CVE-2026-46080
Description
A flaw was found in the Linux kernel's Oracle Cluster File System 2 (ocfs2) component. During direct I/O (DIO) write operations, specifically in the ocfs2_dio_end_io_write function, an issue with transaction splitting can lead to credit exhaustion in the Journaling Block Device 2 (JBD2) subsystem. This can be exploited by a local attacker to cause a denial of service (DoS) by preventing further journaling operations.
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory); DoS: Resource Consumption (Other)
When allocating resources without limits, an attacker could prevent other systems, applications, or processes from accessing the same type of resource. It can be easy for an attacker to consume many resources by rapidly making many requests or causing larger resources to be used than is needed.
Frequently Asked Questions
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