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NVD / CVE Program· CNA Linux

CVE-2026-72224: nvdimm/btt: Free arenas on btt_init() error paths

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: 0.22% (FIRST EPSS).
  • Fixed version: Linux Linux 0b63788093ff6ccfffe6e87de9e08aeeb406599c, 1a6b6442a982d0ca5fb6a1a39b6f6dfd760eda57, 52a7e7ece79c4b0f406149e19cd2b4b11a6c19e4.

Low priority for now. Upgrade to Linux Linux 0b63788093ff6ccfffe6e87de9e08aeeb406599c, 1a6b6442a982d0ca5fb6a1a39b6f6dfd760eda57, 52a7e7ece79c4b0f406149e19cd2b4b11a6c19e4 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: nvdimm/btt: Free arenas on btt_init() error paths The arenas allocated by discover_arenas() or create_arenas() are not freed on some error paths in btt_init(). This leaks memory when BTT initialization fails. Call free_arenas() from the affected error paths to release the allocations. [ as: commit message and log edits ]

—No exploit Fix available
Published
Aug 15, 2026
Updated
Nov 6, 2026
EPSS
0.2% · 12th 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%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

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.

Follow CVE-2026-72224

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

    • 4.2affected
    • 5212e11fde4d40fa627668b4f2222d20db488f71 and later · before 9ab5293d9ac3f2c4232220e563d04701f5f44607affected · git
    • 5212e11fde4d40fa627668b4f2222d20db488f71 and later · before 68c967e105d50f885e02b0dbdc9211fd5f84bdcdaffected · git
    • 5212e11fde4d40fa627668b4f2222d20db488f71 and later · before 0b63788093ff6ccfffe6e87de9e08aeeb406599caffected · git
    • 5212e11fde4d40fa627668b4f2222d20db488f71 and later · before 5804e6a6912b5a1e47c821777d69191d69a3fe64affected · git
    • 5212e11fde4d40fa627668b4f2222d20db488f71 and later · before 52a7e7ece79c4b0f406149e19cd2b4b11a6c19e4affected · git
    • 5212e11fde4d40fa627668b4f2222d20db488f71 and later · before f4ca396bdd60b4e0a665b2589bfc4ddbea9bda2baffected · git
    • 5212e11fde4d40fa627668b4f2222d20db488f71 and later · before 7e49684d90faa34ff6d5586be658e986d9d475acaffected · git
    • 5212e11fde4d40fa627668b4f2222d20db488f71 and later · before 1a6b6442a982d0ca5fb6a1a39b6f6dfd760eda57affected · git
    • before 4.2not affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.180-16.1.180-1
Debian:13linuxbefore 6.12.100-16.12.100-1
Debian:14linuxbefore 7.1.5-17.1.5-1

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-2026-72222Aug 15, 2026 · sunrpc: pin svc_xprt across the asynchronous TLS handshake callback
    39Monitor
  • ← EarlierCVE-2026-72223Aug 15, 2026 · nvdimm/btt: Free arena sub-allocations on discover_arenas() error path
    0Monitor
  • Later →CVE-2026-72225Aug 15, 2026 · jbd2: fix integer underflow in jbd2_journal_initialize_fast_commit()
    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 Linux0b63788093ff6ccfffe6e87de9e08aeeb406599cVendor (CNA)
Linux Linux1a6b6442a982d0ca5fb6a1a39b6f6dfd760eda57Vendor (CNA)
Linux Linux52a7e7ece79c4b0f406149e19cd2b4b11a6c19e4Vendor (CNA)
Linux Linux5804e6a6912b5a1e47c821777d69191d69a3fe64Vendor (CNA)
Linux Linux68c967e105d50f885e02b0dbdc9211fd5f84bdcdVendor (CNA)
Linux Linux7e49684d90faa34ff6d5586be658e986d9d475acVendor (CNA)
Linux Linux9ab5293d9ac3f2c4232220e563d04701f5f44607Vendor (CNA)
Linux Linuxf4ca396bdd60b4e0a665b2589bfc4ddbea9bda2bVendor (CNA)
debian:linux6.1.180-1 · 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).

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. SSVC exploitation— → none
  2. 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