CVE-2020-25639
published 2021-03-04CVE-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…
PriorityP414medium4.4CVSS 3.1
AVLACLPRHUINSUCNINAH
EPSS
0.37%
29.3th percentile
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
20 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.10.19-1 (bookworm) | linux 5.10.19-1 (bookworm) |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| linux | linux_kernel | <= 5.11.2 | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.19-1 | 5.10.19-1 |
| linux | linux_kernel | >= 0 < 5.10.19-1 | 5.10.19-1 |
| linux | linux_kernel | >= 0 < 5.10.19-1 | 5.10.19-1 |
| linux | linux_kernel | >= 0 < 5.10.19-1 | 5.10.19-1 |
| linux | linux_kernel | >= 0 < 5.4.0-73.82 | 5.4.0-73.82 |
| msrc | cbl2_kernel_5.10.78.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cm1_kernel_5.10.60.1-1_on_cbl_mariner_1.0 | — | — |
| redhat | enterprise_linux | — | — |
| redhat | enterprise_linux | — | — |
| redhat | enterprise_linux | — | — |
| redhat | enterprise_linux | — | — |
| redhat | messaging_realtime_grid | — | — |
| redhat | openshift_container_platform | — | — |
| redhat | openshift_container_platform | — | — |
| redhat | openshift_container_platform | — | — |
CVSS provenance
nvdv3.14.4MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
nvdv2.04.9MEDIUMAV:L/AC:L/Au:N/C:N/I:N/A:C
osv4.4MEDIUM
vendor_debian4.4MEDIUM
vendor_msrc4.4MEDIUM
vendor_redhat4.4MEDIUM
vendor_ubuntu4.4MEDIUM
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GHSA
GHSA-9h9r-mqj8-gh3f: A NULL pointer dereference flaw was found in the Linux kernel’s GPU Nouveau driver functionality in versions prior to 5
ghsa_unreviewed·2022-05-24
CVE-2020-25639 [MEDIUM] CWE-476 GHSA-9h9r-mqj8-gh3f: A NULL pointer dereference flaw was found in the Linux kernel’s GPU Nouveau driver functionality in versions prior to 5
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.
OSV
linux-raspi, linux-raspi-5.4 vulnerabilities
osv·2021-05-19·CVSS 4.4
[MEDIUM] linux-raspi, linux-raspi-5.4 vulnerabilities
linux-raspi, linux-raspi-5.4 vulnerabilities
USN-4945-1 fixed vulnerabilities in the Linux kernel for Ubuntu
20.04 LTS and Ubuntu 18.04 LTS. This update provides the corresponding
Linux kernel updates targeted specifically for Raspberry Pi devices
in those same Ubuntu Releases.
Original advisory details:
It was discovered that the Nouveau GPU driver in the Linux kernel did not
properly handle error conditions in some situations. A local attacker could
use this to cause a denial of service (system crash). (CVE-2020-25639)
Jan Beulich discovered that the Xen netback backend in the Linux kernel did
not properly handle certain error conditions under paravirtualization. An
attacker in a guest VM could possibly use this to cause a denial of service
(host domain crash). (CVE-2021-28038)
It w
OSV
linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-kvm, linux-oracle, linux-oracle-5.
osv·2021-05-11·CVSS 4.4
CVE-2020-25639 [MEDIUM] linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-kvm, linux-oracle, linux-oracle-5.
linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke, linux-gke-5.4, linux-gkeop, linux-gkeop-5.4, linux-hwe-5.4, linux-kvm, linux-oracle, linux-oracle-5.4 vulnerabilities
It was discovered that the Nouveau GPU driver in the Linux kernel did not
properly handle error conditions in some situations. A local attacker could
use this to cause a denial of service (system crash). (CVE-2020-25639)
Jan Beulich discovered that the Xen netback backend in the Linux kernel did
not properly handle certain error conditions under paravirtualization. An
attacker in a guest VM could possibly use this to cause a denial of service
(host domain crash). (CVE-2021-28038)
It was discovered that the fastrpc driver in the Linux kernel did not
prevent user space appli
OSV
linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.8, linux-kvm, linux-oracle, linux-raspi vulnerabilities
osv·2021-05-11·CVSS 4.4
CVE-2021-3489 [MEDIUM] linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.8, linux-kvm, linux-oracle, linux-raspi vulnerabilities
linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.8, linux-kvm, linux-oracle, linux-raspi vulnerabilities
Ryota Shiga discovered that the eBPF implementation in the Linux kernel did
not properly verify that a BPF program only reserved as much memory for a
ring buffer as was allocated. A local attacker could use this to cause a
denial of service (system crash) or execute arbitrary code. (CVE-2021-3489)
Manfred Paul discovered that the eBPF implementation in the Linux kernel
did not properly track bounds on bitwise operations. A local attacker could
use this to cause a denial of service (system crash) or execute arbitrary
code. (CVE-2021-3490)
Billy Jheng Bing-Jhong discovered that the io_uring implementation of the
Linux kernel did not properly enforce the MAX_RW_COUNT limit in some
OSV
linux-oem-5.10 vulnerabilities
osv·2021-04-13·CVSS 4.4
CVE-2020-25639 [MEDIUM] linux-oem-5.10 vulnerabilities
linux-oem-5.10 vulnerabilities
It was discovered that the Nouveau GPU driver in the Linux kernel did not
properly handle error conditions in some situations. A local attacker could
use this to cause a denial of service (system crash). (CVE-2020-25639)
Jan Beulich discovered that the Xen netback backend in the Linux kernel did
not properly handle certain error conditions under paravirtualization. An
attacker in a guest VM could possibly use this to cause a denial of service
(host domain crash). (CVE-2021-28038)
It was discovered that the fastrpc driver in the Linux kernel did not
prevent user space applications from sending kernel RPC messages. A local
attacker could possibly use this to gain elevated privileges.
(CVE-2021-28375)
It was discovered that the fuse user space file system im
OSV
CVE-2020-25639: A NULL pointer dereference flaw was found in the Linux kernel's GPU Nouveau driver functionality in versions prior to 5
osv·2021-03-04·CVSS 4.4
CVE-2020-25639 [MEDIUM] CVE-2020-25639: A NULL pointer dereference flaw was found in the Linux kernel's GPU Nouveau driver functionality in versions prior to 5
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.
Ubuntu
Linux kernel (Raspberry Pi) vulnerabilities
vendor_ubuntu·2021-05-19·CVSS 4.4
CVE-2021-29265 [MEDIUM] Linux kernel (Raspberry Pi) vulnerabilities
Title: Linux kernel (Raspberry Pi) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
USN-4945-1 fixed vulnerabilities in the Linux kernel for Ubuntu
20.04 LTS and Ubuntu 18.04 LTS. This update provides the corresponding
Linux kernel updates targeted specifically for Raspberry Pi devices
in those same Ubuntu Releases.
Original advisory details:
It was discovered that the Nouveau GPU driver in the Linux kernel did not
properly handle error conditions in some situations. A local attacker could
use this to cause a denial of service (system crash). (CVE-2020-25639)
Jan Beulich discovered that the Xen netback backend in the Linux kernel did
not properly handle certain error conditions under paravirtualization. An
attacker in a guest VM could possibly use this
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2021-05-11·CVSS 4.4
CVE-2021-29265 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the Nouveau GPU driver in the Linux kernel did not
properly handle error conditions in some situations. A local attacker could
use this to cause a denial of service (system crash). (CVE-2020-25639)
Jan Beulich discovered that the Xen netback backend in the Linux kernel did
not properly handle certain error conditions under paravirtualization. An
attacker in a guest VM could possibly use this to cause a denial of service
(host domain crash). (CVE-2021-28038)
It was discovered that the fastrpc driver in the Linux kernel did not
prevent user space applications from sending kernel RPC messages. A local
attacker could possibly use this to gain elevated privileges.
(CVE
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2021-05-11·CVSS 4.4
CVE-2021-29265 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Ryota Shiga discovered that the eBPF implementation in the Linux kernel did
not properly verify that a BPF program only reserved as much memory for a
ring buffer as was allocated. A local attacker could use this to cause a
denial of service (system crash) or execute arbitrary code. (CVE-2021-3489)
Manfred Paul discovered that the eBPF implementation in the Linux kernel
did not properly track bounds on bitwise operations. A local attacker could
use this to cause a denial of service (system crash) or execute arbitrary
code. (CVE-2021-3490)
Billy Jheng Bing-Jhong discovered that the io_uring implementation of the
Linux kernel did not properly enforce the MAX_RW_COUNT limit in some
situatio
Ubuntu
Linux kernel (OEM) vulnerabilities
vendor_ubuntu·2021-04-13·CVSS 4.4
CVE-2021-28950 [MEDIUM] Linux kernel (OEM) vulnerabilities
Title: Linux kernel (OEM) vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the Nouveau GPU driver in the Linux kernel did not
properly handle error conditions in some situations. A local attacker could
use this to cause a denial of service (system crash). (CVE-2020-25639)
Jan Beulich discovered that the Xen netback backend in the Linux kernel did
not properly handle certain error conditions under paravirtualization. An
attacker in a guest VM could possibly use this to cause a denial of service
(host domain crash). (CVE-2021-28038)
It was discovered that the fastrpc driver in the Linux kernel did not
prevent user space applications from sending kernel RPC messages. A local
attacker could possibly use this to gain elevated privileges
Microsoft
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 fla
vendor_msrc·2021-03-09·CVSS 4.4
CVE-2020-25639 [MEDIUM] CWE-476 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 fla
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.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional
Red Hat
kernel: NULL pointer dereference via nouveau ioctl can lead to DoS
vendor_redhat·2020-08-28·CVSS 4.4
CVE-2020-25639 [MEDIUM] CWE-476 kernel: NULL pointer dereference via nouveau ioctl can lead to DoS
kernel: NULL pointer dereference via nouveau ioctl can lead to DoS
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.
A NULL pointer dereference flaw was found in the Linux kernel’s GPU Nouveau driver functionality in the way the user calls ioctl DRM_IOCTL_NOUVEAU_CHANNEL_ALLOC. This flaw allows a local user to crash the system.
Statement: This flaw is rated as having a Low impact because the issue can only be triggered by an authorized local user in the render group.
Mitigation: To mitigate this issue, prevent the module nouveau from being loaded. Please see https://access.redhat.com/solutions/41
Debian
CVE-2020-25639: linux - A NULL pointer dereference flaw was found in the Linux kernel's GPU Nouveau driv...
vendor_debian·2020·CVSS 4.4
CVE-2020-25639 [MEDIUM] CVE-2020-25639: linux - 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.
Scope: local
bookworm: resolved (fixed in 5.10.19-1)
bullseye: resolved (fixed in 5.10.19-1)
forky: resolved (fixed in 5.10.19-1)
sid: resolved (fixed in 5.10.19-1)
trixie: resolved (fixed in 5.10.19-1)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2020-25639 kernel: NULL pointer dereference via nouveau ioctl can lead to DoS [fedora-all]
bugzilla·2020-09-22·CVSS 4.4
CVE-2020-25639 [MEDIUM] CVE-2020-25639 kernel: NULL pointer dereference via nouveau ioctl can lead to DoS [fedora-all]
CVE-2020-25639 kernel: NULL pointer dereference via nouveau ioctl can lead to DoS [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple s
Bugzilla
CVE-2020-25639 kernel: NULL pointer dereference via nouveau ioctl can lead to DoS
bugzilla·2020-09-08·CVSS 4.4
CVE-2020-25639 [MEDIUM] CVE-2020-25639 kernel: NULL pointer dereference via nouveau ioctl can lead to DoS
CVE-2020-25639 kernel: NULL pointer dereference via nouveau ioctl can lead to DoS
A flaw was found in the Linux kernel where an unprivileged console user can crash kernel via a nouveau ioctl.
Reference:
https://lists.freedesktop.org/archives/nouveau/2020-August/036682.html
Discussion:
Acknowledgments:
Name: Frantisek Hrbata (Red Hat)
---
Created kernel tracking bugs for this issue:
Affects: fedora-all [bug 1881465]
---
Statement:
This flaw is rated as having a Low impact because the issue can only be triggered by an authorized local user in the render group.
---
Mitigation:
To mitigate this issue, prevent the module nouveau from being loaded. Please see https://access.redhat.com/solutions/41278 for information on how to blacklist a kernel module to prevent it from loading aut
https://bugzilla.redhat.com/show_bug.cgi?id=1876995https://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=1876995https://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/
2021-03-04
Published