Linux Kernel up to 6.3.3 ALSA get_line_out_pfx privilege escalation

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.3.3. It has been declared as critical. Impacted is the function get_line_out_pfx of the component ALSA. Such manipulation leads to an unknown weakness. This vulnerability is referenced as CVE-2023-53400. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.3.3. It has been rated as critical. Affected by this issue is the function get_line_out_pfx of the component ALSA. The impact remains unknown. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: ALSA: hda: Fix Oops by 9.1 surround channel names get_line_out_pfx() may trigger an Oops by overflowing the static array with more than 8 channels. This was reported for MacBookPro 12,1 with Cirrus codec. As a workaround, extend for the 9.1 channels and also fix the potential Oops by unifying the code paths accessing the same array with the proper size check.

The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2023-53400 since 09/17/2025. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 265609 (Linux Distros Unpatched Vulnerability : CVE-2023-53400), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.14.316, 4.19.284, 5.4.244, 5.10.181, 5.15.113, 6.1.30 or 6.3.4 eliminates this vulnerability. Applying the patch 082dcd51667b29097500c824c37f24da997a6a8a/b5694aae4c2d9a288bafce7d38f122769e0428e6/4ef155ddf9578bf035964d58739fdcd7dd44b4a4/546b1f5f45a355ae0d3a8041cdaca597dfcac825/e8c7d7c43d5edd20e518fe1dfb2371d1fe6e8bb8/dc8c569d59f17b17d7bca4f68c36bd571659921e/fcf637461019e9a5a0c12fc5c42a9db1779b0634/3b44ec8c5c44790a82f07e90db45643c762878c6 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 databases at Tenable (265609) and CERT Bund (WID-SEC-2025-2092). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Open Source Linux Kernel
  • Dell Secure Connect Gateway
  • IBM QRadar SIEM

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 265609
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2023-53400

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 4.14.316/4.19.284/5.4.244/5.10.181/5.15.113/6.1.30/6.3.4
Patch: 082dcd51667b29097500c824c37f24da997a6a8a/b5694aae4c2d9a288bafce7d38f122769e0428e6/4ef155ddf9578bf035964d58739fdcd7dd44b4a4/546b1f5f45a355ae0d3a8041cdaca597dfcac825/e8c7d7c43d5edd20e518fe1dfb2371d1fe6e8bb8/dc8c569d59f17b17d7bca4f68c36bd571659921e/fcf637461019e9a5a0c12fc5c42a9db1779b0634/3b44ec8c5c44790a82f07e90db45643c762878c6

Timelineinfo

09/17/2025 CVE reserved
09/18/2025 +1 days Advisory disclosed
09/18/2025 +0 days VulDB entry created
12/13/2025 +86 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-53400 (🔒)
GCVE (CVE): GCVE-0-2023-53400
GCVE (VulDB): GCVE-100-324890
CERT Bund: WID-SEC-2025-2092 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 09/18/2025 16:41
Updated: 12/13/2025 04:07
Changes: 09/18/2025 16:41 (58), 09/20/2025 16:19 (7), 09/21/2025 21:17 (2), 11/29/2025 17:40 (1), 12/13/2025 04:07 (10)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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