CVE-2023-53374

HIGH EPSS 4.3%
Published Sep 18, 20259mo ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published Sep 18, 2025 9mo ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early Not calling hci_(dis)connect_cfm before deleting conn referred to by a socket generally results to use-after-free. When cleaning up SCO connections when the parent ACL is deleted too early, use hci_conn_failed to do the connection cleanup properly. We also need to clean up ISO connections in a similar situation when connecting has started but LE Create CIS is not yet sent, so do it too here.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
4.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 8

VendorProductVersionRange
linuxlinux_kernel*≥6.3.8  –  <6.4
linuxlinux_kernel*≥6.4.1  –  <6.4.16
linuxlinux_kernel*≥6.5  –  <6.5.3
linuxlinux_kernel6.4any
linuxlinux_kernel6.4any
linuxlinux_kernel6.4any
linuxlinux_kernel6.4any
linuxlinux_kernel6.4any

References 3

  • git.kernel.org https://git.kernel.org/stable/c/3344d318337d9dca928fd448e966557ec5063f85
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/397d58007532644b35fad746da48c41161f32a57
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e94b898463a62b72a2a8b75dea8936bf4db78e00
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/3344d318337d9dca928fd448e966557ec5063f85
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/397d58007532644b35fad746da48c41161f32a57
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e94b898463a62b72a2a8b75dea8936bf4db78e00
    Patch