6.7
MEDIUM
CVE-2021-42327
AMD GPU Display Drivers Heap-Based Buffer Overflow
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.

INFO

Published Date :

Oct. 21, 2021, 5:15 p.m.

Last Modified :

March 25, 2024, 1:15 a.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

0.8
Public PoC/Exploit Available at Github

CVE-2021-42327 has a 7 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-42327 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Netapp h410c_firmware
2 Netapp h300s_firmware
3 Netapp h500s_firmware
4 Netapp h700s_firmware
5 Netapp h410s_firmware
6 Netapp h300s
7 Netapp h410s
8 Netapp h500s
9 Netapp h700s
10 Netapp h410c
11 Netapp h300e_firmware
12 Netapp h500e_firmware
13 Netapp h700e_firmware
14 Netapp h300e
15 Netapp h500e
16 Netapp h700e
1 Linux linux_kernel
1 Fedoraproject fedora
: Total Affected Vendor : 3 | Products : 18
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-42327.

URL Resource
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f23750b5b3d98653b31d4469592935ef6364ad67
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://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RDDEW4APTYKJK365HC2JZIVXYUV7ZRN7/
https://security.netapp.com/advisory/ntap-20211118-0005/ Third Party Advisory
https://www.mail-archive.com/amd-gfx%40lists.freedesktop.org/msg69080.html

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
NaInSec/CVE-PoC-in-GitHub

All CVE - PoC in GitHub

poc proofofconcept tester allcve cvegithub cvenew cvepoc cveupdate

Updated: 3 weeks ago
5 stars 2 fork 2 watcher
Born at : March 22, 2024, 3:58 p.m. This repo has been linked 928 different CVEs too.
Profile Photo
zecool/cve

None

Updated: 6 months ago
1 stars 0 fork 0 watcher
Born at : March 11, 2024, 1:21 p.m. This repo has been linked 930 different CVEs too.
Profile Photo
ndk06/linux-kernel-exploitation

None

Updated: 3 weeks ago
6 stars 0 fork 0 watcher
Born at : Feb. 25, 2023, 10:40 a.m. This repo has been linked 178 different CVEs too.
Profile Photo
WhooAmii/POC_to_review

None

Updated: 6 months, 4 weeks ago
2 stars 2 fork 2 watcher
Born at : Nov. 25, 2022, 5:43 p.m. This repo has been linked 930 different CVEs too.
Profile Photo
soosmile/POC

None

Updated: 2 months, 2 weeks ago
8 stars 1 fork 1 watcher
Born at : June 21, 2022, 7:45 a.m. This repo has been linked 943 different CVEs too.
Profile Photo
docfate111/CVE-2021-42327

kernel exploit POC for vulnerability i found in amd gpu driver

Shell Makefile C

Updated: 2 months, 1 week ago
11 stars 4 fork 4 watcher
Born at : Oct. 28, 2021, 9:10 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
xairy/linux-kernel-exploitation

A collection of links related to Linux kernel security and exploitation

linux-kernel kernel-exploitation exploit privilege-escalation security

Updated: 1 week, 1 day ago
5527 stars 902 fork 902 watcher
Born at : Nov. 13, 2016, 10:21 p.m. This repo has been linked 225 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-42327 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-42327 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Mar. 25, 2024

    Action Type Old Value New Value
    Added Reference MITRE https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f23750b5b3d98653b31d4469592935ef6364ad67 [No types assigned]
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference MITRE https://www.mail-archive.com/amd-gfx%40lists.freedesktop.org/msg69080.html [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RDDEW4APTYKJK365HC2JZIVXYUV7ZRN7/ [No types assigned]
    Removed Reference MITRE https://www.mail-archive.com/[email protected]/msg69080.html
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/RDDEW4APTYKJK365HC2JZIVXYUV7ZRN7/
  • Modified Analysis by [email protected]

    Nov. 28, 2021

    Action Type Old Value New Value
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/RDDEW4APTYKJK365HC2JZIVXYUV7ZRN7/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/RDDEW4APTYKJK365HC2JZIVXYUV7ZRN7/ Mailing List, Third Party Advisory
    Changed Reference Type https://security.netapp.com/advisory/ntap-20211118-0005/ No Types Assigned https://security.netapp.com/advisory/ntap-20211118-0005/ Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Nov. 18, 2021

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20211118-0005/ [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 17, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/RDDEW4APTYKJK365HC2JZIVXYUV7ZRN7/ [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 10, 2021

    Action Type Old Value New Value
    Removed Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/RDDEW4APTYKJK365HC2JZIVXYUV7ZRN7/ [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 06, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/RDDEW4APTYKJK365HC2JZIVXYUV7ZRN7/ [No Types Assigned]
  • Reanalysis by [email protected]

    Oct. 28, 2021

    Action Type Old Value New Value
    Removed CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
  • Initial Analysis by [email protected]

    Oct. 26, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c No Types Assigned 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
    Changed Reference Type https://www.mail-archive.com/[email protected]/msg69080.html No Types Assigned https://www.mail-archive.com/[email protected]/msg69080.html Mailing List, Patch, Third Party Advisory
    Added CWE NIST CWE-787
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (including) 5.14.14
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-42327 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-42327 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.05 }} 0.01%

score

0.16605

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: