kernel: Bluetooth: L2CAP: Fix div-by-zero in l2cap_le_flowctl_init()

in linux kernel bluetooth L2CAP, l2capleflowctlinit can cause both div-by-zero and an integer overflow since hdev-lemtu may not fall in the valid range...

The vulnerability of the llc component in the Linux operating system’s kernel allows a hacker to trigger a service failure.

The vulnerability of the llc component in the Linux operating system’s kernel is related to the use of an uninitialized resource. Exploiting this vulnerability can allow an attacker to cause a service failure...

Bluetooth: L2CAP: Fix div-by-zero in l2cap_le_flowctl_init()

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Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. Linux kernel has a security vulnerability that stems from a vulnerability in the llc module...

The vulnerability of the llc_ui_sendmsg() function in the net/llc/af_llc.c module of the LLC2 protocol implementation in Linux’s operating system allows a hacker to cause a service failure.

The vulnerability of the llcuisendmsg function in the net/llc/afllc.c module of the LLC2 protocol implementation in Linux’s operating system is related to the use of incorrect data. Exploiting this vulnerability could allow an attacker to cause a service failure...

kernel: Information leak in l2cap_parse_conf_req in net/bluetooth/l2cap_core.c

An information leak vulnerability was found in the Linux kernel's implementation of logical link control and adaptation protocol L2CAP, part of the Bluetooth stack in the l2capparseconfreq function. An attacker with physical access within the range of standard Bluetooth transmission could use thi...

kernel: use-after-free in l2cap_sock_release in net/bluetooth/l2cap_sock.c

A flaw was found in l2capsockrelease in net/bluetooth/l2capsock.c in the Bluetooth subsystem in the Linux Kernel. This issue may allow a user to cause a use-after-free problem due to sk's children being mishandled...

kernel: use-after-free in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c

A use-after-free flaw was found in the Linux kernel's implementation of logical link control and adaptation protocol L2CAP, part of the Bluetooth stack in the l2capconnect and l2capleconnectreq functions. An attacker with physical access within the range of standard Bluetooth transmission could...

kernel: use-after-free in l2cap_connect and l2cap_le_connect_req in net/bluetooth/l2cap_core.c

A use-after-free flaw was found in the Linux kernel's implementation of logical link control and adaptation protocol L2CAP, part of the Bluetooth stack in the l2capconnect and l2capleconnectreq functions. An attacker with physical access within the range of standard Bluetooth transmission could...

PT-2025-41117

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a flaw in the Bluetooth implementation where the disconnect callback is called after the connection has been deleted. Specifically, in the hci cs disconnect...

kernel: use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c

A use-after-free flaw was found in the Linux kernel’s L2CAP bluetooth functionality in how a user triggers a race condition by two malicious flows in the L2CAP bluetooth packets. This flaw allows a local or bluetooth connection user to crash the system or potentially escalate privileges...

SUSE CVE-2012-6544

The Bluetooth protocol stack in the Linux kernel before 3.6 does not properly initialize certain structures, which allows local users to obtain sensitive information from kernel stack memory via a crafted application that targets the 1 L2CAP or 2 HCI implementation...

SUSE CVE-2021-27861

Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using LLC/SNAP headers with invalid length and optionally VLAN0 headers...

The vulnerability of the LLC subsystem in the Linux kernel, related to insufficient validation of input data, allows a hacker to trigger a service failure.

The vulnerability of the LLC subsystem in the Linux kernel is related to insufficient validation of input data. Exploiting this vulnerability can allow an attacker to cause a service failure...

kernel: net: bluetooth: type confusion while processing AMP packets

A flaw was found in the way the Linux kernel’s Bluetooth implementation handled L2CAP Logical Link Control and Adaptation Protocol packets with A2MP Alternate MAC-PHY Manager Protocol CID Channel Identifier. This flaw allows a remote attacker in an adjacent range to crash the system, causing a...

kernel: net: bluetooth: type confusion while processing AMP packets

A flaw was found in the way the Linux kernel’s Bluetooth implementation handled L2CAP Logical Link Control and Adaptation Protocol packets with A2MP Alternate MAC-PHY Manager Protocol CID Channel Identifier. This flaw allows a remote attacker in an adjacent range to crash the system, causing a...

kernel: net: bluetooth: type confusion while processing AMP packets

A flaw was found in the way the Linux kernel’s Bluetooth implementation handled L2CAP Logical Link Control and Adaptation Protocol packets with A2MP Alternate MAC-PHY Manager Protocol CID Channel Identifier. This flaw allows a remote attacker in an adjacent range to crash the system, causing a...

kernel: net: bluetooth: type confusion while processing AMP packets

A flaw was found in the way the Linux kernel’s Bluetooth implementation handled L2CAP Logical Link Control and Adaptation Protocol packets with A2MP Alternate MAC-PHY Manager Protocol CID Channel Identifier. This flaw allows a remote attacker in an adjacent range to crash the system, causing a...

kernel: Heap address information leak while using L2CAP_GET_CONF_OPT

A flaw was found in the Linux kernel's implementation of Logical Link Control and Adaptation Protocol L2CAP, part of the Bluetooth stack. An attacker, within the range of standard Bluetooth transmissions, can create and send a specially crafted packet. The response to this specially crafted packe...

kernel: Heap address information leak while using L2CAP_GET_CONF_OPT

A flaw was found in the Linux kernel's implementation of Logical Link Control and Adaptation Protocol L2CAP, part of the Bluetooth stack. An attacker, within the range of standard Bluetooth transmissions, can create and send a specially crafted packet. The response to this specially crafted packe...