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CVE-2022-50044

net: qrtr: start MHI channel after endpoit creation

Medium4.7EPSS 0.14%
Published
Updated
Reserved
Assigned by
Linux

Description

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.

Timeline

  1. ID reserved

    By Linux

  2. Published

  3. · 11 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-2022-50044, by who scored it
Scored byCVSSScoreVector
NVDNVD · Analyzed3.1Medium4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.14% · top 97% of all CVEs (7 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.7.

Weakness

Affected products

  • Linux · Linux

    • affected a2e2cc0dbb1121dfa875da1c04f3dff966fec162 – < c682fb70a7dfc25b848a4ff3a385b0471b470606
    • affected a2e2cc0dbb1121dfa875da1c04f3dff966fec162 – < a1a75f78a2937567946b1b756f82462874b5ca20
    • affected a2e2cc0dbb1121dfa875da1c04f3dff966fec162 – < 68a838b84effb7b57ba7d50b1863fc6ae35a54ce

  • Linux · Linux

    • affected 5.11
    • unaffected < 5.11
    • unaffected 5.15.63 – ≤ 5.15.*
    • unaffected 5.19.4 – ≤ 5.19.*
    • unaffected 6.0 – ≤ *

References (3)

Sources

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

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Record last updated .