CVE-2026-43193

A flaw was found in the Linux kernel's Network File System Daemon (nfsd). A reference count leak in the nfsd_get_dir_deleg() function can lead to resource exhaustion. This vulnerability, if repeatedly triggered, may allow an attacker to cause a Denial of Service (DoS) by consuming available system resources.

Red Hat acknowledges the upstream Linux kernel correction for «nfsd» as described in COMMENT_ZERO. Fixes are delivered through standard kernel errata for supported products. Operational exposure depends on whether this subsystem or driver is active in your configuration.

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.