Linux Kernel up to 6.1.8 hci_update_adv_data memory leak

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Linux Kernel up to 6.1.8. Affected is the function hci_update_adv_data. This manipulation causes memory leak. This vulnerability is registered as CVE-2023-53017. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.1.8. It has been declared as critical. Affected by this vulnerability is the function hci_update_adv_data. The manipulation with an unknown input leads to a memory leak vulnerability. The CWE definition for the vulnerability is CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. As an impact it is known to affect availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: fix memory leak in hci_update_adv_data() When hci_cmd_sync_queue() failed in hci_update_adv_data(), inst_ptr is not freed, which will cause memory leak, convert to use ERR_PTR/PTR_ERR to pass the instance to callback so no memory needs to be allocated.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2023-53017 since 03/27/2025. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 6.1.9 eliminates this vulnerability. Applying the patch 8ac6043bd3e5b58d30f50737aedc2e58e8087ad5/1ed8b37cbaf14574c779064ef1372af62e8ba6aa is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2025-0649). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • Dell Avamar
  • Open Source Linux Kernel
  • SolarWinds Security Event Manager
  • Dell NetWorker
  • Dell Secure Connect Gateway

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.1.9
Patch: 8ac6043bd3e5b58d30f50737aedc2e58e8087ad5/1ed8b37cbaf14574c779064ef1372af62e8ba6aa

Timelineinfo

03/27/2025 🔍
03/27/2025 +0 days 🔍
03/27/2025 +0 days 🔍
12/07/2025 +255 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-53017 (🔍)
GCVE (CVE): GCVE-0-2023-53017
GCVE (VulDB): GCVE-100-301795
CERT Bund: WID-SEC-2025-0649 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 03/27/2025 18:58
Updated: 12/07/2025 08:03
Changes: 03/27/2025 18:58 (58), 08/24/2025 20:05 (7), 12/07/2025 08:03 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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