kernel: Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync

A flaw was found in the Linux kernel’s Bluetooth subsystem HCI. Specifically, in the function hciaclcreateconnsync and related path hcilecreateconnsync, a connection object in state BTOPEN that is still pending command submission may be freed prematurely, leading to a use-after-free condition. An...

kernel: Bluetooth: MGMT: Fix possible UAFs

A flaw was found in the Linux kernel’s Bluetooth management subsystem net/bluetooth/mgmt.c. The mgmtpending structure may be freed while still being processed, or remain on the pending command list, which allows a use-after-free or double-free scenario. An attacker with local access to the system...

CVE-2023-53828

CVE-2023-53828 affects the Linux kernel Bluetooth subsystem (net/bluetooth/hci_core.c) where hci_add_adv_monitor() triggers a use-after-free via a path through msft_add_monitor_pattern(), msft_add_monitor_sync(), and msft_le_monitor_advertisement_cb() in error handling. KSAN reported the use-afte...

CVE-2023-53828

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: Avoid use-after-free in dbg for hciaddadvmonitor KSAN reports use-after-free in hciaddadvmonitor. While adding an adv monitor, hciaddadvmonitor calls - msftaddmonitorpattern calls - msftaddmonitorsync calls -...

CVE-2023-53828 Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_add_adv_monitor()

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: Avoid use-after-free in dbg for hciaddadvmonitor KSAN reports use-after-free in hciaddadvmonitor. While adding an adv monitor, hciaddadvmonitor calls - msftaddmonitorpattern calls - msftaddmonitorsync calls -...

CVE-2023-53828 Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_add_adv_monitor()

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: Avoid use-after-free in dbg for hciaddadvmonitor KSAN reports use-after-free in hciaddadvmonitor. While adding an adv monitor, hciaddadvmonitor calls - msftaddmonitorpattern calls - msftaddmonitorsync calls -...

CVE-2023-53827

The CVE-2023-53827 issue affects the Linux kernel Bluetooth subsystem (L2CAP). The vulnerability is caused by a use-after-free in l2cap_disconnect_{req,rsp}. The cited fix uses l2cap_chan_hold_unless_zero to avoid referencing a channel that is about to be destroyed, addressing the underlying refe...

CVE-2023-53827

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix use-after-free in l2capdisconnectreq,rsp Similar to commit d0be8347c623 "Bluetooth: L2CAP: Fix use-after-free caused by l2capchanput", just use l2capchanholdunlesszero to prevent referencing a channel that i...

CVE-2023-53827 Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp}

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix use-after-free in l2capdisconnectreq,rsp Similar to commit d0be8347c623 "Bluetooth: L2CAP: Fix use-after-free caused by l2capchanput", just use l2capchanholdunlesszero to prevent referencing a channel that i...

CVE-2023-53827 Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp}

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix use-after-free in l2capdisconnectreq,rsp Similar to commit d0be8347c623 "Bluetooth: L2CAP: Fix use-after-free caused by l2capchanput", just use l2capchanholdunlesszero to prevent referencing a channel that i...

Bluetooth: SCO: Fix UAF on sco_conn_free

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SUSE CVE-2023-53762

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: Fix UAF in hcidisconnectallsync Use-after-free can occur in hcidisconnectallsync if a connection is deleted by concurrent processing of a controller event. To prevent this the code now tries to iterate over th...

SUSE CVE-2025-40294

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: Fix OOB access in parseadvmonitorpattern In the parseadvmonitorpattern function, the value of the 'length' variable is currently limited to HCIMAXEXTADLENGTH251. The size of the 'value' array in the mgmtadvpatter...

SUSE CVE-2025-40301

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcievent: validate skb length for unknown CC opcode In hcicmdcompleteevt, if the command complete event has an unknown opcode, we assume the first byte of the remaining skb-data contains the return status. However,...

SUSE CVE-2025-40308

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bcsp: receive data only if registered Currently, bcsprecv can be called even when the BCSP protocol has not been registered. This leads to a NULL pointer dereference, as shown in the following stack trace: KASAN:...

SUSE CVE-2025-40309

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SCO: Fix UAF on scoconnfree BUG: KASAN: slab-use-after-free in scoconnfree net/bluetooth/sco.c:87 inline BUG: KASAN: slab-use-after-free in krefput include/linux/kref.h:65 inline BUG: KASAN: slab-use-after-free in...

SUSE CVE-2025-40318

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcisync: fix race in hcicmdsyncdequeueonce hcicmdsyncdequeueonce does lookup and then cancel the entry under two separate lock sections. Meanwhile, hcicmdsyncwork can also delete the same entry, leading to double listd...

PT-2025-49719

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A use-after-free issue exists in the Bluetooth component of the Linux kernel, specifically within the hci add adv monitor function. The issue occurs when adding an advertisement monitor,...

PT-2025-49718

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the Linux kernel's Bluetooth L2CAP implementation, specifically within the l2cap disconnect req and l2cap disconnect rsp functions. This issue involves a use-after-free...

RHEL 7 : kernel-rt (RHSA-2025:22914)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:22914 advisory. The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism...