CVE intelligence

CVE-2026-99026

Vulnerability intelligence

Published Oct 23, 2026Sources checked Oct 27, 2026

N/ACVSS not listedScore unavailable

What this means

Review the available evidence

CVE-2026-99026. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Microsoft Security Response Center guidance

Vendor revision: Oct 26, 2026

Release Notes

CISA KEVNot listedBased on the latest collected catalog

EPSS0.2%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-99026?

In the Linux kernel, the following vulnerability has been resolved:

net: team: free skb when broadcast has no txable port

bc_transmit() sends the original skb through the last txable port. When no port is txable, it returns false without consuming the skb, but team_xmit() still returns NETDEV_TX_OK.

AF_PACKET sends then retain the skb and its socket write-memory charge.

A TX-enabled, link-down port keeps the broadcast transmit op installed. Carrier can stay up through a second link-up, TX-disabled port or be forced on by userspace.

Free the original skb on the no-port path while leaving the existing drop accounting intact.

Discovered by Sashiko during review of previous commit.

Source: NVD