CVE-2021-29256

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.030 · 87 %ileDEEUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV

Likely / severe?

2.99% (87th) EPSS

CVSS 9 · high

Is it mine?

11 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · osv · cert_bund

added 2023-07-07remediate by 2023-07-28

required action Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.

EPSS · scored 2026-10-27

Arm Mali GPU Kernel Driver Use-After-Free Vulnerability

. The Arm Mali GPU kernel driver allows an unprivileged user to achieve access to freed memory, leading to information disclosure or root privilege escalation. This affects Bifrost r16p0 through r29p0 before r30p0, Valhall r19p0 through r29p0 before r30p0, and Midgard r28p0 through r30p0.

cvss

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

9.0

010

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

v2.09highAV:N/AC:L/Au:S/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8 · impact 10

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 2.8 · impact 5.9

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-416USprimary

ATT&CK techniques

ATT&CK techniques this enables or maps to.

affected products (11)

Products and version ranges known to be affected.

Google Android 11all versionscert_bundDEcpe:/o:google:android:11
Google Android 12all versionscert_bundDEcpe:/o:google:android:12
Google Android 12Lall versionscert_bundDEcpe:/o:google:android:12l
Google Android 13all versionscert_bundDEcpe:/o:google:android:13
Samsung Androidall versionscert_bundDEcpe:/o:samsung:android:-
Samsung Android 13all versionscert_bundDEcpe:/o:samsung:android:13
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
n/a n/a≤ n/aenisa_euvdEU
arm bifrost gpu kernel driverr16p0 → r30p0nvdUScpe:2.3:a:arm:bifrost_gpu_kernel_driver:*:*:*:*:*:*:*:*
arm midgard gpu kernel driverr28p0 → r31p0nvdUScpe:2.3:a:arm:midgard_gpu_kernel_driver:*:*:*:*:*:*:*:*
arm valhall gpu kernel driverr19p0 → r30p0nvdUScpe:2.3:a:arm:valhall_gpu_kernel_driver:*:*:*:*:*:*:*:*

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-1669Android Patchday Juli 2023Deutsch2023-07-05csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Google Android ausnutzen, um beliebigen Programmcode mit Administratorrechten auszuführen, seine Privilegien zu erweitern, Informationen offenzulegen oder einen Denial of Service Zustand herbeizuführen.
WID-SEC-W-2023-1981Samsung Android: Mehrere SchwachstellenDeutsch2023-08-07csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Samsung Android ausnutzen, um seine Privilegien zu erhöhen.
ASB-A-2834894602023-07-01vendor · osvUS

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv cert_bund nvd NVD CVE.org MITRE

published 2021-05-24modified 2026-06-17

related (12,235)

Related entries.

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+12230 more

references (5)

External citations — patches, advisories, analysis.

scry

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