kernel: mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory

A use-after-free memory bug exists in the linux kernel, such that unpoisonmemory tries to check the PGHWPoison flags of an uninitialized page. So VMBUGONPAGEPagePoisonedpage is triggered, leading to damage to the system availability and integrity...

CVE-2023-53709 ring-buffer: Handle race between rb_move_tail and rb_check_pages

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Handle race between rbmovetail and rbcheckpages It seems a data race between ringbuffer writing and integrity check. That is, RBFLAG of headpage is been updating, while at same time RBFLAG was cleared when doing...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-382775)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-382775 advisory. In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix kernel bug due to missing clearing of checked flag Syzbot reported that in directory...