CVE-2022-48789: nvme-tcp: fix possible use-after-free in transport error_recovery work

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-07-16 · updated 2026-08-04
Weakness: CWE-416

Description

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.

Affected products

Linux kernel: before 5.4.181; from 5.5 before 5.10.102; from 5.11 before 5.15.25; from 5.16 before 5.16.11 — fixed in 5.10.102, 5.15.25, 5.16.11, 5.4.181

How to fix

Upgrade to a fixed version: Linux kernel 5.10.102, 5.15.25, 5.16.11, 5.4.181. Check the vendor advisory for mitigations.

References

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