Linux Kernel up to 7.1.3 Btusb use after free

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8.4	$0-$5k	2.38

Summaryinfo

A vulnerability, which was classified as very critical, was found in Linux Kernel up to 7.1.3. Affected by this issue is some unknown functionality of the component Btusb. Such manipulation leads to use after free. This vulnerability is uniquely identified as CVE-2026-64471. Local access is required to approach this attack. No exploit exists.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.1.3 and classified as very critical. Affected by this issue is some unknown functionality of the component Btusb. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2026-64471 since 07/19/2026. The exploitation is known to be easy. The attack needs to be approached locally. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/25/2026).

Upgrading to version 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.96, 6.18.39, 7.1.4 or 7.2-rc1 eliminates this vulnerability. Applying the patch e09ac7d0c6859a360bf36e7104aef03f88184e0b/468fcdfaeb937163dd250773a9fed17ab1fa203c/1ce5012944afaddbda939ec6bae9800fce84abbc/e6313b800da61a26c2fdd5eba0105e197c0ab3bc/14e02f1449ba425a44dedbec9a21efafb056e09f/8db0ce3de78367f61c2970c0f16d9adee8830a23/da7d7758fe884b256ddc9fef562e5ddef7952383/eedc6867ebad73edbfaf9a0a65fbef7115cc4753 is able to eliminate this problem.

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Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.10.260
• 5.15.211
• 6.1.177
• 6.6.144
• 6.12.0
• 6.12.1
• 6.12.2
• 6.12.3
• 6.12.4
• 6.12.5
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• 6.12.84
• 6.12.85
• 6.12.86
• 6.12.87
• 6.12.88
• 6.12.89
• 6.12.90
• 6.12.91
• 6.12.92
• 6.12.93
• 6.12.94
• 6.12.95
• 6.18.0
• 6.18.1
• 6.18.2
• 6.18.3
• 6.18.4
• 6.18.5
• 6.18.6
• 6.18.7
• 6.18.8
• 6.18.9
• 6.18.10
• 6.18.11
• 6.18.12
• 6.18.13
• 6.18.14
• 6.18.15
• 6.18.16
• 6.18.17
• 6.18.18
• 6.18.19
• 6.18.20
• 6.18.21
• 6.18.22
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• 6.18.25
• 6.18.26
• 6.18.27
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• 6.18.29
• 6.18.30
• 6.18.31
• 6.18.32
• 6.18.33
• 6.18.34
• 6.18.35
• 6.18.36
• 6.18.37
• 6.18.38
• 7.1.0
• 7.1.1
• 7.1.2
• 7.1.3

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.4

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.261/5.15.212/6.1.178/6.6.145/6.12.96/6.18.39/7.1.4/7.2-rc1
Patch: e09ac7d0c6859a360bf36e7104aef03f88184e0b/468fcdfaeb937163dd250773a9fed17ab1fa203c/1ce5012944afaddbda939ec6bae9800fce84abbc/e6313b800da61a26c2fdd5eba0105e197c0ab3bc/14e02f1449ba425a44dedbec9a21efafb056e09f/8db0ce3de78367f61c2970c0f16d9adee8830a23/da7d7758fe884b256ddc9fef562e5ddef7952383/eedc6867ebad73edbfaf9a0a65fbef7115cc4753

Timelineinfo

07/19/2026 CVE reserved
07/25/2026 +6 days Advisory disclosed
07/25/2026 +0 days VulDB entry created
07/25/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-64471 (🔒)
GCVE (CVE): GCVE-0-2026-64471
GCVE (VulDB): GCVE-100-383252

Entryinfo

Created: 07/25/2026 18:54
Changes: 07/25/2026 18:54 (58)
Complete: 🔍
Cache ID: 216::103

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