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In the Linux kernel, the following vulnerability has been resolved:
ALSA: pcm: Fix races among concurrent hw_params and hw_free calls
Currently we have neither proper check nor protection against the concurrent calls of PCM hw_params and hw_free ioctls, which may result in a UAF. Since the existing PCM stream lock can't be used for protecting the whole ioctl operations, we need a new mutex to protect those racy calls.
This patch introduced a new mutex, runtime->buffer_mutex, and applies it to both hw_params and hw_free ioctl code paths. Along with it, the both functions are slightly modified (the mmap_count check is moved into the state-check block) for code simplicity.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-tools-debuginfoUpgrade perfUpgrade kernel-debuginfoUpgrade kernel-toolsUpgrade perf-debuginfoUpgrade kernel-develUpgrade kernel-tools-develUpgrade kernel-debuginfo-common-aarch64Upgrade bpftoolUpgrade bpftool-debuginfoUpgrade kernel-headersUpgrade kernel-debuginfo-common-x86_64Upgrade kernelUpgrade kernel-livepatch-4.14.281-212.502Upgrade python-perfUpgrade kernel-livepatch-5.10.109-104.500Upgrade python-perf-debuginfo | Mar 14, 2025 | Feb 26, 2025 |
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Feb 26, 2025 |
| Ubuntu | — | Upgrade linux-gcp-5.4Upgrade linux-gkeUpgrade linux-azure-fipsUpgrade linux-raspi-5.4Upgrade linux-ibm-5.4Upgrade linux-lowlatency-hwe-5.15Upgrade linux-aws-5.4Upgrade linux-gcpUpgrade linux-bluefieldUpgrade linux-oracle-5.4Upgrade linux-awsUpgrade linuxUpgrade linux-aws-hweUpgrade linux-lowlatencyUpgrade linux-hwe-5.15Upgrade linux-fipsUpgrade linux-gcp-fipsUpgrade linux-realtimeUpgrade linux-iotUpgrade linux-intel-iotgUpgrade linux-kvmUpgrade linux-gcp-4.15Upgrade linux-aws-fipsUpgrade linux-raspiUpgrade linux-azureUpgrade linux-hwe-5.4Upgrade linux-azure-5.15Upgrade linux-azure-5.4Upgrade linux-ibmUpgrade linux-azure-4.15Upgrade linux-oracleUpgrade linux-hweUpgrade linux-intel-iotg-5.15 | Mar 3, 2025 | Feb 26, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Feb 26, 2025 |
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