CVE-2023-53987

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.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/176cbb6da28f36506cc60a4bec4ab8df0c16713a
https://git.kernel.org/stable/c/5a08a32e624908890aa0a2eb442bb6a7669891a8
https://git.kernel.org/stable/c/ab5fb73ffa01072b4d8031cc05801fa1cb653bee

Configurations

No configuration.

History

No history.

Information

Published : 2025-12-24 11:15

Updated : 2026-06-17 06:46

NVD link : CVE-2023-53987

Mitre link : CVE-2023-53987

CVE.ORG link : CVE-2023-53987

JSON object : View

Products Affected

No product.

CWE

No CWE.

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