CVE-2026-43018

Summary

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt

hci_conn lookup and field access must be covered by hdev lock in hci_le_remote_conn_param_req_evt, otherwise it's possible it is freed concurrently.

Extend the hci_dev_lock critical section to cover all conn usage.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux95118dd4edfec950898a00180c6f998df0a6406d < 59eecf0ffde15670e6a5e10c47be67f73d843b20affected
LinuxLinux95118dd4edfec950898a00180c6f998df0a6406d < 5fb69e1eeea9d6cba80517e9f058b56b34bc3a81affected
LinuxLinux95118dd4edfec950898a00180c6f998df0a6406d < 7cadb03be37e761130edb153544fe0770a842b19affected
LinuxLinux95118dd4edfec950898a00180c6f998df0a6406d < 1d0bdbfe3e91c11f0a704c52443a9446a10d699caffected
LinuxLinux95118dd4edfec950898a00180c6f998df0a6406d < ea3cd36d7382d5f8309df04c275d20df139ed42caffected
LinuxLinux95118dd4edfec950898a00180c6f998df0a6406d < b255531b27da336571411248c2a72a350662bd09affected
LinuxLinux5.17affected
LinuxLinux0 < 5.17unaffected
LinuxLinux6.1.168 <= 6.1.*unaffected
LinuxLinux6.6.134 <= 6.6.*unaffected
LinuxLinux6.12.81 <= 6.12.*unaffected
LinuxLinux6.18.22 <= 6.18.*unaffected
LinuxLinux6.19.12 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References