A flaw was found in the Linux kernel's XFRM ESP-in-TCP subsystem. This vulnerability, known as Fragnesia, allows a local attacker to achieve arbitrary byte writes into the kernel page cache of read-only files.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

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Project Subscriptions

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://nvd.nist.gov/vuln/detail/CVE-2026-46300 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-46300 cve-icon
History

Thu, 14 May 2026 12:15:00 +0000

Type Values Removed Values Added
Description A flaw was found in the Linux kernel's XFRM ESP-in-TCP subsystem. This vulnerability, known as Fragnesia, allows a local attacker to achieve arbitrary byte writes into the kernel page cache of read-only files.
Title kernel: "Fragnesia" is a variant of Dirty Frag vulnerability in the ESP/XFRM leading to Local Privilege Escalation (LPE) vulnerability in the Linux kernel
Weaknesses CWE-123
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Important

Projects

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cve-icon MITRE

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cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

Severity : Important

Publid Date: 2026-05-13T12:00:00Z

Links: CVE-2026-46300 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-05-14T13:30:06Z

Weaknesses