CVEvulnerability

CVE-2025-21648

5.5 MEDIUM Published 2025-01-19 Modified 2026-10-15 Official page ↗
Status
Modified
Published
2025-01-19
Last modified
2026-10-15
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

Affected configurations

• linux linux kernel (>= 4.7.1 < 5.10.234) • linux linux kernel (>= 5.11 < 5.15.177) • linux linux kernel (>= 5.16 < 6.1.125) • linux linux kernel (>= 6.2 < 6.6.72) • linux linux kernel (>= 6.7 < 6.12.10) • linux linux kernel 4.7 • linux linux kernel 6.13

References