CVE-2026-89994Public exploit

Kernel crash via stale fsl-edma trace pointer

Published Sep 16, 2026 · Updated Sep 16, 2026

Use-after-free in Linux 6.10 allows local users with tracing access to crash the kernel by reading an injected fsl-edma event. The fsl-edma trace record stores a struct fsl_edma_engine pointer, then TP_printk dereferences edma->membase after the object can be freed. Administrative tracefs access and an enabled fsl-edma tracepoint are required; exploitation interrupts the host by crashing the kernel.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Use-after-free in Linux 6.10 allows local users with tracing access to crash the kernel by reading an injected fsl-edma event. The fsl-edma trace record stores a struct fsl_edma_engine pointer, then TP_printk dereferences edma->membase after the object can be freed. Administrative tracefs access and an enabled fsl-edma tracepoint are required; exploitation interrupts the host by crashing the kernel.

The record

CVE
CVE-2026-89994
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=11102d0c343ba06ddd303f2503c0ce46d70052f2 <2a3801ae5c344473e648006c5b03a9216ac54a6a
  2. Affected versionversion=11102d0c343ba06ddd303f2503c0ce46d70052f2 <2ea04dca8e627f722caa7a2037cfbae0257f3501
  3. Affected versionversion=11102d0c343ba06ddd303f2503c0ce46d70052f2 <d382aaf5fed38c6dd2e0cc710d97cb81d660ffa7
  4. Affected versionversion=11102d0c343ba06ddd303f2503c0ce46d70052f2 <ef02cd3807f39ae1dbc924788d8fa6a85334c435
  5. Affected versionversion=6.10

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=11102d0c343ba06ddd303f2503c0ce46d70052f2 <2a3801ae5c344473e648006c5b03a9216ac54a6a; version=11102d0c343ba06ddd303f2503c0ce46d70052f2 <2ea04dca8e627f722caa7a2037cfbae0257f3501; version=11102d0c343ba06ddd303f2503c0ce46d70052f2 <d382aaf5fed38c6dd2e0cc710d97cb81d660ffa7; version=11102d0c343ba06ddd303f2503c0ce46d70052f2 <ef02cd3807f39ae1dbc924788d8fa6a85334c435; version=6.10

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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