CVE-2022-48789
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk48th percentile - higher than 48% of all known CVEs
Summary
In the Linux kernel, in the nvme-tcp driver, a possible use-after-free in transport error recovery work was fixed. The error recovery work must flush async_event_work before destroying the admin queue to prevent a race.
Risk Assessment
The vulnerability could lead to use-after-free, potentially causing system crashes or privilege escalation in environments using NVMe over TCP.
Recommendation
Apply the Linux kernel update containing the fix for nvme-tcp.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: nvme-tcp: fix possible use-after-free in transport error_recovery work While nvme_tcp_submit_async_event_work is checking the ctrl and queue state before preparing the AER command and scheduling io_work, in order to fully prevent a race where this check is not reliable the error recovery work must flush async_event_work before continuing to destroy the admin queue after setting the ctrl state to RESETTING such that there is no race .submit_async_event and the error recovery handler itself changing the ctrl state.