# CVE-2022-48790: linux: In the Linux kernel, the following vulnerability has been resolved:  nvme: fix a possible use-after-free in controlle...

CVE-2022-48790 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48790, released July 16, 2024. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-48790
- Priority: High
- CVSS: 7.0 (high)
- EPSS: 0.0079
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 16, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  nvme: fix a possible use-after-free in controller reset during load  Unlike .queue_rq, in .submit_async_event drivers may not check the ctrl readiness for AER submission. This may lead to a use-after-free condition that was observed with nvme-tcp.  The race condition may happen in the following scenario: 1. driver executes its reset_ctrl_work 2. -> nvme_stop_ctrl - flushes ctrl async_event_work 3. ctrl sends AEN which is received by the host, which in turn    schedules AEN handling 4. teardown admin queue (which releases the queue socket) 5. AEN processed, submits another AER, calling the driver to submit 6. driver attempts to send the cmd ==> use-after-free  In order to fix that, add ctrl state check to validate the ctrl is actually able to accept the AER submission.  This addresses the above race in controller resets because the driver during teardown should: 1. change ctrl state to RESETTING 2. flush async_event_work (as well as other async work elements)  So after 1,2, any other AER command will find the ctrl state to be RESETTING and bail out without submitting the AER.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.16.11-1 | [DEBIAN-CVE-2022-48790](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48790.md) | Jul 16, 2024 |
| Linux | linux Debian 13.5 (trixie) | 5.16.11-1 | [DEBIAN-CVE-2022-48790](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48790.md) | Jul 16, 2024 |
| Linux | linux Debian 14 | 5.16.11-1 | [DEBIAN-CVE-2022-48790](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48790.md) | Jul 16, 2024 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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