Linux Kernel up to 6.19.8 rt1011 rt1011_recv_spk_mode_put null pointer dereference

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5.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.19.8. Affected by this vulnerability is the function rt1011_recv_spk_mode_put of the component rt1011. The manipulation leads to null pointer dereference. This vulnerability is traded as CVE-2026-43478. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.19.8. This issue affects the function rt1011_recv_spk_mode_put of the component rt1011. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: ASoC: codecs: rt1011: Use component to get the dapm context in spk_mode_put The correct helper to use in rt1011_recv_spk_mode_put() to retrieve the DAPM context is snd_soc_component_to_dapm(), from kcontrol we will receive NULL pointer.

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2026-43478 since 05/01/2026. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 6.19.9 eliminates this vulnerability. Applying the patch b10b2b15b45923ff2807eeb034d91a39b0a3e690/30e4b2290cc2a8d1b9ddb9dcb9c981df1f2a7399 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-2026-1531). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • SUSE Linux
  • Oracle Linux
  • Open Source Linux Kernel
  • Ubuntu Linux

Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

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

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.19.9
Patch: b10b2b15b45923ff2807eeb034d91a39b0a3e690/30e4b2290cc2a8d1b9ddb9dcb9c981df1f2a7399

Timelineinfo

05/01/2026 CVE reserved
05/13/2026 +12 days Advisory disclosed
05/13/2026 +0 days VulDB entry created
07/23/2026 +70 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-43478 (🔒)
GCVE (CVE): GCVE-0-2026-43478
GCVE (VulDB): GCVE-100-363539
CERT Bund: WID-SEC-2026-1531 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 05/13/2026 17:36
Updated: 07/23/2026 01:29
Changes: 05/13/2026 17:36 (59), 05/17/2026 17:19 (7), 06/26/2026 23:07 (10), 07/23/2026 01:29 (1)
Complete: 🔍
Cache ID: 216::103

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