CVE-2026-90078

kernel: net/sched: act_skbmod: fix length calculations and avoid invalid header warnings

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · September 17, 2026

Updated · October 13, 2026

Description

A flaw was found in the Linux kernel's network scheduler component, act_skbmod. Incorrect length calculations when processing network packets can lead to an underflowed length value or cause the system to drop valid short packets. This vulnerability could allow a remote attacker to cause a Denial of Service (DoS) by sending specially crafted network traffic, disrupting network communication.

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-191 · Integer Underflow (Wrap or Wraparound)