CVE-2023-53987 (GCVE-0-2023-53987)

Vulnerability from cvelistv5 – Published: 2025-12-24 10:55 – Updated: 2025-12-24 10:55
VLAI?
Title
ping: Fix potentail NULL deref for /proc/net/icmp.
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: dbca1596bbb08318f5e3b3b99f8ca0a0d3830a65 , < 5a08a32e624908890aa0a2eb442bb6a7669891a8 (git)
Affected: dbca1596bbb08318f5e3b3b99f8ca0a0d3830a65 , < 176cbb6da28f36506cc60a4bec4ab8df0c16713a (git)
Affected: dbca1596bbb08318f5e3b3b99f8ca0a0d3830a65 , < ab5fb73ffa01072b4d8031cc05801fa1cb653bee (git)
Affected: de3d723a3985f282a8c9e468d1e198616eb291c8 (git)
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    Linux Linux Affected: 6.0
Unaffected: 0 , < 6.0 (semver)
Unaffected: 6.1.24 , ≤ 6.1.* (semver)
Unaffected: 6.2.11 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
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