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CVE-2026-46300

high

Description

Debian Linux - linux - None Red Hat Enterprise Linux - kernel: "Fragnesia" is a variant of Dirty Frag vulnerability in the ESP/XFRM leading to Local Privilege Escalation (LPE) vulnerability in the Linux kernel Ubuntu Linux - Fragnesia linux kernel local privilege escalation issue

From the Tenable Blog

CVE-2026-46300 (Fragnesia): Linux Kernel ESP-in-TCP LPE FAQ | Tenable®
CVE-2026-46300 (Fragnesia): Linux Kernel ESP-in-TCP LPE FAQ | Tenable®

Published: 2026-05-14

CVE-2026-46300 (Fragnesia) is a Linux kernel privilege escalation in the XFRM ESP-in-TCP subsystem. Public PoC, no race condition. Dirty Frag patches do not fix it.

References

https://thehackernews.com/2026/05/new-fragnesia-linux-kernel-lpe-grants.html

https://securityaffairs.com/192145/uncategorized/linux-kernel-bug-fragnesia-allows-local-root-access-attacks.html

https://aws.amazon.com/security/security-bulletins/rss/2026-030-aws/

https://aws.amazon.com/security/security-bulletins/rss/2026-029-aws/

Details

Source: Mitre, NVD

Named Vulnerability: Fragnesia

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

Vulnerability Watch

Tenable Research has classified this CVE under the following Vulnerability Watch classification, which includes active and historical (inactive) classifications. You can learn more about these classifications on our blog.

Vulnerability of Interest