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AlienVault OTX General

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AlienVault OTX Vulnerabilities

AlienVault OTX Malware

An issue was discovered in drivers/bluetooth/hci_ldisc.c in the Linux kernel 6.2. In hci_uart_tty_ioctl, there is a race condition between HCIUARTSETPROTO and HCIUARTGETPROTO. HCI_UART_PROTO_SET is set before hu->proto is set. A NULL pointer dereference may occur.

CVE-2023-31083 is a race condition vulnerability identified in the Linux kernel version 6.2 within the Bluetooth subsystem, specifically in the hci_uart_tty_ioctl function of the hci_ldisc.c driver file. The vulnerability occurs due to a timing issue between two ioctl commands: HCIUARTSETPROTO and HCIUARTGETPROTO. In this race condition, the HCI_UART_PROTO_SET flag is set before the hu->proto pointer is properly initialized, which can lead to a NULL pointer dereference when the system attempts to access hu->proto. This results in a kernel panic or crash, effectively causing a denial of service (DoS) condition. The flaw is triggered by local interaction with the Bluetooth UART interface, meaning an attacker requires local access to the system and the ability to issue ioctl commands to the Bluetooth device. Although no public exploits have been reported, the vulnerability poses a risk to system stability and availability. The issue stems from improper synchronization and state management in the Bluetooth UART driver, highlighting the importance of careful concurrency control in kernel code. Since the Linux kernel is widely used across servers, desktops, and embedded devices, this vulnerability has broad implications. However, exploitation requires local access, limiting remote attack vectors. The absence of a CVSS score necessitates an assessment based on impact and exploitability factors.

Detailed information about CVE-2023-31083: n/a. Get real-time updates, technical details, and mitigation strategies.

CVE-2023-31083: n/a - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2023-31083: n/a

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