Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2023-53374

Severity CVSS v4.0:
Pending analysis
Type:
CWE-416 Use After Free
Publication date:
18/09/2025
Last modified:
12/12/2025

Description

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

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.80
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.3.8 (including) 6.4 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.4.1 (including) 6.4.16 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.5 (including) 6.5.3 (excluding)
cpe:2.3:o:linux:linux_kernel:6.4:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.4:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.4:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.4:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.4:rc7:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools