CVE-2023-53374 — Use After Free in Linux

CWE-416 — Use After Free5 documents5 sources
Severity
7.8HIGHNVD
EPSS
0.0%
top 97.35%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LinuxLinux KernelDebian Linux
Timeline
PublishedSep 18

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 C…

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages4 packages

▶NVDlinux/linux_kernel6.3.8 — 6.4+3
▶Debianlinux/linux_kernel< 6.5.3-1+1
▶CVEListV5linux/linuxca1fd42e7dbfcb34890ffbf1f2f4b356776dab6f — 397d58007532644b35fad746da48c41161f32a57+4
▶debiandebian/linux< linux 6.5.3-1 (forky)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-wwxc-q6v4-r672: 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 call↗2025-09-18
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OSV
CVE-2023-53374: 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 callin↗2025-09-18
▶

📋Vendor Advisories

2
Red Hat
kernel: Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early↗2025-09-18
▶
Debian
CVE-2023-53374: linux - In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ...↗2023
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CVE-2023-53374 — Use After Free in Linux | cvebase