Linux Kernel Fragnesia Privilege Escalation Vulnerability (CVE-2026-46300) Notice
ID: 120e2b63-175f-57a0-8ac0-75414c2d01bb
STIX ID: report--120e2b63-175f-57a0-8ac0-75414c2d01bb
Feed Name: Security Boulevard
Threat Score
**Executive Summary:** The report details CVE-2026-46300 (Fragnesia), a deterministic local Linux kernel privilege-escalation and container-escape vulnerability affecting many distributions (CVSS 7.8). A public PoC and disclosure exist, NSFOCUS reproduced the issue, and recommended mitigations include applying the upstream patch, unloading/disabling esp4/esp6/rxrpc modules, and using seccomp/namespace restrictions to limit exploitability.
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