CVE-2025-21648 - "Linux Netfilter Conntrack INT_MAXHashtable Vulnerability"

CVE ID : CVE-2025-21648
Published : Jan. 19, 2025, 11:15 a.m. | 24 minutes ago
Description : In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: clamp maximum hashtable size to INT_MAX Use INT_MAX as maximum size for the conntrack hashtable. Otherwise, it is possible to hit WARN_ON_ONCE in __kvmalloc_node_noprof() when resizing hashtable because __GFP_NOWARN is unset. See: 0708a0afe291 ("mm: Consider __GFP_NOWARN flag for oversized kvmalloc() calls") Note: hashtable resize is only possible from init_netns.
Severity: 0.0 | NA
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