CVE-2021-42327

CVSS V2 Medium 4.6 CVSS V3 Medium 6.7
Description
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.
Overview
  • CVE ID
  • CVE-2021-42327
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-10-21T17:15:07
  • Last Modified Date
  • 2021-11-28T23:33:10
Weakness Enumerations
CWE URL
CWE-787 http://cwe.mitre.org/data/definitions/787.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 1 OR 5.14.14
AND
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* 1 OR
AND
cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:P/I:P/A:P
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 4.6
  • Severity
  • MEDIUM
  • Exploitability Score
  • 3.9
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • HIGH
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 6.7
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 0.8
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c Vendor Advisory
https://www.mail-archive.com/amd-gfx@lists.freedesktop.org/msg69080.html Mailing List Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RDDEW4APTYKJK365HC2JZIVXYUV7ZRN7/ Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20211118-0005/ Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-42327
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42327
History
Created Old Value New Value Data Type Notes
2022-05-10 06:44:44 Added to TrackCVE
2022-12-05 13:01:39 2021-10-21T17:15Z 2021-10-21T17:15:07 CVE Published Date updated
2022-12-05 13:01:39 2021-11-28T23:33:10 CVE Modified Date updated
2022-12-05 13:01:39 Analyzed Vulnerability Status updated