DEBIAN-CVE-2025-21648

Advisory lineage Upstream: 1 Downstream: 3
Upstream
CVE-2025-21648
Published: 19 Jan 2025, 11:15
Last modified:15 Jun 2026, 19:05

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

19 Jan 2025, 11:15
Published
Vulnerability first disclosed
15 Jun 2026, 19:05
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Systems

  • debian•linux

    < 5.10.234-1 | < 6.1.128-1 | < 6.12.10-1 | < 6.12.10-1

  • debian•linux-6.1

    < 6.1.128-1~deb11u1

References (1)