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NVD / CVE Program· CNA Linux

CVE-2026-80679: s390/dasd: Fix potential NULL pointer dereference

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: 0.17% (FIRST EPSS).
  • Fixed version: Linux Linux 3000367a512b1283ca52230bf21f8c91dfbec45b, 3453a993a3f14c1684560ecf26585046976f6ac6, 86cdfd061509bcde84f3145f7221ba64e3e53b1f; azl3 kernel 6.6.150.1-1 on Azure Linux 3.0 6.6.152.1-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 3000367a512b1283ca52230bf21f8c91dfbec45b, 3453a993a3f14c1684560ecf26585046976f6ac6, 86cdfd061509bcde84f3145f7221ba64e3e53b1f; azl3 kernel 6.6.150.1-1 on Azure Linux 3.0 6.6.152.1-1 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: s390/dasd: Fix potential NULL pointer dereference dasd_release_space() checks the implementation of the is_ese() discipline function before calling it to determine if a given device is an ESE DASD. The current usage of the logical AND operator will lead to a NULL pointer dereference as the function is called even if the function pointer is NULL. Fix this by using the logical OR operator.

—No exploit Fix available
Published
Aug 28, 2026
Updated
Aug 28, 2026
EPSS
0.1% · 7th 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 · 0.1%

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

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When you'll hear from us

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  • when exploit code appears or is weaponized
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  • 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
    • 91dc4a197569230683ca8bad551e655a4bf14c30 and later · before dbf2ae34d2f1390a9fc1abf3dce7f809e022caaeaffected · git
    • 91dc4a197569230683ca8bad551e655a4bf14c30 and later · before 3000367a512b1283ca52230bf21f8c91dfbec45baffected · git
    • 91dc4a197569230683ca8bad551e655a4bf14c30 and later · before cdc7b73d0c5a9cd6360b4f8c36eae23b02097e4caffected · git
    • 91dc4a197569230683ca8bad551e655a4bf14c30 and later · before e156c70c505c6c9adce3b7be5a82025f00544709affected · git
    • 91dc4a197569230683ca8bad551e655a4bf14c30 and later · before 3453a993a3f14c1684560ecf26585046976f6ac6affected · git
    • 91dc4a197569230683ca8bad551e655a4bf14c30 and later · before 86cdfd061509bcde84f3145f7221ba64e3e53b1faffected · git
    • 91dc4a197569230683ca8bad551e655a4bf14c30 and later · before 96b8e09b09539f252a5eeea6baebd93c2e3779bdaffected · git
    • 91dc4a197569230683ca8bad551e655a4bf14c30 and later · before 9973026f572db6b67570cadc30942f3014e41079affected · git
    • before 5.3not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.187-16.1.187-1
Debian:12linux-6.12before 6.12.107-1~deb12u16.12.107-1~deb12u1
Debian:13linuxbefore 6.12.105-16.12.105-1
Debian:14linuxbefore 7.1.8-17.1.8-1

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-2026-80674Aug 28, 2026 · ntfs: validate resident attribute lists and harden the validator
    39Monitor
  • ← EarlierCVE-2026-80675Aug 28, 2026 · libbpf: Reject non-exclusive metadata maps in the signed loader
    28Monitor
  • Later →CVE-2026-80680Aug 28, 2026 · i2c: amd-mp2: Unregister callback on adapter add failure
    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 Linux3000367a512b1283ca52230bf21f8c91dfbec45bVendor (CNA)
Linux Linux3453a993a3f14c1684560ecf26585046976f6ac6Vendor (CNA)
Linux Linux86cdfd061509bcde84f3145f7221ba64e3e53b1fVendor (CNA)
Linux Linux96b8e09b09539f252a5eeea6baebd93c2e3779bdVendor (CNA)
Linux Linux9973026f572db6b67570cadc30942f3014e41079Vendor (CNA)
Linux Linuxcdc7b73d0c5a9cd6360b4f8c36eae23b02097e4cVendor (CNA)
Linux Linuxdbf2ae34d2f1390a9fc1abf3dce7f809e022caaeVendor (CNA)
Linux Linuxe156c70c505c6c9adce3b7be5a82025f00544709Vendor (CNA)
azl3 kernel 6.6.150.1-1 on Azure Linux 3.06.6.152.1-1 · Release NotesMicrosoft (MSRC)
debian:linux6.1.187-1 · Debian:12Package registry (OSV)
debian:linux-6.126.12.107-1~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✗ → ✓

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References

Show all references (7 more)

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

All records