Race Condition Affecting kernel-debug-modules-extra package, versions <0:4.18.0-553.el8_10


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (5th percentile)

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  • Snyk IDSNYK-RHEL8-KERNELDEBUGMODULESEXTRA-5670227
  • published7 Jun 2023
  • disclosed17 Apr 2023

Introduced: 17 Apr 2023

CVE-2023-31083  (opens in a new tab)
CWE-362  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade RHEL:8 kernel-debug-modules-extra to version 0:4.18.0-553.el8_10 or higher.
This issue was patched in RHSA-2024:3138.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debug-modules-extra package and not the kernel-debug-modules-extra package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

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 Scores

version 3.1