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CVE-2022-50044 (GCVE-0-2022-50044)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:01 – Updated: 2026-05-11 19:11
VLAI
Title
net: qrtr: start MHI channel after endpoit creation
Summary
In the Linux kernel, the following vulnerability has been resolved: net: qrtr: start MHI channel after endpoit creation MHI channel may generates event/interrupt right after enabling. It may leads to 2 race conditions issues. 1) Such event may be dropped by qcom_mhi_qrtr_dl_callback() at check: if (!qdev || mhi_res->transaction_status) return; Because dev_set_drvdata(&mhi_dev->dev, qdev) may be not performed at this moment. In this situation qrtr-ns will be unable to enumerate services in device. --------------------------------------------------------------- 2) Such event may come at the moment after dev_set_drvdata() and before qrtr_endpoint_register(). In this case kernel will panic with accessing wrong pointer at qcom_mhi_qrtr_dl_callback(): rc = qrtr_endpoint_post(&qdev->ep, mhi_res->buf_addr, mhi_res->bytes_xferd); Because endpoint is not created yet. -------------------------------------------------------------- So move mhi_prepare_for_transfer_autoqueue after endpoint creation to fix it.
Severity
4.7 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: a2e2cc0dbb1121dfa875da1c04f3dff966fec162 , < c682fb70a7dfc25b848a4ff3a385b0471b470606 (git)
Affected: a2e2cc0dbb1121dfa875da1c04f3dff966fec162 , < a1a75f78a2937567946b1b756f82462874b5ca20 (git)
Affected: a2e2cc0dbb1121dfa875da1c04f3dff966fec162 , < 68a838b84effb7b57ba7d50b1863fc6ae35a54ce (git)
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Linux Linux Affected: 5.11
Unaffected: 0 , < 5.11 (semver)
Unaffected: 5.15.63 , ≤ 5.15.* (semver)
Unaffected: 5.19.4 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "net/qrtr/mhi.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: start MHI channel after endpoit creation\n\nMHI channel may generates event/interrupt right after enabling.\nIt may leads to 2 race conditions issues.\n\n1)\nSuch event may be dropped by qcom_mhi_qrtr_dl_callback() at check:\n\n\tif (!qdev || mhi_res-\u003etransaction_status)\n\t\treturn;\n\nBecause dev_set_drvdata(\u0026mhi_dev-\u003edev, qdev) may be not performed at\nthis moment. In this situation qrtr-ns will be unable to enumerate\nservices in device.\n---------------------------------------------------------------\n\n2)\nSuch event may come at the moment after dev_set_drvdata() and\nbefore qrtr_endpoint_register(). In this case kernel will panic with\naccessing wrong pointer at qcom_mhi_qrtr_dl_callback():\n\n\trc = qrtr_endpoint_post(\u0026qdev-\u003eep, mhi_res-\u003ebuf_addr,\n\t\t\t\tmhi_res-\u003ebytes_xferd);\n\nBecause endpoint is not created yet.\n--------------------------------------------------------------\nSo move mhi_prepare_for_transfer_autoqueue after endpoint creation\nto fix it."
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In this situation qrtr-ns will be unable to enumerate\\nservices in device.\\n---------------------------------------------------------------\\n\\n2)\\nSuch event may come at the moment after dev_set_drvdata() and\\nbefore qrtr_endpoint_register(). In this case kernel will panic with\\naccessing wrong pointer at qcom_mhi_qrtr_dl_callback():\\n\\n\\trc = qrtr_endpoint_post(\u0026qdev-\u003eep, mhi_res-\u003ebuf_addr,\\n\\t\\t\\t\\tmhi_res-\u003ebytes_xferd);\\n\\nBecause endpoint is not created yet.\\n--------------------------------------------------------------\\nSo move mhi_prepare_for_transfer_autoqueue after endpoint creation\\nto fix it.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: qrtr: iniciar canal MHI despu\u00e9s de la creaci\u00f3n del endpoint El canal MHI puede generar un evento/interrupci\u00f3n justo despu\u00e9s de habilitarse. 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      "cve": "CVE-2022-50044",
      "id": "CVE-2022-50044",
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      "title": "SUSE CVE CVE-2022-50044",
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}



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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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