CVE-2026-98371

kernel: xfrm: iptfs: fix runt reassembly panic from short inner tot_len

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · October 6, 2026

Updated · October 8, 2026

Description

A flaw was found in the Linux kernel's IP Traffic Flow Security (IP-TFS) subsystem. Incomplete length validation when reassembling fragmented inner packets allows undersized packets to trigger an internal calculation underflow. A local user or remote attacker could exploit this vulnerability by sending specially crafted network packets, causing a kernel crash and resulting in a Denial of Service (DoS).

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-787 · Out-of-bounds Write