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
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: a2e2cc0dbb1121dfa875da1c04f3dff966fec162 , < c682fb70a7dfc25b848a4ff3a385b0471b470606 (git)
Affected: a2e2cc0dbb1121dfa875da1c04f3dff966fec162 , < a1a75f78a2937567946b1b756f82462874b5ca20 (git)
Affected: a2e2cc0dbb1121dfa875da1c04f3dff966fec162 , < 68a838b84effb7b57ba7d50b1863fc6ae35a54ce (git)
guessed Create a notification for this product.
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)
guessed Create a notification for this product.
Show details on NVD website
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            "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. Esto puede provocar dos problemas de condiciones de ejecuci\u00f3n. 1) Dicho evento puede ser descartado por qcom_mhi_qrtr_dl_callback() en la comprobaci\u00f3n: if (!qdev || mhi_res-\u0026gt;transaction_status) return; Porque dev_set_drvdata(\u0026amp;mhi_dev-\u0026gt;dev, qdev) puede no ejecutarse en este momento. En esta situaci\u00f3n, qrtr-ns no podr\u00e1 enumerar los servicios en el dispositivo. --------------------------------------------------------------- 2) Dicho evento puede ocurrir despu\u00e9s de dev_set_drvdata() y antes de qrtr_endpoint_register(). En este caso, el kernel entrar\u00e1 en p\u00e1nico al acceder al puntero incorrecto en qcom_mhi_qrtr_dl_callback(): rc = qrtr_endpoint_post(\u0026amp;qdev-\u0026gt;ep, mhi_res-\u0026gt;buf_addr, mhi_res-\u0026gt;bytes_xferd); Porque el endpoint a\u00fan no se ha creado. -------------------------------------------------------------- Por lo tanto, mueva mhi_prepare_for_transfer_autoqueue despu\u00e9s de la creaci\u00f3n del endpoint para solucionarlo."
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      "title": "SUSE CVE CVE-2022-50044",
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}



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