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Red Hat: CVE-2023-31083: kernel: race condition between HCIUARTSETPROTO and HCIUARTGETPROTO in hci_uart_tty_ioctl (Multiple Advisories)

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Red Hat: CVE-2023-31083: kernel: race condition between HCIUARTSETPROTO and HCIUARTGETPROTO in hci_uart_tty_ioctl (Multiple Advisories)

Severity
4
CVSS
(AV:L/AC:H/Au:S/C:N/I:N/A:C)
Published
04/24/2023
Created
05/24/2024
Added
05/23/2024
Modified
05/23/2024

Description

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.

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

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