Linux Kernel up to 6.14.8 ALSA snd_pcm_format_set_silence initialization

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.14.8. It has been rated as problematic. This vulnerability affects the function snd_pcm_format_set_silence of the component ALSA. This manipulation causes initialization. This vulnerability is registered as CVE-2025-38078. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.14.8. It has been declared as problematic. Affected by this vulnerability is the function snd_pcm_format_set_silence of the component ALSA. The manipulation with an unknown input leads to a initialization vulnerability. The CWE definition for the vulnerability is CWE-665. The product does not initialize or incorrectly initializes a resource, which might leave the resource in an unexpected state when it is accessed or used. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Fix race of buffer access at PCM OSS layer The PCM OSS layer tries to clear the buffer with the silence data at initialization (or reconfiguration) of a stream with the explicit call of snd_pcm_format_set_silence() with runtime->dma_area. But this may lead to a UAF because the accessed runtime->dma_area might be freed concurrently, as it's performed outside the PCM ops. For avoiding it, move the code into the PCM core and perform it inside the buffer access lock, so that it won't be changed during the operation.

The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2025-38078 since 04/16/2025. The exploitation appears to be difficult. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 242218 (SUSE SLES12 Security Update : kernel (SUSE-SU-2025:02334-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.4.294, 5.10.238, 5.15.185, 6.1.141, 6.6.93, 6.12.31 or 6.14.9 eliminates this vulnerability. Applying the patch c0e05a76fc727929524ef24a19c302e6dd40233f/8170d8ec4efd0be352c14cb61f374e30fb0c2a25/10217da9644ae75cea7330f902c35fc5ba78bbbf/f3e14d706ec18faf19f5a6e75060e140fea05d4a/74d90875f3d43f3eff0e9861c4701418795d3455/bf85e49aaf3a3c5775ea87369ea5f159c2148db4/afa56c960fcb4db37f2e3399f28e9402e4e1f470/93a81ca0657758b607c3f4ba889ae806be9beb73 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 (242218), EUVD (EUVD-2025-18575) and CERT Bund (WID-SEC-2025-1350). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • Open Source Linux Kernel
  • RESF Rocky Linux
  • Dell Avamar
  • Dell NetWorker
  • 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: 4.6
VulDB Meta Temp Score: 4.6

VulDB Base Score: 4.6
VulDB Temp Score: 4.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.7
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

Exploitinginfo

Class: Initialization
CWE: CWE-665
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 242218
Nessus Name: SUSE SLES12 Security Update : kernel (SUSE-SU-2025:02334-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.4.294/5.10.238/5.15.185/6.1.141/6.6.93/6.12.31/6.14.9
Patch: c0e05a76fc727929524ef24a19c302e6dd40233f/8170d8ec4efd0be352c14cb61f374e30fb0c2a25/10217da9644ae75cea7330f902c35fc5ba78bbbf/f3e14d706ec18faf19f5a6e75060e140fea05d4a/74d90875f3d43f3eff0e9861c4701418795d3455/bf85e49aaf3a3c5775ea87369ea5f159c2148db4/afa56c960fcb4db37f2e3399f28e9402e4e1f470/93a81ca0657758b607c3f4ba889ae806be9beb73

Timelineinfo

04/16/2025 🔍
06/18/2025 +63 days 🔍
06/18/2025 +0 days 🔍
02/19/2026 +246 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-38078 (🔍)
GCVE (CVE): GCVE-0-2025-38078
GCVE (VulDB): GCVE-100-312865
EUVD: 🔍
CERT Bund: WID-SEC-2025-1350 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 06/18/2025 12:06
Updated: 02/19/2026 06:17
Changes: 06/18/2025 12:06 (58), 06/18/2025 16:17 (1), 07/17/2025 15:00 (2), 12/17/2025 19:44 (11), 02/19/2026 06:17 (8)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you know our Splunk app?

Download it now for free!