github - ghsa-c4q6-cxg2-pxc8

ghsa-c4q6-cxg2-pxc8

Vulnerability from github

Published

2024-02-27 21:31

Modified

2025-01-08 18:30

Severity ?

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

In the Linux kernel, the following vulnerability has been resolved:

bus: mhi: core: Fix invalid error returning in mhi_queue

mhi_queue returns an error when the doorbell is not accessible in the current state. This can happen when the device is in non M0 state, like M3, and needs to be waken-up prior ringing the DB. This case is managed earlier by triggering an asynchronous M3 exit via controller resume/suspend callbacks, that in turn will cause M0 transition and DB update.

So, since it's not an error but just delaying of doorbell update, there is no reason to return an error.

This also fixes a use after free error for skb case, indeed a caller queuing skb will try to free the skb if the queueing fails, but in that case queueing has been done.

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2021-46969"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-02-27T19:04:07Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbus: mhi: core: Fix invalid error returning in mhi_queue\n\nmhi_queue returns an error when the doorbell is not accessible in\nthe current state. This can happen when the device is in non M0\nstate, like M3, and needs to be waken-up prior ringing the DB. This\ncase is managed earlier by triggering an asynchronous M3 exit via\ncontroller resume/suspend callbacks, that in turn will cause M0\ntransition and DB update.\n\nSo, since it\u0027s not an error but just delaying of doorbell update, there\nis no reason to return an error.\n\nThis also fixes a use after free error for skb case, indeed a caller\nqueuing skb will try to free the skb if the queueing fails, but in\nthat case queueing has been done.",
  "id": "GHSA-c4q6-cxg2-pxc8",
  "modified": "2025-01-08T18:30:40Z",
  "published": "2024-02-27T21:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-46969"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0ecc1c70dcd32c0f081b173a1a5d89952686f271"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a99b661c3187365f81026d89b1133a76cd2652b3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

cve-2021-46969

Vulnerability from cvelistv5

Published

2024-02-27 18:47

Modified

2024-12-19 07:32

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: bus: mhi: core: Fix invalid error returning in mhi_queue mhi_queue returns an error when the doorbell is not accessible in the current state. This can happen when the device is in non M0 state, like M3, and needs to be waken-up prior ringing the DB. This case is managed earlier by triggering an asynchronous M3 exit via controller resume/suspend callbacks, that in turn will cause M0 transition and DB update. So, since it's not an error but just delaying of doorbell update, there is no reason to return an error. This also fixes a use after free error for skb case, indeed a caller queuing skb will try to free the skb if the queueing fails, but in that case queueing has been done.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/a99b661c3187365f81026d89b1133a76cd2652b3
	https://git.kernel.org/stable/c/0ecc1c70dcd32c0f081b173a1a5d89952686f271

Impacted products

Vendor

Product

Version

▼

Linux

Version: a8f75cb348fd52e7a5cf25991cdf9c89fb0cfd41
Version: a8f75cb348fd52e7a5cf25991cdf9c89fb0cfd41

Linux

Version: 5.12

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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