CVE-2026-43496

low Red Hat
CVSS v3 Base Score
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Characteristics
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Published: May 21, 2026 (50 days ago)
Last Modified: May 21, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the Linux kernel's networking scheduler component. This vulnerability occurs when a specific queueing discipline (qdisc) configuration is used, where a parent qdisc attempts to retrieve a network packet from a child qdisc. An incorrect function call during this process can lead to a null-pointer dereference, resulting in a kernel panic. This issue could allow a local attacker to cause a denial of service (DoS) on the system.

CWE

CWE-628

Affected Products

Red Hat Enterprise Linux 10Red Hat Enterprise Linux 6Red Hat Enterprise Linux 7Red Hat Enterprise Linux 8Red Hat Enterprise Linux 9

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 lore.kernel.org