Detections
Analytics
CVE-2023-52939
medium
Description
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.
References
https://git.kernel.org/stable/c/b79ba5953f6fdc5559389ad415620bffc24f024b
https://git.kernel.org/stable/c/ac86f547ca1002aec2ef66b9e64d03f45bbbfbb9