What’s Vulnerable › Vulnerabilities

CVE-2025-40141: Bluetooth: ISO: Fix possible UAF on iso_conn_free

• Severity: high (CVSS 8.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-11-12 · updated 2026-10-19

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 products

• Linux kernel: 6.0 — fixed in 6.18

How to fix

Upgrade to a fixed version: Linux kernel 6.18. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/5319145a07d8bf5b0782b25cb3115825689d42bb
• https://git.kernel.org/stable/c/80689777919f02328eb873769de4647c9dd3e371
• https://git.kernel.org/stable/c/9950f095d6c875dbe0c9ebfcf972ec88fdf26fc8
• https://git.kernel.org/stable/c/c92ad1a155ccfa38b87bd1d998287e1c0a24248d
• https://git.kernel.org/stable/c/eba6d787ec117a5d2c60f9644e0a39c18542b6be

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