Astra Linux - уязвимость в linux-5.10

In the Linux kernel, the following vulnerabilities have been resolved: hugetlb, userfaultfd: fixed the issue of reservation restoration when an error occurs with userfaultfd. Currently, in the iscontinue case within hugetlbmcopyatomicpte, if we use “goto outreleaseunlock;“ in cases where idx =...

DEBIAN-CVE-2021-47214

In the Linux kernel, the following vulnerability has been resolved: hugetlb, userfaultfd: fix reservation restore on userfaultfd error Currently in the iscontinue case in hugetlbmcopyatomicpte, if we bail out using "goto outreleaseunlock;" in the cases where idx = size, or !hugeptenone, the code...

CVE-2021-47214 hugetlb, userfaultfd: fix reservation restore on userfaultfd error

In the Linux kernel, the following vulnerability has been resolved: hugetlb, userfaultfd: fix reservation restore on userfaultfd error Currently in the iscontinue case in hugetlbmcopyatomicpte, if we bail out using "goto outreleaseunlock;" in the cases where idx = size, or !hugeptenone, the code...

CVE-2021-47214

CVE-2021-47214 affects Linux kernel hugetlb/userfaultfd handling. The fix corrects reservation restoration on userfaultfd error in hugetlb_mcopy_atomic_pte() by treating the is_continue path like pagecache insertion and altering the new_pagecache_page flag (renamed to page_in_pagecache) so restor...