CVE-2026-43440

A flaw was found in the Linux kernel's net/mana network driver. An error in the mana_gd_setup() function's cleanup process could result in a use-after-free vulnerability. This occurs because the service_wq workqueue pointer is not correctly nulled after destruction during setup errors, which could allow an attacker to potentially cause a system crash (denial of service) or execute arbitrary code.

Red Hat acknowledges the upstream Linux kernel correction for «net/mana» 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.