Is CVE-2023-53520 in the CISA KEV catalog?

No. CVE-2023-53520 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-53520?

CVE-2023-53520 has a CVSS v3 base score of 4.7 (MEDIUM).

What is the EPSS score for CVE-2023-53520?

CVE-2023-53520 has an EPSS score of 0.10% (1th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-53520?

Upgrade linux on debian 12 to 6.1.55-1 or later. Fixes are available for 135 affected products.

CVE & CISA-KEV Catalog

CVE-2023-53520

MEDIUM

4.7

CVSS v3

NVD

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix hci_suspend_sync crash If hci_unregister_dev() frees the hci_dev object but hci_suspend_notifier may still be accessing it, it can cause the program to crash. Here's the call trace: <4>[102152.653246] Call Trace: <4>[102152.653254] hci_suspend_sync+0x109/0x301 [bluetooth] <4>[102152.653259] hci_suspend_dev+0x78/0xcd [bluetooth] <4>[102152.653263] hci_suspend_notifier+0x42/0x7a [bluetooth] <4>[102152.653268] notifier_call_chain+0x43/0x6b <4>[102152.653271] __blocking_notifier_call_chain+0x48/0x69 <4>[102152.653273] __pm_notifier_call_chain+0x22/0x39 <4>[102152.653276] pm_suspend+0x287/0x57c <4>[102152.653278] state_store+0xae/0xe5 <4>[102152.653281] kernfs_fop_write+0x109/0x173 <4>[102152.653284] __vfs_write+0x16f/0x1a2 <4>[102152.653287] ? selinux_file_permission+0xca/0x16f <4>[102152.653289] ? security_file_permission+0x36/0x109 <4>[102152.653291] vfs_write+0x114/0x21d <4>[102152.653293] __x64_sys_write+0x7b/0xdb <4>[102152.653296] do_syscall_64+0x59/0x194 <4>[102152.653299] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 This patch holds the reference count of the hci_dev object while processing it in hci_suspend_notifier to avoid potential crash caused by the race condition.

CWE-362Race Condition

How to fix

Remediation Available

linuxDebian

Fixed in:6.1.55-1CVE-2023-53520

Fixed in:6.5.6-1CVE-2023-53520

linuxUbuntu

Fixed in:5.15.0-176.186USN-8180-1

linux-awsUbuntu

Fixed in:5.15.0-1105.112USN-8180-1

linux-aws-5.15Ubuntu

Fixed in:5.15.0-1105.112~20.04.1USN-8180-1

linux-azureUbuntu

Fixed in:5.15.0-1110.119USN-8180-3

linux-azure-5.15Ubuntu

Fixed in:5.15.0-1110.119~20.04.1USN-8243-1

linux-azure-fipsUbuntu

Fixed in:5.15.0-1110.119+fips1USN-8180-4

linux-fipsUbuntu

Fixed in:5.15.0-176.186+fips1USN-8180-2

linux-gcpUbuntu

Fixed in:5.15.0-1105.114USN-8180-1

linux-gcp-5.15Ubuntu

Fixed in:5.15.0-1106.115~20.04.1USN-8297-1

linux-gcp-fipsUbuntu

Fixed in:5.15.0-1105.114+fips1USN-8180-2

linux-gkeUbuntu

Fixed in:5.15.0-1101.107USN-8180-1

linux-gkeopUbuntu

Fixed in:5.15.0-1088.96USN-8180-1

linux-hwe-5.15Ubuntu

Fixed in:5.15.0-176.186~20.04.1USN-8188-1

linux-ibmUbuntu

Fixed in:5.15.0-1099.102USN-8180-5

linux-ibm-5.15Ubuntu

Fixed in:5.15.0-1099.102~20.04.1USN-8180-5

linux-image-5.15.0-1046-nvidia-tegra-igxUbuntu

Fixed in:5.15.0-1046.46+1USN-8187-1

linux-image-5.15.0-1046-nvidia-tegra-igx-rtUbuntu

Fixed in:5.15.0-1046.46+1USN-8187-1

linux-image-5.15.0-1057-nvidia-tegraUbuntu

Fixed in:5.15.0-1057.57~20.04.1USN-8162-1

Fixed in:5.15.0-1057.57USN-8187-1

linux-image-5.15.0-1057-nvidia-tegra-rtUbuntu

Fixed in:5.15.0-1057.57~20.04.1USN-8162-1

Fixed in:5.15.0-1057.57USN-8187-1

linux-image-5.15.0-1070-xilinx-zynqmpUbuntu

Fixed in:5.15.0-1070.74USN-8275-1

linux-image-5.15.0-1088-gkeopUbuntu

Fixed in:5.15.0-1088.96USN-8180-1

linux-image-5.15.0-1097-intel-iot-realtimeUbuntu

Fixed in:5.15.0-1097.99USN-8186-1

linux-image-5.15.0-1097-kvmUbuntu

Fixed in:5.15.0-1097.102USN-8180-3

linux-image-5.15.0-1099-ibmUbuntu

Fixed in:5.15.0-1099.102~20.04.1USN-8180-5

Fixed in:5.15.0-1099.102USN-8180-5

linux-image-5.15.0-1099-raspiUbuntu

Fixed in:5.15.0-1099.102USN-8180-6

linux-image-5.15.0-1100-intel-iotgUbuntu

Fixed in:5.15.0-1100.106~20.04.1USN-8180-3

Fixed in:5.15.0-1100.106USN-8180-3

linux-image-5.15.0-1100-nvidiaUbuntu

Fixed in:5.15.0-1100.101USN-8180-1

linux-image-5.15.0-1100-nvidia-lowlatencyUbuntu

Fixed in:5.15.0-1100.101USN-8180-1

linux-image-5.15.0-1101-gkeUbuntu

Fixed in:5.15.0-1101.107USN-8180-1

linux-image-5.15.0-1102-oracleUbuntu

Fixed in:5.15.0-1102.108~20.04.1USN-8180-3

Fixed in:5.15.0-1102.108USN-8180-1

linux-image-5.15.0-1104-realtimeUbuntu

Fixed in:5.15.0-1104.113USN-8186-1

linux-image-5.15.0-1105-awsUbuntu

Fixed in:5.15.0-1105.112~20.04.1USN-8180-1

Fixed in:5.15.0-1105.112USN-8180-1

linux-image-5.15.0-1105-aws-64kUbuntu

Fixed in:5.15.0-1105.112USN-8180-1

linux-image-5.15.0-1105-gcpUbuntu

Fixed in:5.15.0-1105.114USN-8180-1

linux-image-5.15.0-1105-gcp-fipsUbuntu

Fixed in:5.15.0-1105.114+fips1USN-8180-2

linux-image-5.15.0-1106-gcpUbuntu

Fixed in:5.15.0-1106.115~20.04.1USN-8297-1

linux-image-5.15.0-1110-azureUbuntu

Fixed in:5.15.0-1110.119~20.04.1USN-8243-1

Fixed in:5.15.0-1110.119USN-8180-3

linux-image-5.15.0-1110-azure-fipsUbuntu

Fixed in:5.15.0-1110.119+fips1USN-8180-4

linux-image-5.15.0-175-lowlatencyUbuntu

Fixed in:5.15.0-175.185~20.04.1USN-8180-1

Fixed in:5.15.0-175.185USN-8180-1

linux-image-5.15.0-175-lowlatency-64kUbuntu

Fixed in:5.15.0-175.185~20.04.1USN-8180-1

Fixed in:5.15.0-175.185USN-8180-1

linux-image-5.15.0-176-fipsUbuntu

Fixed in:5.15.0-176.186+fips1USN-8180-2

linux-image-5.15.0-176-genericUbuntu

Fixed in:5.15.0-176.186~20.04.1USN-8188-1

Fixed in:5.15.0-176.186USN-8180-1

linux-image-5.15.0-176-generic-64kUbuntu

Fixed in:5.15.0-176.186~20.04.1USN-8188-1

Fixed in:5.15.0-176.186USN-8180-1

linux-image-5.15.0-176-generic-lpaeUbuntu

Fixed in:5.15.0-176.186~20.04.1USN-8188-1

Fixed in:5.15.0-176.186USN-8180-1

linux-image-awsUbuntu

Fixed in:5.15.0.1105.112~20.04.1USN-8180-1

linux-image-aws-5.15Ubuntu

Fixed in:5.15.0.1105.112~20.04.1USN-8180-1

Fixed in:5.15.0.1105.108USN-8180-1

linux-image-aws-64k-5.15Ubuntu

Fixed in:5.15.0.1105.108USN-8180-1

linux-image-aws-64k-lts-22.04Ubuntu

Fixed in:5.15.0.1105.108USN-8180-1

linux-image-aws-lts-22.04Ubuntu

Fixed in:5.15.0.1105.108USN-8180-1

linux-image-azureUbuntu

Fixed in:5.15.0.1110.119~20.04.1USN-8243-1

linux-image-azure-5.15Ubuntu

Fixed in:5.15.0.1110.119~20.04.1USN-8243-1

Fixed in:5.15.0.1110.108USN-8180-3

linux-image-azure-cvmUbuntu

Fixed in:5.15.0.1110.119~20.04.1USN-8243-1

linux-image-azure-fipsUbuntu

Fixed in:5.15.0.1110.95USN-8180-4

linux-image-azure-fips-5.15Ubuntu

Fixed in:5.15.0.1110.95USN-8180-4

linux-image-azure-lts-22.04Ubuntu

Fixed in:5.15.0.1110.108USN-8180-3

linux-image-fipsUbuntu

Fixed in:5.15.0.176.102USN-8180-2

linux-image-fips-5.15Ubuntu

Fixed in:5.15.0.176.102USN-8180-2

linux-image-gcpUbuntu

Fixed in:5.15.0.1106.115~20.04.1USN-8297-1

linux-image-gcp-5.15Ubuntu

Fixed in:5.15.0.1106.115~20.04.1USN-8297-1

Fixed in:5.15.0.1105.101USN-8180-1

linux-image-gcp-fipsUbuntu

Fixed in:5.15.0.1105.95USN-8180-2

linux-image-gcp-fips-5.15Ubuntu

Fixed in:5.15.0.1105.95USN-8180-2

linux-image-gcp-lts-22.04Ubuntu

Fixed in:5.15.0.1105.101USN-8180-1

linux-image-genericUbuntu

Fixed in:5.15.0.176.161USN-8180-1

linux-image-generic-5.15Ubuntu

Fixed in:5.15.0.176.186~20.04.1USN-8188-1

Fixed in:5.15.0.176.161USN-8180-1

linux-image-generic-64kUbuntu

Fixed in:5.15.0.176.161USN-8180-1

linux-image-generic-64k-5.15Ubuntu

Fixed in:5.15.0.176.186~20.04.1USN-8188-1

Fixed in:5.15.0.176.161USN-8180-1

linux-image-generic-64k-hwe-20.04Ubuntu

Fixed in:5.15.0.176.186~20.04.1USN-8188-1

linux-image-generic-hwe-20.04Ubuntu

Fixed in:5.15.0.176.186~20.04.1USN-8188-1

linux-image-generic-lpaeUbuntu

Fixed in:5.15.0.176.161USN-8180-1

linux-image-generic-lpae-5.15Ubuntu

Fixed in:5.15.0.176.186~20.04.1USN-8188-1

Fixed in:5.15.0.176.161USN-8180-1

linux-image-generic-lpae-hwe-20.04Ubuntu

Fixed in:5.15.0.176.186~20.04.1USN-8188-1

linux-image-gkeUbuntu

Fixed in:5.15.0.1101.100USN-8180-1

linux-image-gke-5.15Ubuntu

Fixed in:5.15.0.1101.100USN-8180-1

linux-image-gkeopUbuntu

Fixed in:5.15.0.1088.87USN-8180-1

linux-image-gkeop-5.15Ubuntu

Fixed in:5.15.0.1088.87USN-8180-1

linux-image-ibmUbuntu

Fixed in:5.15.0.1099.102~20.04.1USN-8180-5

Fixed in:5.15.0.1099.95USN-8180-5

linux-image-ibm-5.15Ubuntu

Fixed in:5.15.0.1099.102~20.04.1USN-8180-5

Fixed in:5.15.0.1099.95USN-8180-5

linux-image-intelUbuntu

Fixed in:5.15.0.1100.106~20.04.1USN-8180-3

linux-image-intel-iot-realtimeUbuntu

Fixed in:5.15.0.1097.101USN-8186-1

linux-image-intel-iot-realtime-5.15Ubuntu

Fixed in:5.15.0.1097.101USN-8186-1

linux-image-intel-iotgUbuntu

Fixed in:5.15.0.1100.106~20.04.1USN-8180-3

Fixed in:5.15.0.1100.99USN-8180-3

linux-image-intel-iotg-5.15Ubuntu

Fixed in:5.15.0.1100.106~20.04.1USN-8180-3

Fixed in:5.15.0.1100.99USN-8180-3

linux-image-kvmUbuntu

Fixed in:5.15.0.1097.93USN-8180-3

linux-image-kvm-5.15Ubuntu

Fixed in:5.15.0.1097.93USN-8180-3

linux-image-lowlatencyUbuntu

Fixed in:5.15.0.175.148USN-8180-1

linux-image-lowlatency-5.15Ubuntu

Fixed in:5.15.0.175.185~20.04.1USN-8180-1

Fixed in:5.15.0.175.148USN-8180-1

linux-image-lowlatency-64kUbuntu

Fixed in:5.15.0.175.148USN-8180-1

linux-image-lowlatency-64k-5.15Ubuntu

Fixed in:5.15.0.175.185~20.04.1USN-8180-1

Fixed in:5.15.0.175.148USN-8180-1

linux-image-lowlatency-64k-hwe-20.04Ubuntu

Fixed in:5.15.0.175.185~20.04.1USN-8180-1

linux-image-lowlatency-hwe-20.04Ubuntu

Fixed in:5.15.0.175.185~20.04.1USN-8180-1

linux-image-nvidiaUbuntu

Fixed in:5.15.0.1100.100USN-8180-1

linux-image-nvidia-5.15Ubuntu

Fixed in:5.15.0.1100.100USN-8180-1

linux-image-nvidia-lowlatencyUbuntu

Fixed in:5.15.0.1100.100USN-8180-1

linux-image-nvidia-lowlatency-5.15Ubuntu

Fixed in:5.15.0.1100.100USN-8180-1

linux-image-nvidia-tegraUbuntu

Fixed in:5.15.0.1057.57~20.04.1USN-8162-1

Fixed in:5.15.0.1057.57USN-8187-1

linux-image-nvidia-tegra-5.15Ubuntu

Fixed in:5.15.0.1057.57~20.04.1USN-8162-1

Fixed in:5.15.0.1057.57USN-8187-1

linux-image-nvidia-tegra-igxUbuntu

Fixed in:5.15.0.1046.48USN-8187-1

linux-image-nvidia-tegra-igx-5.15Ubuntu

Fixed in:5.15.0.1046.48USN-8187-1

linux-image-nvidia-tegra-igx-rtUbuntu

Fixed in:5.15.0.1046.48USN-8187-1

linux-image-nvidia-tegra-igx-rt-5.15Ubuntu

Fixed in:5.15.0.1046.48USN-8187-1

linux-image-nvidia-tegra-rtUbuntu

Fixed in:5.15.0.1057.57~20.04.1USN-8162-1

Fixed in:5.15.0.1057.57USN-8187-1

linux-image-nvidia-tegra-rt-5.15Ubuntu

Fixed in:5.15.0.1057.57~20.04.1USN-8162-1

Fixed in:5.15.0.1057.57USN-8187-1

linux-image-oem-20.04Ubuntu

Fixed in:5.15.0.176.186~20.04.1USN-8188-1

linux-image-oem-20.04bUbuntu

Fixed in:5.15.0.176.186~20.04.1USN-8188-1

linux-image-oem-20.04cUbuntu

Fixed in:5.15.0.176.186~20.04.1USN-8188-1

linux-image-oem-20.04dUbuntu

Fixed in:5.15.0.176.186~20.04.1USN-8188-1

linux-image-oracleUbuntu

Fixed in:5.15.0.1102.108~20.04.1USN-8180-3

linux-image-oracle-5.15Ubuntu

Fixed in:5.15.0.1102.108~20.04.1USN-8180-3

Fixed in:5.15.0.1102.98USN-8180-1

linux-image-oracle-lts-22.04Ubuntu

Fixed in:5.15.0.1102.98USN-8180-1

linux-image-raspiUbuntu

Fixed in:5.15.0.1099.97USN-8180-6

linux-image-raspi-5.15Ubuntu

Fixed in:5.15.0.1099.97USN-8180-6

linux-image-raspi-nolpaeUbuntu

Fixed in:5.15.0.1099.97USN-8180-6

linux-image-realtimeUbuntu

Fixed in:5.15.0.1104.108USN-8186-1

linux-image-realtime-5.15Ubuntu

Fixed in:5.15.0.1104.108USN-8186-1

linux-image-virtualUbuntu

Fixed in:5.15.0.176.161USN-8180-1

linux-image-virtual-5.15Ubuntu

Fixed in:5.15.0.176.186~20.04.1USN-8188-1

Fixed in:5.15.0.176.161USN-8180-1

linux-image-virtual-hwe-20.04Ubuntu

Fixed in:5.15.0.176.186~20.04.1USN-8188-1

linux-image-xilinx-zynqmpUbuntu

Fixed in:5.15.0.1070.73USN-8275-1

linux-image-xilinx-zynqmp-5.15Ubuntu

Fixed in:5.15.0.1070.73USN-8275-1

linux-intel-iot-realtimeUbuntu

Fixed in:5.15.0-1097.99USN-8186-1

linux-intel-iotgUbuntu

Fixed in:5.15.0-1100.106USN-8180-3

linux-intel-iotg-5.15Ubuntu

Fixed in:5.15.0-1100.106~20.04.1USN-8180-3

linux-kvmUbuntu

Fixed in:5.15.0-1097.102USN-8180-3

linux-lowlatencyUbuntu

Fixed in:5.15.0-175.185USN-8180-1

linux-lowlatency-hwe-5.15Ubuntu

Fixed in:5.15.0-175.185~20.04.1USN-8180-1

linux-nvidiaUbuntu

Fixed in:5.15.0-1100.101USN-8180-1

linux-nvidia-tegraUbuntu

Fixed in:5.15.0-1057.57USN-8187-1

linux-nvidia-tegra-5.15Ubuntu

Fixed in:5.15.0-1057.57~20.04.1USN-8162-1

linux-nvidia-tegra-igxUbuntu

Fixed in:5.15.0-1046.46USN-8187-1

linux-oracleUbuntu

Fixed in:5.15.0-1102.108USN-8180-1

linux-oracle-5.15Ubuntu

Fixed in:5.15.0-1102.108~20.04.1USN-8180-3

linux-raspiUbuntu

Fixed in:5.15.0-1099.102USN-8180-6

linux-realtimeUbuntu

Fixed in:5.15.0-1104.113USN-8186-1

linux-xilinx-zynqmpUbuntu

Fixed in:5.15.0-1070.74USN-8275-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.10%probability of exploitation in 30 days

1stpercentile

Low risk: more likely to be exploited than 1% of all known CVEs.

References

Patch4

Related Vulnerabilities

Other CWE-362 (Race Condition) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-6387	High	8.1	100%	-	Fix
CVE-2023-36884	High	7.5	99%	KEV + Ransom	Fix
CVE-2018-15473	Medium	5.3	99%	-	Fix
CVE-2024-27983	High	8.2	87%	-	Fix
CVE-2014-0226	Medium	6.8	86%	-	Fix
CVE-2016-5195	High	7.0	84%	KEV	Fix

Embed a live status badge for CVE-2023-53520

Markdown

[![CVE-2023-53520](https://tridentstack.com/cve/badge/CVE-2023-53520.svg)](https://tridentstack.com/cve/CVE-2023-53520)

HTML

<a href="https://tridentstack.com/cve/CVE-2023-53520"><img src="https://tridentstack.com/cve/badge/CVE-2023-53520.svg" alt="CVE-2023-53520"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-06.