Evidence dossier

CVE-2023-26083

Memory leak vulnerability in Mali GPU Kernel Driver in Midgard GPU Kernel Driver all versions from r6p0 - r32p0, Bifrost GPU Kernel Driver all versions from r0p0 - r42p0,…

Exploited in the wild (CISA KEV since Apr 7, 2023). NVD reports CVSS 3.1 3.3. EPSS estimates 1.3% exploit likelihood as of Aug 27, 2026.

55.1–56.2Priority evidence range

Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

Memory leak vulnerability in Mali GPU Kernel Driver in Midgard GPU Kernel Driver all versions from r6p0 - r32p0, Bifrost GPU Kernel Driver all versions from r0p0 - r42p0, Valhall GPU Kernel Driver all versions from r19p0 - r42p0, and Avalon GPU Kernel Driver all versions from r41p0 - r42p0 allows a non-privileged user to make valid GPU processing operations that expose sensitive kernel metadata.

State: PUBLISHED
Published: Apr 6, 2023
Updated: Oct 21, 2025
Evidence coverage: 97%

Evidence chronology

What was known when

Download this view's receipt →

Source dateSource date omittedFirst observed by CASCAJul 19, 2026
CISA-ADP
Record text: CISA ADP Vulnrichment
Inspect raw assertion
Field
container
Value
CISA ADP Vulnrichment
Original evidence ↗
Source dateSource date omittedFirst observed by CASCAJul 19, 2026
CVE Program
Record text: CVE Program Container
Inspect raw assertion
Field
container
Value
CVE Program Container
Original evidence ↗
Source dateSource date omittedFirst observed by CASCAJul 19, 2026
mitre
Record text: Memory leak vulnerability in Mali GPU Kernel Driver in Midgard GPU Kernel Driver all versions from r6p0 - r32p0, Bifrost GPU Kernel Driver all versions from r0p0 - r42p0, Valhall GPU Kernel Driver all versions from r19p0 - r42p0, and Avalon GPU Kernel Driver all versions from r41p0 - r42p0 allows a non-privileged user to make valid GPU processing operations that expose sensitive kernel metadata.
Inspect raw assertion
Field
container
Value
Memory leak vulnerability in Mali GPU Kernel Driver in Midgard GPU Kernel Driver all versions from r6p0 - r32p0, Bifrost GPU Kernel Driver all versions from r0p0 - r42p0, Valhall GPU Kernel Driver all versions from r19p0 - r42p0, and Avalon GPU Kernel Driver all versions from r41p0 - r42p0 allows a non-privileged user to make valid GPU processing operations that expose sensitive kernel metadata.
Original evidence ↗
Source dateJul 16, 2026First observed by CASCAJul 19, 2026
CISA KEV
Exploitation cataloged: Arm Mali GPU Kernel Driver Information Disclosure Vulnerability
Inspect raw assertion
Field
observed_exploitation
Value
Arm Mali GPU Kernel Driver Information Disclosure Vulnerability
Original evidence ↗
Source dateAug 27, 2026First observed by CASCAAug 27, 2026
FIRST EPSS
EPSS score: 1.26% probability · 67.33th percentile
Inspect raw assertion
Field
model_probability
Value
Probability 0.012550000000; percentile 0.673260000000
Original evidence ↗

ExploitationCatalog member

CISA KEV · catalog date Apr 7, 2023 · first observed Jul 19, 2026

Exploit likelihood1.26%

FIRST EPSS · score date Aug 27, 2026 · 67.3th percentile · first observed Aug 27, 2026

SeverityCVSS 3.3

NVD · CVSS 3.1 · first observed Jul 19, 2026 · same-version scores align in this snapshot

Evidence detail

Source limits and decisions

Why each evidence state has this value

casca-unknown-reasons-v1

Exploitation statusEvidence supported

Eligible evidence is present for this bounded claim.

Revision: evidence-policy-v1.1.0
Cutoff: Aug 27, 2026
Resolution: None

Exploit likelihoodEvidence supported

Eligible evidence is present for this bounded claim.

Revision: evidence-policy-v1.1.0
Cutoff: Aug 27, 2026
Resolution: None

Severity assessmentEvidence supported

Eligible evidence is present for this bounded claim.

Revision: casca-direct-cvss-eligibility-v1
Cutoff: Aug 27, 2026
Resolution: None

Affected productsSource-reported scope

The cited source assertion is retained while canonical product linkage remains open.

Revision: casca-factor-d-obligations-v1
Cutoff: Aug 27, 2026
Resolution: Resolve identity

Source comparison

Who said what

CISA-ADPIndependent enrichment

Record text

CISA ADP Vulnrichment

Inspect raw assertion

Field: container
Value: CISA ADP Vulnrichment

Source dateSource date omittedFirst observed by CASCAJul 19, 2026Original evidence ↗

CVE ProgramDerivative copy

Record text

CVE Program Container

Inspect raw assertion

Field: container
Value: CVE Program Container

Source dateSource date omittedFirst observed by CASCAJul 19, 2026Original evidence ↗

mitreOriginal assertion

Record text

Inspect raw assertion

Field: container
Value: Memory leak vulnerability in Mali GPU Kernel Driver in Midgard GPU Kernel Driver all versions from r6p0 - r32p0, Bifrost GPU Kernel Driver all versions from r0p0 - r42p0, Valhall GPU Kernel Driver all versions from r19p0 - r42p0, and Avalon GPU Kernel Driver all versions from r41p0 - r42p0 allows a non-privileged user to make valid GPU processing operations that expose sensitive kernel metadata.

Source dateSource date omittedFirst observed by CASCAJul 19, 2026Original evidence ↗

CISA KEVOriginal assertion

Exploitation cataloged

Arm Mali GPU Kernel Driver Information Disclosure Vulnerability

Inspect raw assertion

Field: observed_exploitation
Value: Arm Mali GPU Kernel Driver Information Disclosure Vulnerability

Source dateJul 16, 2026First observed by CASCAJul 19, 2026Original evidence ↗

FIRST EPSSOriginal assertion

EPSS score

1.26% probability · 67.33th percentile

Inspect raw assertion

Field: model_probability
Value: Probability 0.012550000000; percentile 0.673260000000

Source dateAug 27, 2026First observed by CASCAAug 27, 2026Original evidence ↗

Applicability

Cited product scope

Trace impact →

4Underlying assertions

4Canonical products

4Target assertions

0Constraint assertions

Grouped from 1 configuration nodes in this exact snapshot. Visual grouping is navigational; asset exposure and root cause require cited evidence.

Identity source boundaries

Cpe dictionary1,775,266 records · observed through 2026-07-21T06:45:29.809Z27d65b0f-b718-4b4f-bb79-c47c68d09dfa
Cpe match643,502 records · observed through 2026-07-21T08:13:17.697Z955dae73-7302-438b-aee1-058d7cc5d48e

Search scopeRoleOfficial link state

5 scope groups

mitre · source assertedn/an/aDirect source scope

Affected: n/a

Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion

[{"status": "affected", "version": "n/a"}]

NVD CPE · APPLICATIONarm5th_gen_gpu_architecture_kernel_driverVulnerable target · 1 assertions

Any version (unconstrained) (>= r41p0, < r43p0)Canonical identity product-c128060e60876fb82068e11363a44c4ca1bf9817f5bc87aff991c2ea1fcbc5f0Linked exact

Scope supported

Inspect raw assertion

cpe:2.3:a:arm:5th_gen_gpu_architecture_kernel_driver:*:*:*:*:*:*:*:*
Official link
Linked exact
Role
Vulnerable target
Configuration
0 · node/0 · match 0
Logic
OR
Version bounds
from including r41p0; through excluding r43p0
Match ID
574a1e71-2b1e-48d4-aa93-974b4e34c64f

NVD CPE · APPLICATIONarmbifrost_gpu_kernel_driverVulnerable target · 1 assertions

Any version (unconstrained) (>= r0p0, < r43p0)Canonical identity product-c63fa75a9e27e1bee83e7604c11191e006298c73db47bfbbaed00a84325fa08cLinked exact

Scope supported

Inspect raw assertion

cpe:2.3:a:arm:bifrost_gpu_kernel_driver:*:*:*:*:*:*:*:*
Official link
Linked exact
Role
Vulnerable target
Configuration
0 · node/0 · match 1
Logic
OR
Version bounds
from including r0p0; through excluding r43p0
Match ID
c7205027-9ae7-4095-b0a7-b1eca71accae

NVD CPE · APPLICATIONarmmidgard_gpu_kernel_driverVulnerable target · 1 assertions

Any version (unconstrained) (>= r6p0, <= r32p0)Canonical identity product-13f91c58c8d4c31b0a8c7756d5499ca52ade104a22b726ed83efe44576504de1Linked exact

Scope supported

Inspect raw assertion

cpe:2.3:a:arm:midgard_gpu_kernel_driver:*:*:*:*:*:*:*:*
Official link
Linked exact
Role
Vulnerable target
Configuration
0 · node/0 · match 2
Logic
OR
Version bounds
from including r6p0; through including r32p0
Match ID
aba04388-28fc-4f87-85f4-b7fd0b553611

NVD CPE · APPLICATIONarmvalhall_gpu_kernel_driverVulnerable target · 1 assertions

Any version (unconstrained) (>= r19p0, < r43p0)Canonical identity product-120d84144cb42acc8250575334ad30852731907e7447e24ff638755e7a0710f7Linked exact

Scope supported

Inspect raw assertion

cpe:2.3:a:arm:valhall_gpu_kernel_driver:*:*:*:*:*:*:*:*
Official link
Linked exact
Role
Vulnerable target
Configuration
0 · node/0 · match 3
Logic
OR
Version bounds
from including r19p0; through excluding r43p0
Match ID
38bf4620-6a5c-4034-8d17-bc1ac5f8c711

Affected-product evidence

Accepted scope and product mapping

4 canonical links · 1 source-reported links

Mapping establishedEvidence supported

vendor-bff30a686dc6ea9189a7118a970d1059f93afc9c5381a3185721afbe29022cdd · product-120d84144cb42acc8250575334ad30852731907e7447e24ff638755e7a0710f7

Source class: Nvd cpe vulnerable target
Assertions: 1
Mapping revision: cpe23-exact-mapping-v1
Observed cutoff: Aug 27, 2026

Retained assertion IDs

0568429b-47db-4564-8420-7d81894b1140

Mapping establishedEvidence supported

vendor-bff30a686dc6ea9189a7118a970d1059f93afc9c5381a3185721afbe29022cdd · product-13f91c58c8d4c31b0a8c7756d5499ca52ade104a22b726ed83efe44576504de1

Source class: Nvd cpe vulnerable target
Assertions: 1
Mapping revision: cpe23-exact-mapping-v1
Observed cutoff: Aug 27, 2026

Retained assertion IDs

9b98273f-588b-4ea2-838b-8839892fc9ea

Mapping establishedEvidence supported

vendor-bff30a686dc6ea9189a7118a970d1059f93afc9c5381a3185721afbe29022cdd · product-c128060e60876fb82068e11363a44c4ca1bf9817f5bc87aff991c2ea1fcbc5f0

Source class: Nvd cpe vulnerable target
Assertions: 1
Mapping revision: cpe23-exact-mapping-v1
Observed cutoff: Aug 27, 2026

Retained assertion IDs

a180a326-9ac4-40b7-9b23-d7656f96b7e2

Mapping establishedEvidence supported

vendor-bff30a686dc6ea9189a7118a970d1059f93afc9c5381a3185721afbe29022cdd · product-c63fa75a9e27e1bee83e7604c11191e006298c73db47bfbbaed00a84325fa08c

Source class: Nvd cpe vulnerable target
Assertions: 1
Mapping revision: cpe23-exact-mapping-v1
Observed cutoff: Aug 27, 2026

Retained assertion IDs

3fd1c56f-a9b6-4cbb-b5c3-bea56a1170f6

Source-reported scopeSource-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Vendor specified only by source · Product specified only by source

Source class: Direct cve affected
Assertions: 1
Mapping revision: cpe23-exact-mapping-v1
Observed cutoff: Aug 27, 2026

Retained assertion IDs

3574e4f9-9de6-4875-afed-87a172d35f33

Assessments

CVSS by origin

3.3

NVDCVSS 3.1 · role Primary · priority eligiblevalid_matchCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

3.3

CVE Program sourceCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

3.3

CISA-ADPCVSS 3.1 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Direct CVE/CNA normalized decisions

3.3Priority eligible

CISA-ADP

CVSS 3.1 · Secondary · Independent enrichment · rank 2

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

Validation: Valid match
Recomputed: 3.3
Decision reason: Evidence supported
Policy: casca-direct-cvss-eligibility-v1

Assessments are retained side by side under closed precedence. Cascade never averages CVSS.

Evidence boundaries

KEV membership is authoritative for the catalog, not proof of exposure in any environment.
EPSS is a dated model probability and not an individual-environment prediction.
Affected or fixed status applies only to the exact cited product and version scope; remaining scope stays source-scoped.
NVD-carried upstream facts remain derivative; independent corroboration requires a separately authored source.
Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.
OSV aggregation and OSV-converted NVD material are not independent corroboration.
Red Hat facts are vendor assertions for the exact supplied products.
Nonmembership and not-yet-observed states are not proof of safety.