CVE-2025-40141

Bluetooth: ISO: Fix possible UAF on iso_conn_free

HIGH

CVSS Score

Published: November 12, 2025 at 10:23 AM UTC

Updated: October 19, 2026 at 09:10 PM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH8

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: Fix possible UAF on iso_conn_free This attempt to fix similar issue to sco_conn_free where if the conn->sk is not set to NULL may lead to UAF on iso_conn_free.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

90%

6.0ccf74f2390d60a2f9a75ef496d2564abb478f46a

Vendor states this is fixed in 5319145a07d8bf5b0782b25cb3115825689d42bb (fixed)

Vendor states this is fixed in 80689777919f02328eb873769de4647c9dd3e371 (fixed)

Vendor states this is fixed in 9950f095d6c875dbe0c9ebfcf972ec88fdf26fc8 (fixed)

Vendor states this is fixed in c92ad1a155ccfa38b87bd1d998287e1c0a24248d (fixed)

Vendor states this is fixed in eba6d787ec117a5d2c60f9644e0a39c18542b6be (fixed)

Vendor states this is fixed in 6.0 (unaffected)

Vendor states this is fixed in 6.1.156 (unaffected)

Vendor states this is fixed in 6.12.53 (unaffected)

Vendor states this is fixed in 6.17.3 (unaffected)

Vendor states this is fixed in 6.18 (unaffected)

Vendor states this is fixed in 6.6.112 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

Source: cverecord

https://git.kernel.org/stable/c/eba6d787ec117a5d2c60f9644e0a39c18542b6be

Source: cverecord

https://git.kernel.org/stable/c/5319145a07d8bf5b0782b25cb3115825689d42bb

Source: cverecord

https://git.kernel.org/stable/c/80689777919f02328eb873769de4647c9dd3e371

Source: cverecord

https://git.kernel.org/stable/c/c92ad1a155ccfa38b87bd1d998287e1c0a24248d

Source: cverecord

https://git.kernel.org/stable/c/9950f095d6c875dbe0c9ebfcf972ec88fdf26fc8

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8HIGHLinux

Vector?

Quick Info

StatusDEFERRED

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