CVE-2025-21648

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 v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/5552b4fd44be3393b930434a7845d8d95a2a3c33	Patch
https://git.kernel.org/stable/c/a965f7f0ea3ae61b9165bed619d5d6da02c75f80	Patch
https://git.kernel.org/stable/c/b1b2353d768f1b80cd7fe045a70adee576b9b338	Patch
https://git.kernel.org/stable/c/b541ba7d1f5a5b7b3e2e22dc9e40e18a7d6dbc13	Patch
https://git.kernel.org/stable/c/d5807dd1328bbc86e059c5de80d1bbee9d58ca3d	Patch
https://git.kernel.org/stable/c/f559357d035877b9d0dcd273e0ff83e18e1d46aa	Patch
https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:4.7:-::::::
	cpe:2.3:o:linux:linux_kernel:6.13:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.13:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.13:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.13:rc4::::::
	cpe:2.3:o:linux:linux_kernel:6.13:rc5::::::
	cpe:2.3:o:linux:linux_kernel:6.13:rc6::::::

History

No history.

Information

Published : 2025-01-19 11:15

Updated : 2025-11-03 21:19

NVD link : CVE-2025-21648

Mitre link : CVE-2025-21648

CVE.ORG link : CVE-2025-21648

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-Other

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Otherwise, it\nis possible to hit WARN_ON_ONCE in __kvmalloc_node_noprof() when\nresizing hashtable because __GFP_NOWARN is unset. See:\n\n 0708a0afe291 (\"mm: Consider __GFP_NOWARN flag for oversized kvmalloc() calls\")\n\nNote: hashtable resize is only possible from init_netns."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfilter: conntrack: fijar el tama\u00f1o m\u00e1ximo de la tabla hash a INT_MAX Utilice INT_MAX como tama\u00f1o m\u00e1ximo para la tabla hash de conntrack. De lo contrario, es posible alcanzar WARN_ON_ONCE en __kvmalloc_node_noprof() al cambiar el tama\u00f1o de la tabla hash porque __GFP_NOWARN no est\u00e1 configurado. Consulte: 0708a0afe291 (\"mm: Considere el indicador __GFP_NOWARN para llamadas kvmalloc() de gran tama\u00f1o\") Nota: el cambio de tama\u00f1o de la tabla hash solo es posible desde init_netns."}], "lastModified": "2025-11-03T21:19:01.033", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F092EC22-52AC-4AB2-AAD5-F65E6DB49A83", "versionEndExcluding": "5.10.234", "versionStartIncluding": "4.7.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "71A3AFDC-A3CA-454F-8917-E998BBDE36F8", "versionEndExcluding": "5.15.177", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9AFD566B-ECC6-46F1-92F7-12A615D5685F", "versionEndExcluding": "6.1.125", "versionStartIncluding": "5.16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "33E12097-C88A-45B4-9677-2A961A08DD3E", "versionEndExcluding": "6.6.72", "versionStartIncluding": "6.2"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "02D604F6-10D1-4F7B-A022-0888406A1121", "versionEndExcluding": "6.12.10", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:4.7:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2F890998-2B89-4DE8-BA87-5B3D9A5E8E11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "62567B3C-6CEE-46D0-BC2E-B3717FBF7D13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5A073481-106D-4B15-B4C7-FB0213B8E1D4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DE491969-75AE-4A6B-9A58-8FC5AF98798F"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "93C0660D-7FB8-4FBA-892A-B064BA71E49E"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "034C36A6-C481-41F3-AE9A-D116E5BE6895"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.13:rc6:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8AF9DC49-2085-4FFB-A7E3-73DFAFECC7F2"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}