CVE-2021-42327

Published on: 10/21/2021 12:00:00 AM UTC

Last Modified on: 11/28/2021 11:33:00 PM UTC

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

Certain versions of Fedora from Fedoraproject contain the following vulnerability:

dp_link_settings_write in drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c in the Linux kernel through 5.14.14 allows a heap-based buffer overflow by an attacker who can write a string to the AMD GPU display drivers debug filesystem. There are no checks on size within parse_write_buffer_into_params when it uses the size of copy_from_user to copy a userspace buffer into a 40-byte heap buffer.

  • CVE-2021-42327 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as MEDIUM severity.

CVSS3 Score: 6.7 - MEDIUM

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
LOCAL LOW HIGH NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED HIGH HIGH HIGH

CVSS2 Score: 4.6 - MEDIUM

Access
Vector
Access
Complexity
Authentication
LOCAL LOW NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
PARTIAL PARTIAL PARTIAL

CVE References

Description Tags Link
[SECURITY] Fedora 35 Update: kernel-5.14.16-301.fc35 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo FEDORA FEDORA-2021-a093973910
CVE-2021-42327 Linux Kernel Vulnerability in NetApp Products | NetApp Product Security security.netapp.com
text/html
URL Logo CONFIRM security.netapp.com/advisory/ntap-20211118-0005/
Re: [PATCH] drm/amdgpu: fix out of bounds write www.mail-archive.com
text/html
URL Logo MISC www.mail-archive.com/[email protected]/msg69080.html
kernel/git/torvalds/linux.git - Linux kernel source tree git.kernel.org
text/html
URL Logo MISC git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c

Related QID Numbers

  • 198589 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-5165-1)
  • 282164 Fedora Security Update for kernel (FEDORA-2021-a093973910)
  • 900424 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (6102)

Exploit/POC from Github

kernel exploit for minor bug i found in amd gpu driver

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
Operating
System
FedoraprojectFedora35AllAllAll
Operating
System
LinuxLinux KernelAllAllAllAll
HardwareNetappH300e-AllAllAll
Operating
System
NetappH300e Firmware-AllAllAll
HardwareNetappH300s-AllAllAll
Operating
System
NetappH300s Firmware-AllAllAll
HardwareNetappH410c-AllAllAll
Operating
System
NetappH410c Firmware-AllAllAll
HardwareNetappH410s-AllAllAll
Operating
System
NetappH410s Firmware-AllAllAll
HardwareNetappH500e-AllAllAll
Operating
System
NetappH500e Firmware-AllAllAll
HardwareNetappH500s-AllAllAll
Operating
System
NetappH500s Firmware-AllAllAll
HardwareNetappH700e-AllAllAll
Operating
System
NetappH700e Firmware-AllAllAll
HardwareNetappH700s-AllAllAll
Operating
System
NetappH700s Firmware-AllAllAll
  • cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*:
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*:
  • cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2021-42327 : dp_link_settings_write in drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c in the #Linux… twitter.com/i/web/status/1… 2021-10-21 17:06:48
Reddit Logo Icon /r/linkersec SLUB overflow CVE-2021-42327 2021-11-16 14:28:59
© CVE.report 2022 Twitter Nitter Twitter Viewer |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

CVE.report and Source URL Uptime Status status.cve.report