dmaengine: fsl-edma: tracing: no ptr dereference during log output (CVE-2026-89994) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-89994

dmaengine: fsl-edma: tracing: no ptr dereference during log output

Answer in brief

CVE-2026-89994 records a Unknown severity vulnerability in dmaengine: fsl-edma: tracing: no ptr dereference during log output. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 16, 2026Updated Sep 16, 2026Source checked Sep 16, 2026First seen by HOL Sep 16, 2026Material review Sep 16, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=11102d0c343ba06ddd303f2503c0ce46d70052f2 <ef02cd3807f39ae1dbc924788d8fa6a85334c435 \|\| >=11102d0c343ba06ddd303f2503c0ce46d70052f2 <d382aaf5fed38c6dd2e0cc710d97cb81d660ffa7 \|\| >=11102d0c343ba06ddd303f2503c0ce46d70052f2 <2a3801ae5c344473e648006c5b03a9216ac54a6a \|\| >=11102d0c343ba06ddd303f2503c0ce46d70052f2 <2ea04dca8e627f722caa7a2037cfbae0257f3501	ef02cd3807f39ae1dbc924788d8fa6a85334c435, d382aaf5fed38c6dd2e0cc710d97cb81d660ffa7, 2a3801ae5c344473e648006c5b03a9216ac54a6a, 2ea04dca8e627f722caa7a2037cfbae0257f3501
Linux/Linuxgeneric	6.10	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to ef02cd3807f39ae1dbc924788d8fa6a85334c435 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 16, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: dmaengine: fsl-edma: tracing: no ptr dereference during log output The fsl edma events store a pointer to a struct fsl_edma_engine in the ringbuffer and dereference it when a log entry is printed. At this time, the pointer may no longer be valid. Event injection can be used to trigger a crash: $ cd /sys/kernel/tracing $ echo 'value = 0' > events/fsl_edma/edma_writeb/inject $ cat trace The log output needs only edma->membase. Add a membase field at the end of the event and use the new field for log output. Keep the existing fields for backward compatibility.

Quoted source text, attributed separately from HOL analysis.