CVE-2026-43216

medium 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 6, 2026 (8 days ago)
Last Modified: May 6, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the Linux kernel's networking subsystem. Specifically, the skb_may_tx_timestamp() function can attempt to acquire a lock in an Interrupt Request (IRQ) context, which is an inappropriate execution environment for this operation. This can occur when certain network drivers process transmit timestamps from a dedicated interrupt handler. If the lock is already held by another process on the same CPU, this can lead to a system deadlock, resulting in a Denial of Service (DoS) for the affected system.

CWE

CWE-413

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