Linux Kernel up to 6.17.2 ASoC bytcr_rt5651 out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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3.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.17.2. The impacted element is the function bytcr_rt5651 of the component ASoC. Executing a manipulation can lead to out-of-bounds. This vulnerability is tracked as CVE-2025-40121. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.17.2. It has been declared as problematic. This vulnerability affects the function bytcr_rt5651 of the component ASoC. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: ASoC: Intel: bytcr_rt5651: Fix invalid quirk input mapping When an invalid value is passed via quirk option, currently bytcr_rt5640 driver just ignores and leaves as is, which may lead to unepxected results like OOB access. This patch adds the sanity check and corrects the input mapping to the certain default value if an invalid value is passed.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2025-40121 since 04/16/2025. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 276782 (Debian dla-4379 : linux-config-6.1 - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.4.301, 5.10.246, 5.15.195, 6.1.156, 6.6.112, 6.12.53, 6.17.3 or 6.18-rc1 eliminates this vulnerability. Applying the patch bff827b0d507e52b23efab9f67c232a4f037ab2c/64a36a7032082b4c330ce081acb6efb99246020e/95e29db33b5f73218ae08ebb48c61c9a8d28e2ff/2204e582b4eea872e1e7a5c90edcb84b928c68b0/f197894de2f4ef46c7d53827d9df294b75c35e13/fdf99978a6480e14405212472b6c747e0fa43bed/c60f269c123210a6846d6d1367de0eaa402c10b0/4336efb59ef364e691ef829a73d9dbd4d5ed7c7b 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 (276782) and CERT Bund (WID-SEC-2025-2579). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • Open Source Linux Kernel
  • RESF Rocky Linux

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
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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Nessus ID: 276782
Nessus Name: Debian dla-4379 : linux-config-6.1 - security update

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.4.301/5.10.246/5.15.195/6.1.156/6.6.112/6.12.53/6.17.3/6.18-rc1
Patch: bff827b0d507e52b23efab9f67c232a4f037ab2c/64a36a7032082b4c330ce081acb6efb99246020e/95e29db33b5f73218ae08ebb48c61c9a8d28e2ff/2204e582b4eea872e1e7a5c90edcb84b928c68b0/f197894de2f4ef46c7d53827d9df294b75c35e13/fdf99978a6480e14405212472b6c747e0fa43bed/c60f269c123210a6846d6d1367de0eaa402c10b0/4336efb59ef364e691ef829a73d9dbd4d5ed7c7b

Timelineinfo

04/16/2025 CVE reserved
11/12/2025 +210 days Advisory disclosed
11/12/2025 +0 days VulDB entry created
02/08/2026 +88 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-40121 (🔒)
GCVE (CVE): GCVE-0-2025-40121
GCVE (VulDB): GCVE-100-332152
CERT Bund: WID-SEC-2025-2579 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 11/12/2025 13:33
Updated: 02/08/2026 01:03
Changes: 11/12/2025 13:33 (59), 11/13/2025 10:11 (7), 11/28/2025 21:00 (2), 12/18/2025 01:16 (1), 12/30/2025 13:54 (1), 02/08/2026 01:03 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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