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NVD / CVE Program· CNA Linux

CVE-2026-89575: dm raid1: reserve space for NUL-terminator in build_constructor_string()

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: 0.23% (FIRST EPSS).
  • Fixed version: Linux Linux 01a0276706c7b6fb758a8e2ff9cf221a3dfcae97, 0a3657ebd6b517b60cdc5123894047616974e25b, 1fcc9f9f35653c5ee1a8b144ec96ff3fc48532f7.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 01a0276706c7b6fb758a8e2ff9cf221a3dfcae97, 0a3657ebd6b517b60cdc5123894047616974e25b, 1fcc9f9f35653c5ee1a8b144ec96ff3fc48532f7 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: dm raid1: reserve space for NUL-terminator in build_constructor_string() Reserve space for the termination NUL after the maximum 20 decimal digits of a long long value to avoid buffer overflow in sprintf().

—No exploit Fix available
Published
Sep 11, 2026
Updated
Oct 19, 2026
EPSS
0.2% · 14th 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

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Follow CVE-2026-89575

When you'll hear from us

  • when it enters CISA KEV
  • 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

    • 2.6.31affected
    • f5db4af466e2dca0fe822019812d586ca910b00c and later · before 35ba81c93fe7392c973af9881640180490e76f34affected · git
    • f5db4af466e2dca0fe822019812d586ca910b00c and later · before 1fcc9f9f35653c5ee1a8b144ec96ff3fc48532f7affected · git
    • f5db4af466e2dca0fe822019812d586ca910b00c and later · before 7b035983b895db3ae01d9855963d42541db42125affected · git
    • f5db4af466e2dca0fe822019812d586ca910b00c and later · before 01a0276706c7b6fb758a8e2ff9cf221a3dfcae97affected · git
    • f5db4af466e2dca0fe822019812d586ca910b00c and later · before 0a3657ebd6b517b60cdc5123894047616974e25baffected · git
    • f5db4af466e2dca0fe822019812d586ca910b00c and later · before 644140527ae494cedf3b5c0ecd16287deaea7a66affected · git
    • f5db4af466e2dca0fe822019812d586ca910b00c and later · before f79b53ca3a68a46c6fc3b30b148d1dfb1b33ea8baffected · git
    • f5db4af466e2dca0fe822019812d586ca910b00c and later · before 73c37fe54cd056d07461b142ab0b8b81e1ef6ad8affected · git
    • before 2.6.31not 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-2026-89573Sep 11, 2026 · dm array: reject an array block whose value size is not the caller's
    31Monitor
  • ← EarlierCVE-2026-89574Sep 11, 2026 · dm array: validate array block headers on read
    31Monitor
  • Later →CVE-2026-89576Sep 11, 2026 · dm-era: fix shadowed superblock leak on take-snap failure
    0Monitor

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 Linux01a0276706c7b6fb758a8e2ff9cf221a3dfcae97Vendor (CNA)
Linux Linux0a3657ebd6b517b60cdc5123894047616974e25bVendor (CNA)
Linux Linux1fcc9f9f35653c5ee1a8b144ec96ff3fc48532f7Vendor (CNA)
Linux Linux35ba81c93fe7392c973af9881640180490e76f34Vendor (CNA)
Linux Linux644140527ae494cedf3b5c0ecd16287deaea7a66Vendor (CNA)
Linux Linux73c37fe54cd056d07461b142ab0b8b81e1ef6ad8Vendor (CNA)
Linux Linux7b035983b895db3ae01d9855963d42541db42125Vendor (CNA)
Linux Linuxf79b53ca3a68a46c6fc3b30b148d1dfb1b33ea8bVendor (CNA)
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 (7 more)

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

All records