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

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会开源的一款操作系统内核。 Linux kernel 2.6.27版本存在安全漏洞，该漏洞源于btusb驱动在控制器注册失败时未正确释放兄弟接口，导致释放后重用和双重释放。

AI Predicted 5.6 Difficulty: Hard EPSS 0.18% · P8

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 9bfa35fe422c74882e27cc54450a5f76c96aad68< e09ac7d0c6859a360bf36e7104aef03f88184e0b affected
9bfa35fe422c74882e27cc54450a5f76c96aad68< 468fcdfaeb937163dd250773a9fed17ab1fa203c affected
9bfa35fe422c74882e27cc54450a5f76c96aad68< 1ce5012944afaddbda939ec6bae9800fce84abbc affected
9bfa35fe422c74882e27cc54450a5f76c96aad68< e6313b800da61a26c2fdd5eba0105e197c0ab3bc affected
9bfa35fe422c74882e27cc54450a5f76c96aad68< 14e02f1449ba425a44dedbec9a21efafb056e09f affected
9bfa35fe422c74882e27cc54450a5f76c96aad68< 8db0ce3de78367f61c2970c0f16d9adee8830a23 affected
9bfa35fe422c74882e27cc54450a5f76c96aad68< da7d7758fe884b256ddc9fef562e5ddef7952383 affected
9bfa35fe422c74882e27cc54450a5f76c96aad68< eedc6867ebad73edbfaf9a0a65fbef7115cc4753 affected
… +10 more rows
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I. Basic Information for CVE-2026-64471

Vulnerability Information
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Vulnerability Title
Bluetooth: btusb: fix use-after-free on registration failure
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一款操作系统内核。 Linux kernel 2.6.27版本存在安全漏洞，该漏洞源于btusb驱动在控制器注册失败时未正确释放兄弟接口，导致释放后重用和双重释放。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 9bfa35fe422c74882e27cc54450a5f76c96aad68 ~ e09ac7d0c6859a360bf36e7104aef03f88184e0b -
Linux Linux 2.6.27 -

II. Public POCs for CVE-2026-64471

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III. Intelligence Information for CVE-2026-64471

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Patches & Fixes for CVE-2026-64471 (8)

Same Patch Batch · Linux · 2026-07-25 · 274 CVEs total

CVE-2026-64355 9.8 CRITICAL bpf: Reject fragmented frames in devmap
CVE-2026-64459 9.8 CRITICAL tcp: restore RCU grace period in tcp_ao_destroy_sock
CVE-2026-64303 9.8 CRITICAL spi: fsl-lpspi: terminate the RX channel on TX prepare failure path
CVE-2026-64439 9.8 CRITICAL crypto: krb5 - filter out async aead implementations at alloc
CVE-2026-64410 9.8 CRITICAL netfilter: flowtable: IPIP tunnel hardware offload is not yet support
CVE-2026-64399 9.8 CRITICAL ksmbd: add permission checks for FSCTL_DUPLICATE_EXTENTS_TO_FILE
CVE-2026-64397 9.8 CRITICAL ksmbd: serialize QUERY_DIRECTORY requests per file
CVE-2026-64391 9.8 CRITICAL ksmbd: use opener credentials for ADS I/O
CVE-2026-64387 9.8 CRITICAL smb: client: fix query directory replay double-free
CVE-2026-64386 9.8 CRITICAL smb: client: fix query_info() replay double-free
CVE-2026-64385 9.8 CRITICAL smb: client: fix double-free in SMB2_ioctl() replay
CVE-2026-64383 9.8 CRITICAL smb: client: fix double-free in SMB2_flush() replay
CVE-2026-64384 9.8 CRITICAL smb: client: fix change notify replay double-free
CVE-2026-64268 9.8 CRITICAL RDMA/siw: bound Read Response placement to the RREAD length
CVE-2026-64523 9.8 CRITICAL net/handshake: Take a long-lived file reference at submit
CVE-2026-64269 9.1 CRITICAL RDMA/rtrs-srv: Bound RDMA-Write length to chunk size in rdma_write_sg
CVE-2026-64320 9.1 CRITICAL nvmet: fix pre-auth out-of-bounds heap read in Discovery Get Log Page
CVE-2026-64319 9.1 CRITICAL nvmet-auth: validate reply message payload bounds against transfer length
CVE-2026-64257 9.1 CRITICAL smb: client: reject overlapping data areas in SMB2 responses
CVE-2026-64393 9.1 CRITICAL ksmbd: run set info with opener credentials

Showing top 20 of 274 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-64471

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