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

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: L2CAP: fixed the “bad unlock balance” issue in l2capdisconnectrsp. The conn-chanlock is not acquired before l2capgetchanbyscid. If l2capgetchanbyscid returns NULL, then the “bad unlock balance” issue will be trigger...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: hcisync: fixed leaks when hcicmdsyncqueueonce fails When hcicmdsyncqueueonce returns an error, the destroy callback will not be called. Fixed the issue of leaking references/memory in cases where this error occurs...

Astra Linux – Vulnerability in Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fixed the crash caused by hcisuspendsync. If hciunregisterdev frees the hcidev object, but hcisuspendnotifier may still access it, this can cause the program to crash. Here is the call trace: 102152.653246 Call Trace:...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fixed a possible deadlock in rfcommskstatechange. syzbot reports a possible deadlock in rfcommskstatechange 1. While rfcommsockconnect acquires the sk lock and waits for the rfcomm lock, rfcommsockrelease might acquire...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: hcisync: fixed a memory leak in hciupdateadvdata. When hcicmdsyncqueue fails in hciupdateadvdata, the instptr is not freed, which can lead to a memory leak. To address this issue, ERRPTR/PTRERR was used instead of...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Use memset to avoid memory leaks. Use memset to initialize structs to prevent memory leaks. In l2capecredconnect...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: Fix to ensure that the LED is cleaned up when btinit fails. The btinit function calls btledsinit to register the LED. However, if this function fails later, the btledscleanup function is not called to unregister the...

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: qca: fix NULL-dereferencing on non-serdev controllers during suspension Qualcomm ROME controllers can be registered through the Bluetooth interface. In this case, the HCI UART serdev pointer is NULL. A missing sanity...

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 a crash 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 in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: L2CAP: Fix for u8 overflow By continuously sending L2CAPCONFREQ packets, chan-numconfrsp increases multiple times, eventually exceeding the maximum number i.e., 255. This patch prevents this issue by adding a bounda...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: hcidevcddump: Fixed an out-of-bounds error caused by devcoredumpv. Currently, both devcoredumpv and skbPutData in hcidevcddump use hdev-dump.head. However, devcoredumpv can free the buffer. According to the...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: hciqca: Fixed the driver shutdown when the serdev is closed. The driver shutdown callback which sends EDLSOCRESET to the device via serdev should not be invoked when the HCI device is not open e.g., if hcidevopensyn...

Astra Linux – Vulnerability in bluez

Bluetooth HID Hosts in BlueZ may allow an unauthenticated peripheral role HID device to initiate and establish an encrypted connection, and to accept HID keyboard reports. This could potentially allow the injection of HID messages when no user interaction has occurred in the Central role, thereby...

Astra Linux – Vulnerability in Linux

In the Linux kernel before version 5.12.4, the net/bluetooth/hcievent.c file contains a use-after-free issue when destroying an hcichan, specifically related to CID-5c4c8c954409. This issue results in the writing of an arbitrary value...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: btnxpuart: Fixed the issue with btnxpuartclose. Fixed the scheduling issue during the atomic operation in btnxpuartclose. Properly purged the transmit queue and freed the receiveskb. 10.973809 BUG: Scheduling during...

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

The btsockrecvmsg function in net/bluetooth/afbluetooth.c in the Linux kernel, as of version 6.6.8, has a use-after-free issue due to a race condition involving btsockioctl...

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

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: L2CAP: Fixed an issue where user input was not validated. The length of user input was checked before data was copied...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerabilities have been resolved: Bluetooth: L2CAP: Fixed “use-after-free” issue This involves using l2capchanholdunlesszero after calling l2capgetchanblah to prevent the following issue: Bluetooth: l2capcore.c: static void l2capchandestroystruct krefkref...

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: rfcomm: Fixed a nullptrderef issue in rfcommchecksecurity. During our fuzz testing of the connection and disconnection processes at the RFCOMM layer, we discovered this bug. By comparing the packets generated during a...