <5.8.0-1033.35 | 5.8.0-1033.35 |
| ubuntu/linux-aws | <5.12~ | 5.12~ |
| ubuntu/linux-aws-5.0 | <5.12~ | 5.12~ |
| ubuntu/linux-aws-5.11 | <5.12~ | 5.12~ |
| ubuntu/linux-aws-5.13 | <5.12~ | 5.12~ |
| ubuntu/linux-aws-5.3 | <5.12~ | 5.12~ |
| ubuntu/linux-aws-5.4 | <5.4.0-1048.50~18.04.1 | 5.4.0-1048.50~18.04.1 |
| ubuntu/linux-aws-5.4 | <5.12~ | 5.12~ |
| ubuntu/linux-aws-5.8 | <5.12~ | 5.12~ |
| ubuntu/linux-aws-hwe | <5.12~ | 5.12~ |
| ubuntu/linux-azure | <5.4.0-1047.49 | 5.4.0-1047.49 |
| ubuntu/linux-azure | <5.8.0-1032.34 | 5.8.0-1032.34 |
| ubuntu/linux-azure | <5.12~ | 5.12~ |
| ubuntu/linux-azure-4.15 | <5.12~ | 5.12~ |
| ubuntu/linux-azure-5.11 | <5.12~ | 5.12~ |
| ubuntu/linux-azure-5.13 | <5.12~ | 5.12~ |
| ubuntu/linux-azure-5.3 | <5.12~ | 5.12~ |
| ubuntu/linux-azure-5.4 | <5.4.0-1047.49~18.04.1 | 5.4.0-1047.49~18.04.1 |
| ubuntu/linux-azure-5.4 | <5.12~ | 5.12~ |
| ubuntu/linux-azure-edge | <5.12~ | 5.12~ |
| ubuntu/linux-azure-fde | <5.4.0-1047.49 | 5.4.0-1047.49 |
| ubuntu/linux-azure-fde | <5.12~ | 5.12~ |
| ubuntu/linux-bluefield | <5.4.0-1011.14 | 5.4.0-1011.14 |
| ubuntu/linux-bluefield | <5.12~ | 5.12~ |
| ubuntu/linux-dell300x | <5.12~ | 5.12~ |
| ubuntu/linux-fips | <5.12~ | 5.12~ |
| ubuntu/linux-gcp | <5.4.0-1043.46 | 5.4.0-1043.46 |
| ubuntu/linux-gcp | <5.8.0-1031.32 | 5.8.0-1031.32 |
| ubuntu/linux-gcp | <5.12~ | 5.12~ |
| ubuntu/linux-gcp-4.15 | <5.12~ | 5.12~ |
| ubuntu/linux-gcp-5.11 | <5.12~ | 5.12~ |
| ubuntu/linux-gcp-5.13 | <5.12~ | 5.12~ |
| ubuntu/linux-gcp-5.3 | <5.12~ | 5.12~ |
| ubuntu/linux-gcp-5.4 | <5.4.0-1043.46~18.04.1 | 5.4.0-1043.46~18.04.1 |
| ubuntu/linux-gcp-5.8 | <5.12~ | 5.12~ |
| ubuntu/linux-gcp-edge | <5.12~ | 5.12~ |
| ubuntu/linux-gke | <5.4.0-1043.45 | 5.4.0-1043.45 |
| ubuntu/linux-gke | <5.12~ | 5.12~ |
| ubuntu/linux-gke-4.15 | <5.12~ | 5.12~ |
| ubuntu/linux-gke-5.0 | <5.12~ | 5.12~ |
| ubuntu/linux-gke-5.3 | <5.12~ | 5.12~ |
| ubuntu/linux-gke-5.4 | <5.4.0-1043.45~18.04.1 | 5.4.0-1043.45~18.04.1 |
| ubuntu/linux-gke-5.4 | <5.12~ | 5.12~ |
| ubuntu/linux-gkeop | <5.4.0-1015.16 | 5.4.0-1015.16 |
| ubuntu/linux-gkeop | <5.12~ | 5.12~ |
| ubuntu/linux-gkeop-5.4 | <5.4.0-1015.16~18.04.1 | 5.4.0-1015.16~18.04.1 |
| ubuntu/linux-gkeop-5.4 | <5.12~ | 5.12~ |
| ubuntu/linux-hwe | <5.12~ | 5.12~ |
| ubuntu/linux-hwe-5.11 | <5.12~ | 5.12~ |
| ubuntu/linux-hwe-5.13 | <5.12~ | 5.12~ |
| ubuntu/linux-hwe-5.4 | <5.4.0-73.82~18.04.1 | 5.4.0-73.82~18.04.1 |
| ubuntu/linux-hwe-5.4 | <5.12~ | 5.12~ |
| ubuntu/linux-hwe-5.8 | <5.8.0-53.60~20.04.1 | 5.8.0-53.60~20.04.1 |
| ubuntu/linux-hwe-5.8 | <5.12~ | 5.12~ |
| ubuntu/linux-hwe-edge | <5.12~ | 5.12~ |
| ubuntu/linux-ibm | <5.12~ | 5.12~ |
| ubuntu/linux-ibm-5.4 | <5.12~ | 5.12~ |
| ubuntu/linux-intel-5.13 | <5.12~ | 5.12~ |
| ubuntu/linux-kvm | <5.4.0-1039.40 | 5.4.0-1039.40 |
| ubuntu/linux-kvm | <5.8.0-1027.29 | 5.8.0-1027.29 |
| ubuntu/linux-kvm | <5.12~ | 5.12~ |
| ubuntu/linux-lowlatency | <5.12~ | 5.12~ |
| ubuntu/linux-lts-trusty | <5.12~ | 5.12~ |
| ubuntu/linux-lts-xenial | <5.12~ | 5.12~ |
| ubuntu/linux-oem | <5.12~ | 5.12~ |
| ubuntu/linux-oem-5.10 | <5.10.0-1021.22 | 5.10.0-1021.22 |
| ubuntu/linux-oem-5.10 | <5.12~ | 5.12~ |
| ubuntu/linux-oem-5.13 | <5.12~ | 5.12~ |
| ubuntu/linux-oem-5.17 | <5.12~ | 5.12~ |
| ubuntu/linux-oem-5.6 | <5.12~ | 5.12~ |
| ubuntu/linux-oem-osp1 | <5.12~ | 5.12~ |
| ubuntu/linux-oracle | <5.4.0-1045.49 | 5.4.0-1045.49 |
| ubuntu/linux-oracle | <5.8.0-1029.30 | 5.8.0-1029.30 |
| ubuntu/linux-oracle | <5.12~ | 5.12~ |
| ubuntu/linux-oracle-5.0 | <5.12~ | 5.12~ |
| ubuntu/linux-oracle-5.11 | <5.12~ | 5.12~ |
| ubuntu/linux-oracle-5.13 | <5.12~ | 5.12~ |
| ubuntu/linux-oracle-5.3 | <5.12~ | 5.12~ |
| ubuntu/linux-oracle-5.4 | <5.4.0-1044.47~18.04.1 | 5.4.0-1044.47~18.04.1 |
| ubuntu/linux-raspi | <5.4.0-1035.38 | 5.4.0-1035.38 |
| ubuntu/linux-raspi | <5.8.0-1024.27 | 5.8.0-1024.27 |
| ubuntu/linux-raspi | <5.12~ | 5.12~ |
| ubuntu/linux-raspi-5.4 | <5.4.0-1035.38~18.04.1 | 5.4.0-1035.38~18.04.1 |
| ubuntu/linux-raspi-5.4 | <5.12~ | 5.12~ |
| ubuntu/linux-raspi2 | <5.12~ | 5.12~ |
| ubuntu/linux-raspi2-5.3 | <5.12~ | 5.12~ |
| ubuntu/linux-riscv | <5.8.0-25.27 | 5.8.0-25.27 |
| ubuntu/linux-riscv | <5.12~ | 5.12~ |
| ubuntu/linux-riscv-5.11 | <5.12~ | 5.12~ |
| ubuntu/linux-riscv-5.8 | <5.8.0-25.27~20.04.1 | 5.8.0-25.27~20.04.1 |
| ubuntu/linux-riscv-5.8 | <5.12~ | 5.12~ |
| ubuntu/linux-snapdragon | <5.12~ | 5.12~ |
| debian/linux | 4.19.249-2 4.19.304-1 5.10.209-2 5.10.216-1 6.1.76-1 6.1.90-1 6.7.12-1 6.8.11-1 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1876995
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HE4CT3NL6OEBRRBUKHIX63GLNVOWCVRW/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SUCBCKRHWP3UD2AVVYQJE7BIJEMCMXW5/
- https://launchpad.net/bugs/cve/CVE-2020-25639
- 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://lists.freedesktop.org/archives/nouveau/2020-August/036682.html
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1881465
- https://access.redhat.com/solutions/41278
- https://security-tracker.debian.org/tracker/CVE-2020-25639
- https://ubuntu.com/security/notices/USN-4911-1
- https://ubuntu.com/security/notices/USN-4945-1
- https://ubuntu.com/security/notices/USN-4949-1
- https://ubuntu.com/security/notices/USN-4945-2
- https://www.cve.org/CVERecord?id=CVE-2020-25639
- https://nvd.nist.gov/vuln/detail/CVE-2020-25639
- https://git.kernel.org/linus/eeaf06ac1a5584e41cf289f8351e446bb131374b
- https://git.kernel.org/linus/eaba3b28401f50e22d64351caa8afe8d29509f27
- https://ubuntu.com/security/CVE-2020-25639
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