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CVE-2025-38472 is a race condition in the Linux kernel Netfilter nf_conntrack subsystem. Concurrent expiration, deletion, slab reuse, and confirmation can expose a partially initialized connection-tracking entry with IPS_CONFIRMED set before hash-table insertion. If chain-length or clash-resolution handling subsequently skips insertion, another CPU can treat the entry as expired and confirmed and attempt to unlink it using hash-list fields that still contain a cached tuple hash. This can crash the kernel in __nf_ct_delete_from_lists during connection-tracking garbage collection.
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A race condition in Linux kernel netfilter connection tracking can mark a partially initialized connection entry as confirmed before insertion into the hash table. Another CPU may then attempt to remove that entry using an invalid list pointer, causing a kernel crash and denial of service. The reference assigns a CVSS v3 base score of 5.5, with local access and low privileges required. The fix moves the confirmation-bit assignment after table insertion and adds memory-ordering protection and garbage-collection checks.
A race condition in the Linux kernel's netfilter connection-tracking subsystem can mark a partially initialized entry as confirmed before it is inserted into the hash table. Another CPU may then attempt to unlink the entry using invalid list pointers, causing a kernel crash and denial of service. The reference assigns a CVSS v3 score of 5.5, indicating local access, low privileges, and high availability impact. The fix moves confirmation after table insertion and adds memory-ordering safeguards.
A race condition in Linux kernel Netfilter connection tracking can cause deletion of a partially initialized entry that was never inserted into the hash table, resulting in a kernel crash. Premature assignment of IPS_CONFIRMED and memory-ordering issues enable the race. The reference rates the vulnerability CVSS v3 5.5, with local access, low privileges, and high availability impact.
Vulnerability addressed by the referenced AlmaLinux/TuxCare security update.
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Cross-references every affected SKU, including bundled OEM variants.
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