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ubuntucveUbuntu.comUB:CVE-2020-25639
HistoryMar 04, 2021 - 12:00 a.m.

CVE-2020-25639

2021-03-0400:00:00
ubuntu.com
ubuntu.com
22
cve-2020-25639
linux
gpu
nouveau
null pointer dereference
ioctl
drm_ioctl_nouveau_channel_alloc
system crash

CVSS2

4.9

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:N/I:N/A:C

CVSS3

4.4

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0

Percentile

5.1%

JSON

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.

Notes

Author Note
sbeattie reproducer in freedesktop report no upstream progress as of 2020/11/24
OSVersionArchitecturePackageVersionFilename
ubuntu20.04noarchlinux-riscv-5.8< 5.8.0-25.27~20.04.1UNKNOWN
ubuntu20.04noarchlinux-bluefield< 5.4.0-1011.14UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-73.82UNKNOWN
ubuntu20.10noarchlinux< 5.8.0-53.60UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1048.50UNKNOWN
ubuntu20.10noarchlinux-aws< 5.8.0-1033.35UNKNOWN
ubuntu18.04noarchlinux-aws-5.4< 5.4.0-1048.50~18.04.1UNKNOWN
ubuntu20.04noarchlinux-azure< 5.4.0-1047.49UNKNOWN
ubuntu20.10noarchlinux-azure< 5.8.0-1032.34UNKNOWN
ubuntu20.04noarchlinux-gke< 5.4.0-1043.45UNKNOWN
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1-10 of 301

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CVSS2

4.9

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:N/I:N/A:C

CVSS3

4.4

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0

Percentile

5.1%

JSON
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