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CVE-2022-49136

Bluetooth: hci_sync: Fix queuing commands when HCI_UNREGISTER is set

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: Fix queuing commands when HCI_UNREGISTER is set hci_cmd_sync_queue shall return an error if HCI_UNREGISTER flag has been set as that means hci_unregister_dev has been called so it will likely cause a uaf after the timeout as the hdev will be freed.

Timeline

  1. ID reserved

    By Linux

  2. Published

  3. · 18 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-2022-49136, by who scored it
Scored byCVSSScoreVector
LinuxCNA (assigner)3.1High7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA-ADPADP (enrichment)3.1High7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Analyzed3.1High7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
0.26% · top 83% of all CVEs (11 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.

Affected products

  • Linux · Linux

    • affected 6a98e3836fa2077b169f10a35c2ca9952d53f987 – < 1c69ef84a808676cceb69210addf5df45b741323
    • affected 6a98e3836fa2077b169f10a35c2ca9952d53f987 – < 0b94f2651f56b9e4aa5f012b0d7eb57308c773cf

  • Linux · Linux

    • affected 5.17
    • unaffected < 5.17
    • unaffected 5.17.3 – ≤ 5.17.*
    • unaffected 5.18 – ≤ *

References

2

Sources

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

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Record last updated .