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CVE-2022-49306usb: dwc3: host: Stop setting the ACPI companion

Description

In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: host: Stop setting the ACPI companion It is no longer needed. The sysdev pointer is now used when assigning the ACPI companions to the xHCI ports and USB devices. Assigning the ACPI companion here resulted in the fwnode->secondary pointer to be replaced also for the parent dwc3 device since the primary fwnode (the ACPI companion) was shared. That was unintentional and it created potential side effects like resource leaks.

Timeline

  1. ID reserved

    By Linux

  2. Published

  3. · 15 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2022-49306, by who scored it
Scored byCVSSScoreVector
NVDNVD · Analyzed3.1Medium5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.26% · top 82% of all CVEs (13 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.

Affected products

  • Linux · Linux

    • affected 11c39809070fc0eb3aacb0d9ee71cd3678144f66 – < d7f35934f7ab67bfd9adabc84207e59da9c19108
    • affected 11c39809070fc0eb3aacb0d9ee71cd3678144f66 – < 9c185fde906a48368bd2d2a8c17d4b6fb3d670af
    • affected 11c39809070fc0eb3aacb0d9ee71cd3678144f66 – < 7fd069d65da2e20b1caec3b7bcf9dfbe28c04bb2

  • Linux · Linux

    • affected 5.7
    • unaffected < 5.7
    • unaffected 5.17.15 – ≤ 5.17.*
    • unaffected 5.18.4 – ≤ 5.18.*
    • unaffected 5.19 – ≤ *

References

References3

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .