> CVE-2023-53987

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PUBLISHED
2025-12-24 11:15
MODIFIED
2025-12-24 11:15
EPSS (Prob. Exploit)
0.20%
Top 90.4%
DATA SOURCES:
NVD 🔗 2025-12-24 RED HAT 🔗 2025-12-28 CVE PROJECT 🔗 2026-01-19 FIRST EPSS 🔗 2026-11-08 OSV 🔗 2026-11-08

> DESCRIPTION

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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> RED HAT SEVERITY ASSESSMENT

THREAT SEVERITY
Important

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

ping: Fix potentail NULL deref for /proc/net/icmp.

AFFECTED PACKAGES:
Unknown / Unknown
16 versions affected
Linux / Kernel

> HISTORIQUE DES MODIFICATIONS

Première apparition
24/12/2025 11:15
Source: NVD
📊 ENRICHISSEMENT 19/01/2026 17:38
CVEPROJECT
Champ modifié: CVE Project
Ancienne valeur:
Non
Nouvelle valeur:
Oui
📊 ENRICHISSEMENT 28/12/2025 04:01
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
N/A
Nouvelle valeur:
{ "threat_severity": "Important", "severity_scale": null }
📊 ENRICHISSEMENT 28/12/2025 04:01
REDHAT
Champ modifié: Red Hat
Ancienne valeur:
Non
Nouvelle valeur:
Oui
Total des modifications: 3 Dernière mise à jour: 9 months ago

> REFERENCES

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