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).
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Feb 27, 2025 | Feb 27, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Feb 26, 2025 |
| Ubuntu | — | Upgrade linux-awsUpgrade linux-gcpUpgrade linux-raspiUpgrade linux-oracle-5.4Upgrade linuxUpgrade linux-gcp-4.15Upgrade linux-iotUpgrade linux-raspi-5.4Upgrade linux-bluefieldUpgrade linux-lowlatency-hwe-5.15Upgrade linux-ibm-5.4Upgrade linux-azure-4.15Upgrade linux-azure-fipsUpgrade linux-intel-iotg-5.15Upgrade linux-kvmUpgrade linux-realtimeUpgrade linux-aws-fipsUpgrade linux-hwe-5.4Upgrade linux-azureUpgrade linux-hweUpgrade linux-gcp-5.4Upgrade linux-lowlatencyUpgrade linux-hwe-5.15Upgrade linux-fipsUpgrade linux-oracleUpgrade linux-gcp-fipsUpgrade linux-intel-iotgUpgrade linux-gkeUpgrade linux-ibmUpgrade linux-aws-hweUpgrade linux-aws-5.4Upgrade linux-azure-5.15Upgrade linux-azure-5.4 | 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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