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CVE-2026-89993· NVD / CVE Program· CNA Linux

dmaengine: dw-edma: Initialize IRQ data before requesting IRQs

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.20% (FIRST EPSS).
  • Fixed version: Linux Linux 07e50cef557def076418c67051a336e4c6bd50e1, 17ef63843c0fcbf1efdfbbfb0f5584a5ea2c91ba, 647217abea849d3d45f8cb0b8ee5b78d50f26985; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 6.6.157.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 07e50cef557def076418c67051a336e4c6bd50e1, 17ef63843c0fcbf1efdfbbfb0f5584a5ea2c91ba, 647217abea849d3d45f8cb0b8ee5b78d50f26985; azl3 kernel 6.6.152.1-1 on Azure Linux 3.0 6.6.157.1-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: dmaengine: dw-edma: Initialize IRQ data before requesting IRQs dw_edma_irq_request() passes struct dw_edma_irq to request_irq() before dw_edma_channel_setup() fills the back pointer. A shared interrupt can therefore enter the handler with dw_irq->dw still NULL, leading to a NULL pointer dereference. Set the back pointer before installing each handler.

—No exploit Fix available
Published
Sep 16, 2026
Updated
Oct 19, 2026
EPSS
0.2% · 10th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.3affected
    • e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf and later · before b86280b12ccf33b68b309b7cb0e4476894dfe77caffected · git
    • e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf and later · before 07e50cef557def076418c67051a336e4c6bd50e1affected · git
    • e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf and later · before 17ef63843c0fcbf1efdfbbfb0f5584a5ea2c91baaffected · git
    • e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf and later · before d232bc6cf4562132ef50644484dfd4b23a593295affected · git
    • e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf and later · before fac202d73e7a649b7d4010325c6c6dcd9334fe65affected · git
    • e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf and later · before d91fb6c0d10dad32929dc5c6850f89df34e1bfcdaffected · git
    • e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf and later · before 647217abea849d3d45f8cb0b8ee5b78d50f26985affected · git
    • before 5.3not affected · semver
    • 5.15.221 and later · up to and including 5.15.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-89991Sep 16, 2026 · bpf: Fix infinite loop in pcpu_freelist push with one possible CPU
    0Monitor
  • ← EarlierCVE-2026-89992Sep 16, 2026 · cpuidle: dt_idle_genpd: kfree() the original name allocation
    33Monitor
  • Later →CVE-2026-89994Sep 16, 2026 · dmaengine: fsl-edma: tracing: no ptr dereference during log output
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux07e50cef557def076418c67051a336e4c6bd50e1Vendor (CNA)
Linux Linux17ef63843c0fcbf1efdfbbfb0f5584a5ea2c91baVendor (CNA)
Linux Linux647217abea849d3d45f8cb0b8ee5b78d50f26985Vendor (CNA)
Linux Linuxb86280b12ccf33b68b309b7cb0e4476894dfe77cVendor (CNA)
Linux Linuxd232bc6cf4562132ef50644484dfd4b23a593295Vendor (CNA)
Linux Linuxd91fb6c0d10dad32929dc5c6850f89df34e1bfcdVendor (CNA)
Linux Linuxfac202d73e7a649b7d4010325c6c6dcd9334fe65Vendor (CNA)
azl3 kernel 6.6.150.1-1 on Azure Linux 3.0—Microsoft (MSRC)
azl3 kernel 6.6.152.1-1 on Azure Linux 3.06.6.157.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~deb12u1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records