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Review reviewHigh

CVE-2022-48789

Linux Linux, linux kernel

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.

CVSS
7.8
EPSS
0.66%
48.0% percentile
CISA KEV
Not listed
Published
2024.07.16
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.66%
Technical severityCVSS 7.8

Vulnerability overview

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 product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 3f2304f8c6d6ed97849057bd16fee99e434ca796 < 61a26ffd5ad3ece456d74c4c79f7b5e3f440a141, >= 3f2304f8c6d6ed97849057bd16fee99e434ca796 < e192184cf8bce8dd55d619f5611a2eaba996fa05, >= 3f2304f8c6d6ed97849057bd16fee99e434ca796 < 5e42fca37ccc76f39f73732661bd47254cad5982, >= 3f2304f8c6d6ed97849057bd16fee99e434ca796 < bb0d8fb35c4ff00a503c2c4dca4cce8d102a21c4, >= 3f2304f8c6d6ed97849057bd16fee99e434ca796 < ff9fc7ebf5c06de1ef72a69f9b1ab40af8b07f9e, >= 5.0, < 5.4.181, >= 5.5 < 5.10.102, >= 5.11 < 5.15.25, >= 5.16 < 5.16.11
Fixed versions
5.4.181, 5.10.102, 5.15.25, 5.16.11

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416