CVE-2026-45977

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A race condition exists in the fbnic driver between the teardown path and the fw log write functions. The fw log is written within the fbnic fw log write() function, which is accessible via the mailbox handler fbnic fw msix intr(). However, fw log is freed before the IRQ/MBX teardown during cleanup, potentially leading to a data race where a freed or null variable is dereferenced. Additionally, an incorrect initialization order occurs because fw log is allocated after the MBX setup.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.