Linux Kernel Bluetooth Vulnerability: Potential Use-After-Free Issue in Key Handling
CVE-2023-53386

7.8HIGH

Key Information:

Vendor

Linux

Status
Vendor
CVE Published:
18 September 2025

What is CVE-2023-53386?

A vulnerability has been identified in the Linux kernel related to Bluetooth functionality. This issue arises from a potential use-after-free condition when handling cryptographic keys. When clearing keys, improper memory access may occur after the memory has been freed, potentially leading to unintended behavior or system instability. It is crucial for users and administrators to ensure their systems are updated to mitigate this risk.

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Affected Version(s)

Linux d7d41682efc25d58b5bd8b80e85e3c9ce586635c

Linux d7d41682efc25d58b5bd8b80e85e3c9ce586635c < 942d8cefb022f384d5424f8b90c7878f3f93726f

Linux d7d41682efc25d58b5bd8b80e85e3c9ce586635c < 94617b736c25091b60e514e2e7aeafcbbee6b700

References

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.