CVE-2023-53987
ping: Fix potentail NULL deref for /proc/net/icmp.
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: ping: Fix potentail NULL deref for /proc/net/icmp. After commit dbca1596bbb0 ("ping: convert to RCU lookups, get rid of rwlock"), we use RCU for ping sockets, but we should use spinlock for /proc/net/icmp to avoid a potential NULL deref mentioned in the previous patch. Let's go back to using spinlock there. Note we can convert ping sockets to use hlist instead of hlist_nulls because we do not use SLAB_TYPESAFE_BY_RCU for ping sockets.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Dec 24, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
dbca1596bbb08318f5e3b3b99f8ca0a0d3830a65 < 5a08a32e624908890aa0a2eb442bb6a7669891a8 dbca1596bbb08318f5e3b3b99f8ca0a0d3830a65 < 176cbb6da28f36506cc60a4bec4ab8df0c16713a dbca1596bbb08318f5e3b3b99f8ca0a0d3830a65 < ab5fb73ffa01072b4d8031cc05801fa1cb653bee de3d723a3985f282a8c9e468d1e198616eb291c8
Linux / Linux
6.0