High severity · published Jul 4, 2025
CVE-2025-38201
netfilter: nft_set_pipapo: clamp maximum map bucket size to INT_MAX
7.8
CVSS
0.2%
EPSS
No
On KEV
Description
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nft_set_pipapo: clamp maximum map bucket size to INT_MAX
Otherwise, it is possible to hit WARN_ON_ONCE in __kvmalloc_node_noprof()
when resizing hashtable because __GFP_NOWARN is unset.
Similar to:
b541ba7d1f5a ("netfilter: conntrack: clamp maximum hashtable size to INT_MAX")
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
5.6 before 6.12.35; 6.13 before 6.15.4 · source: NVD
LI
Linux · Linux
3c4287f62044a90e73a561aa05fc46e62da173da before 1fe27f97944017a9d3c5af4d6d95282bff0f1147; 3c4287f62044a90e73a561aa05fc46e62da173da before 4abccfb61f422300be014b8e734c63344306f009; 3c4287f62044a90e73a561aa05fc46e62da173da before 80417057ac60dd80f4816eb426e4e4a5bf696534; 3c4287f62044a90e73a561aa05fc46e62da173da before df524a68d9021c1401965d610bb6e42ee5d9611e; 3c4287f62044a90e73a561aa05fc46e62da173da before 0ab3de047808f375a36cd345225572eb3366f3c6; 3c4287f62044a90e73a561aa05fc46e62da173da before d2768016f091f8a5264076b433fd7c3fabb6eb97; +2 more · source: vendor
SS
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.6; V3.1.5; V3.1.7; V3.1.6; V3.1.5; V3.1.7 · source: CISA
SS
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · Siemens
V3.1.6; V3.1.5; V3.1.7; V3.1.6; V3.1.5; V3.1.7 · source: CISA
SS
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.6; V3.1.5; V3.1.7 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-38201
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-38201
Patch
https://git.kernel.org/stable/c/0ab3de047808f375a36cd345225572eb3366f3c6
Patch
https://git.kernel.org/stable/c/1fe27f97944017a9d3c5af4d6d95282bff0f1147
Patch
https://git.kernel.org/stable/c/4abccfb61f422300be014b8e734c63344306f009
Patch
https://git.kernel.org/stable/c/80417057ac60dd80f4816eb426e4e4a5bf696534
Patch
https://git.kernel.org/stable/c/b85e3367a5716ed3662a4fe266525190d2af76df
Patch
https://git.kernel.org/stable/c/d2768016f091f8a5264076b433fd7c3fabb6eb97
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