CVE-2023-28464

Published: October 18, 2023Last modified: September 30, 2025

Description

hci_conn_cleanup in net/bluetooth/hci_conn.c in the Linux kernel through 6.2.9 has a use-after-free (observed in hci_conn_hash_flush) because of calls to hci_dev_put and hci_conn_put. There is a double free that may lead to privilege escalation.

Severity score breakdown

Status

References

• https://lore.kernel.org/lkml/20230309074645.74309-1-wzhmmmmm%40gmail.com/
• https://lore.kernel.org/lkml/[email protected]/
• https://security.netapp.com/advisory/ntap-20230517-0004/
• https://www.openwall.com/lists/oss-security/2023/03/28/2
• https://www.openwall.com/lists/oss-security/2023/03/28/3