Medium severity5.5NVD Advisory· Published Feb 27, 2024· Updated Jun 17, 2026

CVE-2021-46926

Description

In the Linux kernel, the following vulnerability has been resolved:

ALSA: hda: intel-sdw-acpi: harden detection of controller

The existing code currently sets a pointer to an ACPI handle before checking that it's actually a SoundWire controller. This can lead to issues where the graph walk continues and eventually fails, but the pointer was set already.

This patch changes the logic so that the information provided to the caller is set when a controller is found.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

101

Linux/Kernelllm-fuzzy2 versions
(expand)+ 1 more
- (no CPE)
- (no CPE)range: 5.3
osv-coords99 versions
pkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-debug&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%20Micro%205.3 pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%20Micro%205.4 pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%20Micro%205.3 pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%20Micro%205.4 pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-rt_debug&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%20Micro%205.3 pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%20Micro%205.4 pkg:rpm/opensuse/kernel-source-azure&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-source-rt&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-syms-azure&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-syms-rt&distro=openSUSE%20Leap%2015.5 pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2015.5 pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSS pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5 pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP5 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSS pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.3 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.4 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.5 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Manager%20Proxy%204.3 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Manager%20Server%204.3 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP4 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP5 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSS pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP4 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP5 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.3 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.4 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.5 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP5 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP5 pkg:rpm/suse/kernel-default&distro=SUSE%20Manager%20Proxy%204.3 pkg:rpm/suse/kernel-default&distro=SUSE%20Manager%20Server%204.3 pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSS pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP5 pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4 pkg:rpm/suse/kernel-livepatch-SLE15-SP4_Update_25&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP4 pkg:rpm/suse/kernel-livepatch-SLE15-SP5-RT_Update_13&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP5 pkg:rpm/suse/kernel-livepatch-SLE15-SP5_Update_12&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP5 pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSS pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP5 pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4 pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Real%20Time%20Module%2015%20SP5 pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.3 pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.4 pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.5 pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP5 pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP5 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSS pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP5 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4 pkg:rpm/suse/kernel-source&distro=SUSE%20Manager%20Proxy%204.3 pkg:rpm/suse/kernel-source&distro=SUSE%20Manager%20Server%204.3 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.3 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.4 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.5 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP5 pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP5 pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSS pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP5 pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4 pkg:rpm/suse/kernel-syms&distro=SUSE%20Manager%20Proxy%204.3 pkg:rpm/suse/kernel-syms&distro=SUSE%20Manager%20Server%204.3 pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP5 pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5 pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Manager%20Server%204.3
< 5.14.21-150500.55.59.1+ 98 more
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150500.33.48.1
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150500.55.59.1.150500.6.25.7
- (no CPE)range: < 5.14.21-150400.24.116.1.150400.24.54.5
- (no CPE)range: < 5.14.21-150400.24.116.1.150400.24.54.5
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150500.13.47.1
- (no CPE)range: < 5.14.21-150500.13.47.1
- (no CPE)range: < 5.14.21-150400.15.76.1
- (no CPE)range: < 5.14.21-150400.15.76.1
- (no CPE)range: < 5.14.21-150500.33.48.1
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150500.13.47.1
- (no CPE)range: < 5.14.21-150500.33.48.1
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150500.13.47.1
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150500.33.48.1
- (no CPE)range: < 5.14.21-150400.24.116.1.150400.24.54.5
- (no CPE)range: < 5.14.21-150400.24.116.1.150400.24.54.5
- (no CPE)range: < 5.14.21-150400.24.116.1.150400.24.54.5
- (no CPE)range: < 5.14.21-150400.24.116.1.150400.24.54.5
- (no CPE)range: < 5.14.21-150500.55.59.1.150500.6.25.7
- (no CPE)range: < 5.14.21-150500.55.59.1.150500.6.25.7
- (no CPE)range: < 5.14.21-150400.24.116.1.150400.24.54.5
- (no CPE)range: < 5.14.21-150400.24.116.1.150400.24.54.5
- (no CPE)range: < 5.14.21-150400.24.116.1.150400.24.54.5
- (no CPE)range: < 5.14.21-150400.24.116.1.150400.24.54.5
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 1-150400.9.5.1
- (no CPE)range: < 1-150500.11.3.1
- (no CPE)range: < 1-150500.11.7.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150500.13.47.1
- (no CPE)range: < 5.14.21-150400.15.76.1
- (no CPE)range: < 5.14.21-150400.15.76.1
- (no CPE)range: < 5.14.21-150500.13.47.1
- (no CPE)range: < 5.14.21-150500.13.47.1
- (no CPE)range: < 5.14.21-150500.33.48.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150400.15.76.1
- (no CPE)range: < 5.14.21-150400.15.76.1
- (no CPE)range: < 5.14.21-150500.13.47.1
- (no CPE)range: < 5.14.21-150500.13.47.1
- (no CPE)range: < 5.14.21-150500.33.48.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150500.13.47.1
- (no CPE)range: < 5.14.21-150500.55.59.1
- (no CPE)range: < 5.14.21-150400.24.116.1
- (no CPE)range: < 5.14.21-150400.24.116.1

cvss	0.358
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000

CVE-2021-46926

Description

AI Insight

Affected products

Patches

Vulnerability mechanics

References

News mentions