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.
History

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

Type Values Removed Values Added
First Time appeared Linux
Linux kernel
Vendors & Products Linux
Linux kernel

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


cve-icon MITRE

No data.

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

Severity : Important

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

Links: CVE-2026-46300 - Bugzilla