CVE-2023-52939
mm: memcg: fix NULL pointer in mem_cgroup_track_foreign_dirty_slowpath()
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mm: memcg: fix NULL pointer in mem_cgroup_track_foreign_dirty_slowpath()
In the Linux kernel, the following vulnerability has been resolved: mm: memcg: fix NULL pointer in mem_cgroup_track_foreign_dirty_slowpath() As commit 18365225f044 ("hwpoison, memcg: forcibly uncharge LRU pages"), hwpoison will forcibly uncharg a LRU hwpoisoned page, the folio_memcg could be NULl, then, mem_cgroup_track_foreign_dirty_slowpath() could occurs a NULL pointer dereference, let's do not record the foreign writebacks for folio memcg is null in mem_cgroup_track_foreign_dirty() to fix it.
Reserved 2024-08-21 | Published 2025-03-27 | Updated 2025-05-04 | Assigner Linuxgit.kernel.org/...c/b79ba5953f6fdc5559389ad415620bffc24f024b
git.kernel.org/...c/ac86f547ca1002aec2ef66b9e64d03f45bbbfbb9
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