CVE-2023-53987

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> ping: Fix potentail NULL deref for /proc/net/icmp.<br /> <br /> After commit dbca1596bbb0 ("ping: convert to RCU lookups, get rid<br /> of rwlock"), we use RCU for ping sockets, but we should use spinlock<br /> for /proc/net/icmp to avoid a potential NULL deref mentioned in<br /> the previous patch.<br /> <br /> Let&amp;#39;s go back to using spinlock there.<br /> <br /> Note we can convert ping sockets to use hlist instead of hlist_nulls<br /> because we do not use SLAB_TYPESAFE_BY_RCU for ping sockets.