CVE-2023-31083

Aliases:UBUNTU-CVE-2023-31083DEBIAN-CVE-2023-31083
Advisory lineage Upstream: 0 Downstream: 36
Modified
Published: 24 Apr 2023, 00:00
Last modified:03 Nov 2025, 21:48

Vulnerability Summary

Overall Risk (default)
low
19/100
CVSS Score
4.7 MEDIUM
v3.1 (nvd)
EPSS Score
0.33% LOW
0% probability +0.32%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

24 Apr 2023, 00:00
Published
Vulnerability first disclosed
03 Nov 2025, 21:48
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.33%• Percentile: 26%

Techniques & Countermeasures

  • CWE-362•Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

    The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

  • CWE-476•NULL Pointer Dereference

    The product dereferences a pointer that it expects to be valid but is NULL.

Affected Systems

  • debian•linux

    < 5.10.226-1 | < 6.1.112-1 | < 6.5.8-1 | < 6.5.8-1

  • debian•linux-6.1

    < 6.1.119-1~deb11u1

  • ubuntu•linux

    all | < 4.4.0-246.280 | < 4.15.0-219.230 | < 5.4.0-166.183 | < 5.15.0-88.98

  • ubuntu•linux-allwinner-5.19

    all

  • ubuntu•linux-aws

    < 4.4.0-1124.130 | < 4.4.0-1162.177 | < 4.15.0-1162.175 | < 5.4.0-1113.123 | < 5.15.0-1049.54

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.11

    all

  • ubuntu•linux-aws-5.13

    all

  • ubuntu•linux-aws-5.15

    < 5.15.0-1049.54~20.04.1

  • ubuntu•linux-aws-5.19

    all

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.4

    < 5.4.0-1113.123~18.04.1

  • ubuntu•linux-aws-5.8

    all

  • ubuntu•linux-aws-6.2

    < 6.2.0-1015.15~22.04.1

  • ubuntu•linux-aws-6.5

    all

  • ubuntu•linux-aws-fips

    < 4.15.0-2101.107 | all | < 5.4.0-1113.123+fips1

  • ubuntu•linux-aws-hwe

    < 4.15.0-1162.175~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1171.186~14.04.1 | < 4.15.0-1171.186~16.04.1 | all | < 5.4.0-1119.126 | < 5.15.0-1051.59

  • ubuntu•linux-azure-4.15

    < 4.15.0-1171.186

  • ubuntu•linux-azure-5.11

    all

  • ubuntu•linux-azure-5.13

    all

  • ubuntu•linux-azure-5.15

    < 5.15.0-1051.59~20.04.1

  • ubuntu•linux-azure-5.19

    all

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.4

    < 5.4.0-1119.126~18.04.2

  • ubuntu•linux-azure-5.8

    all

  • ubuntu•linux-azure-6.2

    < 6.2.0-1016.16~22.04.1

  • ubuntu•linux-azure-6.5

    all

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fde

    all | < 5.15.0-1051.59.1 | all

  • ubuntu•linux-azure-fde-5.15

    < 5.15.0-1114.123~20.04.1

  • ubuntu•linux-azure-fde-5.19

    all

  • ubuntu•linux-azure-fde-6.2

    < 6.2.0-1016.16~22.04.1.1

  • ubuntu•linux-azure-fde-6.8

    all

  • ubuntu•linux-azure-fips

    < 4.15.0-2080.86 | all | < 5.4.0-1119.126+fips1

  • ubuntu•linux-bluefield

    all | < 5.4.0-1074.80 | < 5.15.0-1031.33

  • ubuntu•linux-fips

    < 4.4.0-1094.101 | all | < 4.15.0-1117.128 | < 5.4.0-1088.97

  • ubuntu•linux-gcp

    < 4.15.0-1156.173~16.04.1 | all | < 5.4.0-1117.126 | < 5.15.0-1046.54

  • ubuntu•linux-gcp-4.15

    < 4.15.0-1156.173

  • ubuntu•linux-gcp-5.11

    all

  • ubuntu•linux-gcp-5.13

    all

  • ubuntu•linux-gcp-5.15

    < 5.15.0-1046.54~20.04.1

  • ubuntu•linux-gcp-5.19

    all

  • ubuntu•linux-gcp-5.3

    all

  • ubuntu•linux-gcp-5.4

    < 5.4.0-1117.126~18.04.1

  • ubuntu•linux-gcp-5.8

    all

  • ubuntu•linux-gcp-6.2

    < 6.2.0-1018.20~22.04.1

  • ubuntu•linux-gcp-6.5

    all

  • ubuntu•linux-gcp-fips

    < 4.15.0-2064.69 | all | < 5.4.0-1117.126+fips1

  • ubuntu•linux-gke

    all | < 5.15.0-1046.51

Showing first 50 affected entries in server-rendered view.

References (25)