CVE-2023-31083

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.

CVSS v3 4.7 MEDIUM

4.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.0 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://bugzilla.suse.com/show_bug.cgi?id=1210780
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9c33663af9ad115f90c076a1828129a3fbadea98
https://lore.kernel.org/all/CA+UBctC3p49aTgzbVgkSZ2+TQcqq4fPDO7yZitFT5uBPDeCO2g%40mail.gmail.com/
https://security.netapp.com/advisory/ntap-20230929-0003/
https://bugzilla.suse.com/show_bug.cgi?id=1210780
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9c33663af9ad115f90c076a1828129a3fbadea98
https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
https://lore.kernel.org/all/CA+UBctC3p49aTgzbVgkSZ2+TQcqq4fPDO7yZitFT5uBPDeCO2g%40mail.gmail.com/
https://security.netapp.com/advisory/ntap-20230929-0003/

Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:6.2:*:*:*:*:*:*:*

History

03 Nov 2025, 22:16

Type	Values Removed	Values Added
References		() https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html - () https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html -

Information

Published : 2023-04-24 06:15

Updated : 2025-11-03 22:16

NVD link : CVE-2023-31083

Mitre link : CVE-2023-31083

CVE.ORG link : CVE-2023-31083

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CWE-476

NULL Pointer Dereference

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