CVE-2021-42327

mediumpriority · track · 37EPSS 0.009 · 59 %ileexploit · PoCDEEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

0.87% (59th) EPSS

CVSS 4.6 · medium

Is it mine?

15 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

6.7

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04.6mediumAV:L/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 3.9 · impact 6.4

v3.16.7mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 0.8 · impact 5.9

v3.16.3mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:Psecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimary

exploits (1)

Public proof-of-concept and weaponised exploit code.

docfate111/CVE-2021-42327 kernel exploit POC for vulnerability i found in amd gpu driverPoC · poc_in_github

affected products (15)

Products and version ranges known to be affected.

Open Source Linux Kernel <=5.14.14all versionscert_bundDE
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
Open Source Linux Kernel≤ 5.14.14cert_bundDE
n/a n/a≤ n/aenisa_euvdEU
fedoraproject fedora= 35nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
linux linux kernel≤ 5.14.14nvdUScpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
netapp h300e firmwareall versionsnvdUScpe:2.3:o:netapp:h300e_firmware:*:*:*:*:*:*:*:*
netapp h300s firmwareall versionsnvdUScpe:2.3:o:netapp:h300s_firmware:*:*:*:*:*:*:*:*
netapp h410c firmwareall versionsnvdUScpe:2.3:o:netapp:h410c_firmware:*:*:*:*:*:*:*:*
netapp h410s firmwareall versionsnvdUScpe:2.3:o:netapp:h410s_firmware:*:*:*:*:*:*:*:*
netapp h500e firmwareall versionsnvdUScpe:2.3:o:netapp:h500e_firmware:*:*:*:*:*:*:*:*
netapp h500s firmwareall versionsnvdUScpe:2.3:o:netapp:h500s_firmware:*:*:*:*:*:*:*:*
netapp h700e firmwareall versionsnvdUScpe:2.3:o:netapp:h700e_firmware:*:*:*:*:*:*:*:*
netapp h700s firmwareall versionsnvdUScpe:2.3:o:netapp:h700s_firmware:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2024-1372Linux Kernel: Schwachstelle ermöglicht nicht spezifizierten AngriffDeutsch2021-10-24csaf · cert_bundDE
Ein lokaler Angreifer kann eine Schwachstelle im Linux Kernel ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd NVD CVE.org MITRE

published 2021-10-21modified 2026-06-17

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Related entries.

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+16123 more

references (22)

External citations — patches, advisories, analysis.

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