CVE-2026-23083

In the Linux kernel, the following vulnerability has been resolved: fou: Don't allow 0 for FOU_ATTR_IPPROTO. fou_udp_recv() has the same problem mentioned in the previous patch. If FOU_ATTR_IPPROTO is set to 0, skb is not freed by fou_udp_recv() nor "resubmit"-ted in ip_protocol_deliver_rcu(). Let's forbid 0 for FOU_ATTR_IPPROTO.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/1cc98b8887cabb1808d2f4a37cd10a7be7574771	Patch
https://git.kernel.org/stable/c/611ef4bd9c73d9e6d87bed57a635ff1fdd8c91ea	Patch
https://git.kernel.org/stable/c/6e983789b7588ee59cbf303583546c043bad8e19	Patch
https://git.kernel.org/stable/c/7a9bc9e3f42391e4c187e099263cf7a1c4b69ff5	Patch
https://git.kernel.org/stable/c/9b75dff8446ec871030d8daf5a69e74f5fe8b956	Patch
https://git.kernel.org/stable/c/b7db31a52c3862a1a32202a273a4c32e7f5f4823	Patch
https://git.kernel.org/stable/c/c7498f9bc390479ccfad7c7f2332237ff4945b03	Patch
https://cert-portal.siemens.com/productcert/html/ssa-019113.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::::::::
	cpe:2.3:o:linux:linux_kernel:6.19:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.19:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.19:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.19:rc4::::::
	cpe:2.3:o:linux:linux_kernel:6.19:rc5::::::
	cpe:2.3:o:linux:linux_kernel:6.19:rc6::::::

History

No history.

Information

Published : 2026-02-04 17:16

Updated : 2026-07-14 13:18

NVD link : CVE-2026-23083

Mitre link : CVE-2026-23083

CVE.ORG link : CVE-2026-23083

JSON object : View

Products Affected

linux

linux_kernel

CWE

NVD-CWE-noinfo

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"unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}]}], "published": "2026-02-04T17:16:19.163", "references": [{"url": "https://git.kernel.org/stable/c/1cc98b8887cabb1808d2f4a37cd10a7be7574771", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/611ef4bd9c73d9e6d87bed57a635ff1fdd8c91ea", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6e983789b7588ee59cbf303583546c043bad8e19", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": 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resolved:\n\nfou: Don't allow 0 for FOU_ATTR_IPPROTO.\n\nfou_udp_recv() has the same problem mentioned in the previous\npatch.\n\nIf FOU_ATTR_IPPROTO is set to 0, skb is not freed by\nfou_udp_recv() nor \"resubmit\"-ted in ip_protocol_deliver_rcu().\n\nLet's forbid 0 for FOU_ATTR_IPPROTO."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nfou: No permitir 0 para FOU_ATTR_IPPROTO.\n\nfou_udp_recv() tiene el mismo problema mencionado en el parche anterior.\n\nSi FOU_ATTR_IPPROTO se establece en 0, skb no es liberado por fou_udp_recv() ni 'reenviado' en ip_protocol_deliver_rcu().\n\nProhibamos 0 para FOU_ATTR_IPPROTO."}], "lastModified": "2026-07-14T13:18:23.673", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C0E32AE9-6434-429F-8548-532124F03BA5", "versionEndExcluding": "5.10.249", "versionStartIncluding": "3.18"}, 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