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Medium · 5.5 CVE-2022-49498 EUVD-2022-54731GHSA-97v8-9w8c-8wvm

ALSA: pcm: Check for null pointer of pointer substream before dereferencing it

Published Feb 26, 2025 · Updated May 11, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.15 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-azure Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.15 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.8 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-gcp Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.15 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.8 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.15 Package: linux-hwe-5.19 Package: linux-hwe-5.8 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-edge Package: linux-ibm Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-kvm Package: linux-lowlatency Package: linux-lowlatency-hwe-5.15 Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-nvidia Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oem-6.5 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.15 Package: linux-oracle-5.3 Package: linux-oracle-5.8 Package: linux-oracle-6.5 Package: linux-raspi Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.15 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.5 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

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

ALSA: pcm: Check for null pointer of pointer substream before dereferencing it

Pointer substream is being dereferenced on the assignment of pointer card
before substream is being null checked with the macro PCM_RUNTIME_CHECK.
Although PCM_RUNTIME_CHECK calls BUG_ON, it still is useful to perform the
the pointer check before card is assigned.

Affected products

VendorProductAffectedFixed
Linux Linux 5.6 5.10.121

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 14 linux 5.18.5-1 —
Debian 13 linux 5.18.5-1 —
Debian 12 linux 5.18.5-1 —

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
Ubuntu 24.04 LTS linux-raspi-realtime No fix yet —
Ubuntu 22.04 LTS linux 5.15.0-47.51 —
Ubuntu 22.04 LTS linux-aws 5.15.0-1019.23 —
Ubuntu 22.04 LTS linux-azure 5.15.0-1019.24 —
Ubuntu 22.04 LTS linux-gcp 5.15.0-1017.23 —
Ubuntu 22.04 LTS linux-gke 5.15.0-1015.18 —
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1002.4 —
Ubuntu 22.04 LTS linux-ibm 5.15.0-1013.15 —
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1015.20 —
Ubuntu 22.04 LTS linux-kvm 5.15.0-1017.21 —
Ubuntu 22.04 LTS linux-lowlatency 5.15.0-47.53 —
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1007.7 —
Ubuntu 22.04 LTS linux-oracle 5.15.0-1017.22 —
Ubuntu 22.04 LTS linux-raspi 5.15.0-1014.16 —
Ubuntu 22.04 LTS linux-riscv +32 No fix yet —
Ubuntu 20.04 LTS linux-aws-5.15 5.15.0-1019.23~20.04.1 —
Ubuntu 20.04 LTS linux-azure-5.15 5.15.0-1019.24~20.04.1 —
Ubuntu 20.04 LTS linux-gcp-5.15 5.15.0-1017.23~20.04.2 —
Ubuntu 20.04 LTS linux-gke +28 No fix yet —
Ubuntu 20.04 LTS linux-hwe-5.15 +1 5.15.0-48.54~20.04.1 —
Ubuntu 20.04 LTS linux-intel-iotg-5.15 5.15.0-1015.20~20.04.2 —
Ubuntu 20.04 LTS linux-oracle-5.15 5.15.0-1017.22~20.04.1 —
Ubuntu 20.04 LTS linux-riscv-5.15 5.15.0-1018.21~20.04.1 —
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1020.20 —

SUSE

Security tracker ↗
ReleasePackageFixed inAdvisory
SLES 15 SP5 kernel-64kb +6 5.14.21-150500.55.100.1 SUSE-SU-2025:1241-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.100.1.150500.6.47.1 SUSE-SU-2025:1241-1
SLES 15 SP4 kernel-64kb +6 5.14.21-150400.24.158.1 SUSE-SU-2025:1027-1
SLES 15 SP4 kernel-default-base 5.14.21-150400.24.158.1.150400.24.78.1 SUSE-SU-2025:1027-1
SLES 15 SP3 kernel-64kb +7 5.3.18-150300.59.201.1 SUSE-SU-2025:1263-1
SLES 15 SP3 kernel-default-base 5.3.18-150300.59.201.1.150300.18.120.1 SUSE-SU-2025:1263-1
Show 17 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 15 SP5 kernel-default-base 5.14.21-150500.55.100.1.150500.6.47.1 SUSE-SU-2025:1241-1
SLES for SAP 15 SP5 kernel-docs +4 5.14.21-150500.55.100.1 SUSE-SU-2025:1241-1
SLES for SAP 15 SP4 kernel-default-base 5.14.21-150400.24.158.1.150400.24.78.1 SUSE-SU-2025:1027-1
SLES for SAP 15 SP4 kernel-docs +4 5.14.21-150400.24.158.1 SUSE-SU-2025:1027-1
SLES for SAP 15 SP3 kernel-default-base 5.3.18-150300.59.201.1.150300.18.120.1 SUSE-SU-2025:1263-1
SLES for SAP 15 SP3 kernel-docs +5 5.3.18-150300.59.201.1 SUSE-SU-2025:1263-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.100.1.150500.6.47.1 SUSE-SU-2025:1241-1
SLE Micro 5.5 kernel-rt +1 5.14.21-150500.13.91.1 SUSE-SU-2025:1176-1
SLE Micro 5.5 kernel-source +1 5.14.21-150500.55.100.1 SUSE-SU-2025:1241-1
SLE Micro 5.4 kernel-default 5.14.21-150400.24.158.1 SUSE-SU-2025:1027-1
SLE Micro 5.4 kernel-default-base 5.14.21-150400.24.158.1.150400.24.78.1 SUSE-SU-2025:1027-1
SLE Micro 5.4 kernel-rt +1 5.14.21-150400.15.115.1 SUSE-SU-2025:1183-1
SLE Micro 5.3 kernel-default 5.14.21-150400.24.158.1 SUSE-SU-2025:1027-1
SLE Micro 5.3 kernel-default-base 5.14.21-150400.24.158.1.150400.24.78.1 SUSE-SU-2025:1027-1
SLE Micro 5.3 kernel-rt +1 5.14.21-150400.15.115.1 SUSE-SU-2025:1183-1
SLE Micro 5.2 kernel-default 5.3.18-150300.59.201.1 SUSE-SU-2025:1263-1
SLE Micro 5.2 kernel-default-base 5.3.18-150300.59.201.1.150300.18.120.1 SUSE-SU-2025:1263-1
SLE Micro 5.2 kernel-rt +1 5.3.18-150300.205.1 SUSE-SU-2025:1194-1
SLE Micro 5.1 kernel-default 5.3.18-150300.59.201.1 SUSE-SU-2025:1263-1
SLE Micro 5.1 kernel-default-base 5.3.18-150300.59.201.1.150300.18.120.1 SUSE-SU-2025:1263-1
SLE Micro 5.1 kernel-rt +1 5.3.18-150300.205.1 SUSE-SU-2025:1194-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.100.1 SUSE-SU-2025:1241-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_25 1-150500.11.3.1 SUSE-SU-2025:1241-1
SLE Live Patching 15 SP4 kernel-default 5.14.21-150400.24.158.1 SUSE-SU-2025:1027-1
SLE Live Patching 15 SP4 kernel-livepatch-SLE15-SP4_Update_38 1-150400.9.3.1 SUSE-SU-2025:1027-1
SLE Live Patching 15 SP3 kernel-default 5.3.18-150300.59.201.1 SUSE-SU-2025:1263-1
SLE Live Patching 15 SP3 kernel-livepatch-SLE15-SP3_Update_56 1-150300.7.3.1 SUSE-SU-2025:1263-1
SLE HPC 15 SP5 kernel-64kb +5 5.14.21-150500.55.100.1 SUSE-SU-2025:1241-1
SLE HPC 15 SP5 kernel-default-base 5.14.21-150500.55.100.1.150500.6.47.1 SUSE-SU-2025:1241-1
SLE HPC 15 SP4 kernel-64kb +5 5.14.21-150400.24.158.1 SUSE-SU-2025:1027-1
SLE HPC 15 SP4 kernel-default-base 5.14.21-150400.24.158.1.150400.24.78.1 SUSE-SU-2025:1027-1
SLE HPC 15 SP3 kernel-64kb +6 5.3.18-150300.59.201.1 SUSE-SU-2025:1263-1
SLE HPC 15 SP3 kernel-default-base 5.3.18-150300.59.201.1.150300.18.120.1 SUSE-SU-2025:1263-1
SUSE Manager Server 4.3 kernel-default-base 5.14.21-150400.24.158.1.150400.24.78.1 SUSE-SU-2025:1027-1
SUSE Manager Server 4.3 kernel-syms +3 5.14.21-150400.24.158.1 SUSE-SU-2025:1027-1
SUSE Manager Proxy 4.3 kernel-default-base 5.14.21-150400.24.158.1.150400.24.78.1 SUSE-SU-2025:1027-1
SUSE Manager Proxy 4.3 kernel-syms +2 5.14.21-150400.24.158.1 SUSE-SU-2025:1027-1
SUSE Enterprise Storage 7.1 kernel-64kb +6 5.3.18-150300.59.201.1 SUSE-SU-2025:1263-1
SUSE Enterprise Storage 7.1 kernel-default-base 5.3.18-150300.59.201.1.150300.18.120.1 SUSE-SU-2025:1263-1

Advisories 6

References