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NVD / CVE Program· CNA Linux

CVE-2026-64471: Bluetooth: btusb: fix use-after-free on registration failure

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: 0.18% (FIRST EPSS).
  • Fixed version: Linux Linux 14e02f1449ba425a44dedbec9a21efafb056e09f, 1ce5012944afaddbda939ec6bae9800fce84abbc, 468fcdfaeb937163dd250773a9fed17ab1fa203c; azl3 kernel 6.6.144.1-1 on Azure Linux 3.0 6.6.145.2-1.

Low priority for now. Upgrade to Linux Linux 14e02f1449ba425a44dedbec9a21efafb056e09f, 1ce5012944afaddbda939ec6bae9800fce84abbc, 468fcdfaeb937163dd250773a9fed17ab1fa203c; azl3 kernel 6.6.144.1-1 on Azure Linux 3.0 6.6.145.2-1 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: Bluetooth: btusb: fix use-after-free on registration failure Make sure to release the sibling interfaces in case controller registration fails to avoid use-after-free and double-free when they are eventually disconnected. This issue was reported by Sashiko while reviewing a fix for a wakeup source leak in the btusb probe errors paths.

—No exploit Fix available
Published
Jul 25, 2026
Updated
Nov 6, 2026
EPSS
0.1% · 8th 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%

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.

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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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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

    • 2.6.27affected
    • 9bfa35fe422c74882e27cc54450a5f76c96aad68 and later · before e09ac7d0c6859a360bf36e7104aef03f88184e0baffected · git
    • 9bfa35fe422c74882e27cc54450a5f76c96aad68 and later · before 468fcdfaeb937163dd250773a9fed17ab1fa203caffected · git
    • 9bfa35fe422c74882e27cc54450a5f76c96aad68 and later · before 1ce5012944afaddbda939ec6bae9800fce84abbcaffected · git
    • 9bfa35fe422c74882e27cc54450a5f76c96aad68 and later · before e6313b800da61a26c2fdd5eba0105e197c0ab3bcaffected · git
    • 9bfa35fe422c74882e27cc54450a5f76c96aad68 and later · before 14e02f1449ba425a44dedbec9a21efafb056e09faffected · git
    • 9bfa35fe422c74882e27cc54450a5f76c96aad68 and later · before 8db0ce3de78367f61c2970c0f16d9adee8830a23affected · git
    • 9bfa35fe422c74882e27cc54450a5f76c96aad68 and later · before da7d7758fe884b256ddc9fef562e5ddef7952383affected · git
    • 9bfa35fe422c74882e27cc54450a5f76c96aad68 and later · before eedc6867ebad73edbfaf9a0a65fbef7115cc4753affected · git
    • before 2.6.27not 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:12linux-6.12before 6.12.100-1~deb12u16.12.100-1~deb12u1
Debian:13linuxbefore 6.12.96-16.12.96-1
Debian:14linuxbefore 7.1.4-17.1.4-1

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-2026-64469Jul 25, 2026 · binder: fix UAF in binder_thread_release()
    31Monitor
  • ← EarlierCVE-2026-64470Jul 25, 2026 · Bluetooth: btusb: fix use-after-free on marvell probe failure
    0Monitor
  • Later →CVE-2026-64472Jul 25, 2026 · vfio/mlx5: Fix racy bitfields and tighten struct layout
    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 Linux14e02f1449ba425a44dedbec9a21efafb056e09fVendor (CNA)
Linux Linux1ce5012944afaddbda939ec6bae9800fce84abbcVendor (CNA)
Linux Linux468fcdfaeb937163dd250773a9fed17ab1fa203cVendor (CNA)
Linux Linux8db0ce3de78367f61c2970c0f16d9adee8830a23Vendor (CNA)
Linux Linuxda7d7758fe884b256ddc9fef562e5ddef7952383Vendor (CNA)
Linux Linuxe09ac7d0c6859a360bf36e7104aef03f88184e0bVendor (CNA)
Linux Linuxe6313b800da61a26c2fdd5eba0105e197c0ab3bcVendor (CNA)
Linux Linuxeedc6867ebad73edbfaf9a0a65fbef7115cc4753Vendor (CNA)
azl3 kernel 6.6.144.1-1 on Azure Linux 3.06.6.145.2-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
debian:linux6.1.180-1 · Debian:12Package registry (OSV)
debian:linux-6.126.12.100-1~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).

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