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OpenAdvisories
High · 7.8 CVE-2022-49288 EUVD-2022-54938GHSA-87qr-3hp3-x583

ALSA: pcm: Fix races among concurrent prealloc proc writes

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-5.19 Package: linux-aws-5.3 Package: linux-aws-5.4 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-fips Package: linux-aws-hwe Package: linux-azure Package: linux-azure-4.15 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-5.4 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-azure-fips Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-4.15 Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.4 Package: linux-gcp-5.8 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gcp-fips 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-5.4 Package: linux-hwe-5.8 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.4 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-iot 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-lts-xenial 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-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 Package: linux-oracle-6.5 Package: linux-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-riscv Package: linux-riscv-5.11 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 Package: linux-vmware Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

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

ALSA: pcm: Fix races among concurrent prealloc proc writes

We have no protection against concurrent PCM buffer preallocation
changes via proc files, and it may potentially lead to UAF or some
weird problem. This patch applies the PCM open_mutex to the proc
write operation for avoiding the racy proc writes and the PCM stream
open (and further operations).

Affected products

VendorProductAffectedFixed
Linux Linux 2.6.12 4.14.279

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 5.17.3-1 —
Debian 13 linux 5.17.3-1 —
Debian 12 linux 5.17.3-1 —

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
Ubuntu 24.04 LTS linux-raspi-realtime No fix yet —
Ubuntu 22.04 LTS linux +1 5.15.0-37.39 —
Ubuntu 22.04 LTS linux-aws 5.15.0-1011.14 —
Ubuntu 22.04 LTS linux-azure 5.15.0-1010.12 —
Ubuntu 22.04 LTS linux-gcp 5.15.0-1008.12 —
Ubuntu 22.04 LTS linux-gke 5.15.0-1008.10 —
Ubuntu 22.04 LTS linux-ibm 5.15.0-1007.8 —
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1008.11 —
Ubuntu 22.04 LTS linux-kvm 5.15.0-1010.11 —
Ubuntu 22.04 LTS linux-oracle 5.15.0-1009.12 —
Ubuntu 22.04 LTS linux-raspi 5.15.0-1011.13 —
Ubuntu 22.04 LTS linux-riscv +32 No fix yet —
Ubuntu 20.04 LTS linux 5.4.0-124.140 —
Ubuntu 20.04 LTS linux-aws 5.4.0-1083.90 —
Ubuntu 20.04 LTS linux-azure 5.4.0-1089.94 —
Ubuntu 20.04 LTS linux-azure-5.15 5.15.0-1008.9~20.04.1 —
Ubuntu 20.04 LTS linux-bluefield 5.4.0-1044.49 —
Ubuntu 20.04 LTS linux-gcp 5.4.0-1086.94 —
Ubuntu 20.04 LTS linux-gke +28 No fix yet —
Ubuntu 20.04 LTS linux-hwe-5.15 5.15.0-41.44~20.04.1 —
Ubuntu 20.04 LTS linux-ibm 5.4.0-1031.35 —
Ubuntu 20.04 LTS linux-intel-iotg-5.15 5.15.0-1008.11~20.04.1 —
Ubuntu 20.04 LTS linux-iot 5.4.0-1004.6 —
Ubuntu 20.04 LTS linux-kvm 5.4.0-1073.78 —
Ubuntu 20.04 LTS linux-lowlatency-hwe-5.15 5.15.0-42.45~20.04.1 —
Ubuntu 20.04 LTS linux-oracle 5.4.0-1081.89 —
Ubuntu 20.04 LTS linux-raspi 5.4.0-1068.78 —
Ubuntu 18.04 LTS linux 4.15.0-191.202 —
Ubuntu 18.04 LTS linux-aws 4.15.0-1139.150 —
Ubuntu 18.04 LTS linux-aws-5.4 5.4.0-1083.90~18.04.1 —
Ubuntu 18.04 LTS linux-azure-4.15 4.15.0-1149.164 —
Ubuntu 18.04 LTS linux-azure-5.4 5.4.0-1089.94~18.04.1 —
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Ubuntu 18.04 LTS linux-gcp-4.15 4.15.0-1134.150 —
Ubuntu 18.04 LTS linux-gcp-5.4 5.4.0-1086.94~18.04.1 —
Ubuntu 18.04 LTS linux-hwe-5.4 5.4.0-124.140~18.04.1 —
Ubuntu 18.04 LTS linux-ibm-5.4 5.4.0-1031.35~18.04.1 —
Ubuntu 18.04 LTS linux-kvm 4.15.0-1125.130 —
Ubuntu 18.04 LTS linux-oracle 4.15.0-1104.115 —
Ubuntu 18.04 LTS linux-oracle-5.4 5.4.0-1081.89~18.04.1 —
Ubuntu 18.04 LTS linux-raspi-5.4 5.4.0-1068.78~18.04.1 —
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Show 9 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1014.14 —
Ubuntu Pro FIPS 20.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 18.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 16.04 LTS linux-fips No fix yet —
Ubuntu Pro FIPS-updates 20.04 LTS linux-aws-fips 5.4.0-1083.90+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1089.94+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips 5.4.0-1059.67 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1086.94+fips1 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-aws-fips 4.15.0-2078.83 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-azure-fips 4.15.0-2059.65 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips 4.15.0-1096.107 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-gcp-fips 4.15.0-2043.48 —
Ubuntu Pro FIPS-updates 16.04 LTS linux-fips No fix yet —
Ubuntu Pro 16.04 LTS linux +2 No fix yet —
Ubuntu Pro 16.04 LTS linux-aws-hwe 4.15.0-1139.150~16.04.1 —
Ubuntu Pro 16.04 LTS linux-azure 4.15.0-1149.164~16.04.1 —
Ubuntu Pro 16.04 LTS linux-gcp 4.15.0-1134.150~16.04.2 —
Ubuntu Pro 16.04 LTS linux-hwe 4.15.0-191.202~16.04.1 —
Ubuntu Pro 16.04 LTS linux-oracle 4.15.0-1104.115~16.04.1 —
Ubuntu Pro 14.04 LTS linux +2 No fix yet —
Ubuntu Pro 14.04 LTS linux-azure 4.15.0-1149.164~14.04.1 —

Red Hat

Security tracker ↗
ReleasePackageFixed inAdvisory
RHEL 9 perf +29 5.14.0-162.6.1.el9_1 RHSA-2022:8267
RHEL 8 perf +26 4.18.0-425.3.1.el8 RHSA-2022:7683

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
SLES 12 SP5 kernel-syms +2 4.12.14-122.255.1 SUSE-SU-2025:1293-1
SLES 11 SP4 kernel-ec2 +6 3.0.101-108.180.1 SUSE-SU-2026:0385-1, SUSE-SU-2025:0983-1
Show 18 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 Live Patching 12 SP5 kernel-default 4.12.14-122.255.1 SUSE-SU-2025:1293-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_67 1-8.5.1 SUSE-SU-2025:1293-1
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 11

References