CVE-2023-31083

2023-04-2400:00:00

ubuntu.com

linux kernel 6.2

bluetooth driver

race condition

4.7 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

0.0004 Low

EPSS

Percentile

5.1%

JSON

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.

Bugs

Notes

Author	Note
	Priority reason: Attaching N_HCI line discipline requires initial user namespace CAP_NET_ADMIN.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-219.230UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-166.183UNKNOWN
ubuntu22.04noarchlinux< 5.15.0-88.98UNKNOWN
ubuntu23.04noarchlinux< 6.2.0-36.37UNKNOWN
ubuntu23.10noarchlinux< anyUNKNOWN
ubuntu16.04noarchlinux< 4.4.0-246.280UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1162.175UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1113.123UNKNOWN
ubuntu22.04noarchlinux-aws< 5.15.0-1049.54UNKNOWN
ubuntu23.04noarchlinux-aws< 6.2.0-1015.15UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	linux	< 4.15.0-219.230	UNKNOWN
ubuntu	20.04	noarch	linux	< 5.4.0-166.183	UNKNOWN
ubuntu	22.04	noarch	linux	< 5.15.0-88.98	UNKNOWN
ubuntu	23.04	noarch	linux	< 6.2.0-36.37	UNKNOWN
ubuntu	23.10	noarch	linux	< any	UNKNOWN
ubuntu	16.04	noarch	linux	< 4.4.0-246.280	UNKNOWN
ubuntu	18.04	noarch	linux-aws	< 4.15.0-1162.175	UNKNOWN
ubuntu	20.04	noarch	linux-aws	< 5.4.0-1113.123	UNKNOWN
ubuntu	22.04	noarch	linux-aws	< 5.15.0-1049.54	UNKNOWN
ubuntu	23.04	noarch	linux-aws	< 6.2.0-1015.15	UNKNOWN