Linux Kernel up to 6.6.121/6.12.67/6.18.7/6.19-rc6 ALSA scarlett2_usb_get_config buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.6.121/6.12.67/6.18.7/6.19-rc6. It has been classified as critical. This affects the function scarlett2_usb_get_config of the component ALSA. This manipulation causes buffer overflow. This vulnerability is registered as CVE-2026-23078. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.6.121/6.12.67/6.18.7/6.19-rc6 and classified as critical. Affected by this vulnerability is the function scarlett2_usb_get_config of the component ALSA. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: ALSA: scarlett2: Fix buffer overflow in config retrieval The scarlett2_usb_get_config() function has a logic error in the endianness conversion code that can cause buffer overflows when count > 1. The code checks `if (size == 2)` where `size` is the total buffer size in bytes, then loops `count` times treating each element as u16 (2 bytes). This causes the loop to access `count * 2` bytes when the buffer only has `size` bytes allocated. Fix by checking the element size (config_item->size) instead of the total buffer size. This ensures the endianness conversion matches the actual element type.

It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2026-23078 since 01/13/2026. The exploitation appears to be easy. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/03/2026).

The vulnerability scanner Nessus provides a plugin with the ID 297919 (Linux Distros Unpatched Vulnerability : CVE-2026-23078), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.6.122, 6.12.68, 6.18.8 or 6.19-rc7 eliminates this vulnerability. Applying the patch 91a756d22f0482eac5bedb113c8922f90b254449/27049f50be9f5ae3a62d272128ce0b381cb26a24/31a3eba5c265a763260976674a22851e83128f6d/6f5c69f72e50d51be3a8c028ae7eda42c82902cb 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 (297919) and CERT Bund (WID-SEC-2026-0324). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Debian Linux
  • Google Cloud Platform
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • IBM QRadar SIEM
  • SUSE openSUSE
  • RESF Rocky Linux
  • Open Source Linux Kernel

Productinfo

Type

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.9
VulDB Meta Temp Score: 7.7

VulDB Base Score: 8.0
VulDB Temp Score: 7.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
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: 297919
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-23078

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.6.122/6.12.68/6.18.8/6.19-rc7
Patch: 91a756d22f0482eac5bedb113c8922f90b254449/27049f50be9f5ae3a62d272128ce0b381cb26a24/31a3eba5c265a763260976674a22851e83128f6d/6f5c69f72e50d51be3a8c028ae7eda42c82902cb

Timelineinfo

01/13/2026 CVE reserved
02/04/2026 +22 days Advisory disclosed
02/04/2026 +0 days VulDB entry created
05/03/2026 +88 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-23078 (🔒)
GCVE (CVE): GCVE-0-2026-23078
GCVE (VulDB): GCVE-100-344335
CERT Bund: WID-SEC-2026-0324 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 02/04/2026 18:24
Updated: 05/03/2026 08:24
Changes: 02/04/2026 18:24 (59), 02/06/2026 09:55 (2), 02/06/2026 10:08 (7), 03/18/2026 14:59 (12), 05/03/2026 08:24 (1)
Complete: 🔍
Cache ID: 216::103

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