Unity Linux 20.1050e / 20.1070e Security Update: kernel (UTSA-2026-010824)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-010824 advisory. In the Linux kernel, the following vulnerability has been resolved: rcu/rcuscale: Stop kfreescalethread threads after unloading rcuscale Running the 'kfreercutest'...

kernel: smb: client: fix use-after-free in cifs_oplock_break

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix use-after-free in cifsoplockbreak A race condition can occur in cifsoplockbreak leading to a use-after-free of the cinode structure when unmounting: cifsoplockbreak cifsFileInfoputcfile cifsFileInfoputfinal...

UBUNTU-CVE-2023-53291

In the Linux kernel, the following vulnerability has been resolved: rcu/rcuscale: Stop kfreescalethread threads after unloading rcuscale Running the 'kfreercutest' test case 1 results in a splat 2. The root cause is the kfreescalethread threads continue running after unloading the rcuscale module...

CVE-2023-53291 rcu/rcuscale: Stop kfree_scale_thread thread(s) after unloading rcuscale

In the Linux kernel, the following vulnerability has been resolved: rcu/rcuscale: Stop kfreescalethread threads after unloading rcuscale Running the 'kfreercutest' test case 1 results in a splat 2. The root cause is the kfreescalethread threads continue running after unloading the rcuscale module...

PT-2025-33570

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: A race condition in cifs oplock break can lead to a use-after-free of the cinode structure during unmounting. This occurs when umount releases its reference to the superblock, triggeri...

CVE-2025-21809

Summary of CVE-2025-21809: In the Linux kernel, a race/lock order issue occurred in the RXRPC/AFS path. The afs address list held refs to rxrpc_peer objects and freed under RCU while a non-BH context could call into rxrpc_put_peer, risking deadlock when rxnet->peer_hash_lock (a spinlock) was h...