kernel: Bluetooth: hci_sync: fix stack buffer overflow in hci_le_big_create_sync

A flaw was found in the Linux kernel's Bluetooth Host Controller Interface HCI synchronization. A local user could trigger a stack buffer overflow by binding a specific type of Bluetooth socket with an excessive number of Bluetooth Isochronous Stream BIS entries. This memory corruption can lead t...

kernel: Bluetooth: MGMT: validate LTK enc_size on load

A flaw was found in the Linux kernel's Bluetooth management MGMT component. An attacker could exploit a vulnerability in how Long Term Keys LTK are loaded. By providing an oversized encryption size, a stack buffer overflow can occur, potentially leading to a denial of service...

Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP7 kernel was updated to fix various security issues: The following security issues were fixed: CVE-2024-26730: hwmon: nct6775 Fix access to temperature configuration registers bsc1222538. CVE-2025-38704: rcu/nocb: Fix possible invalid rdp's-nocbcbkthread pointer...

Linux net/bluetooth hci_read_codec_capabilities Buffer Overflow

The vulnerability of the hcireadcodeccapabilities function in the net/bluetooth/hcicodec.c component of the Linux operating system is related to insufficient resource control during its existence. Exploiting this vulnerability could allow an attacker to compromise the confidentiality, integrity,...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcievent: call disconnect callback before deleting conn In hcicsdisconnect, we do hciconndel even if disconnection failed. ISO, L2CAP and SCO connections refer to the hciconn without hciconnget, so disconncfm must be...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SMP – deriving legacy responder STK authentication from the MITM state The legacy responder path in smprandom currently labels the stored STK as authenticated whenever pendingseclevel is set to BTSECURITYHIGH. This...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: L2CAP: Fixed a slab-use-after-free in l2capconnect. Extended a critical section to prevent chan from being freed prematurely. Also, made the return type of l2capconnect void. Nothing is currently using the returned...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, Linux, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btintel: Fixed a null pointer dereference in btintelreadversion. If hcicmdsyncComplete is triggered and skb is NULL, then hdev-reqskb will also be NULL, which will cause this issue...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: btusb: Added a NULL check for “date-evtskb”. Fixed crashes due to NULL pointers. 6104.969662 BUG: NULL pointer dereferencing in the kernel; address: 00000000000000c8 6104.969667 PF: Supervisor read access in kernel...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: validate option length before reading the conf opt value The l2capgetconfopt function derives the option length from the attacker-controlled opt-len field. It immediately dereferes opt-val as a u8, using...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: hcisync: Fixed a UAF Use-after-Free in the accept list during suspension. The hciupdateeventfiltersync function iterates through hdev-acceptlist while sending synchronous HCI commands for each remote-wakeup device...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: eir: Fixed possible crashes when using eircreateadvdata. eircreateadvdata may attempt to add EIRFLAGS and EIRTXPOWER without checking whether it would fit within the limits...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: 6lowpan: resetting the link-local header in the IPv6 receive path The Bluetooth 6lowpan.c netdev module has the headerops function; therefore, it must set the link-local header for the RX skb packet. Otherwise, thin...

Astra Linux – Vulnerabilities in Linux, Linux-5.15, Linux-5.10, Linux-6.1

A issue was discovered in the driver/bluetooth/hcildisc.c file within the Linux kernel 6.2. In hciuartttyioctl, there is a race condition between HCIUARTSETPROTO and HCIUARTGETPROTO. The HCIUARTPROTOSET function is called before hu-proto is set. A NULL pointer dereferencing may occur...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: fixed a locking issue in hciconnrequestevt when HCIPROTODEFER is set. When the protocol sets HCIPROTODEFER, the hciconnrequestevt function calls hciconnectcfmconn without holding the hdev-lock. Typically, hciconnectcfm...

Astra Linux – Vulnerability found in Linux 6.1, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: Wifi: brcmfmac – Fix for use-after-free when rescheduling the brcmfbtcoexinfo worker. The brcmfbtcoexdetach function only shuts down the btcoex timer if the timeron flag is set to false. However, the brcmfbtcoextimerfunc function...

Astra Linux – Vulnerability in Linux 5.10, Linux, Linux 5.15

A issue was discovered in l2capsockrelease in net/bluetooth/l2capsock.c in the Linux kernel before version 6.4.10. There is a use-after-free issue, as the children of a sk object are handled incorrectly...

Astra Linux – Vulnerability found in Linux 5.10, Linux 6.1, and Linux 5.15

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: In btusb, there is an issue where the cleanup process in btusbdisconnect is performed in a different order, which can lead to a Use-After-Free UAF condition. There is also a KASAN issue in btusbdisconnect: A read...

Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: qca – fixed an issue where information was leaked when fetching the fw build id. Added missing sanity checks and moved the 255-byte build-id buffer off the stack to prevent the leakage of stack data through debugfs,...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcievent: Fixed UAF in hciaclcreateconnsync This fixed the following UAF in hciaclcreateconnsync where a connection that is still pending may be freed after command submission conn-state == BTOPEN. This issue can also...