GHSA-GH37-H7XR-7HJ2

Vulnerability from github – Published: 2024-09-04 21:30 – Updated: 2025-11-04 00:31
VLAI
Details

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

ALSA: line6: Fix racy access to midibuf

There can be concurrent accesses to line6 midibuf from both the URB completion callback and the rawmidi API access. This could be a cause of KMSAN warning triggered by syzkaller below (so put as reported-by here).

This patch protects the midibuf call of the former code path with a spinlock for avoiding the possible races.

Severity
4.7 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2024-44954"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-362"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-09-04T19:15:30Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: line6: Fix racy access to midibuf\n\nThere can be concurrent accesses to line6 midibuf from both the URB\ncompletion callback and the rawmidi API access.  This could be a cause\nof KMSAN warning triggered by syzkaller below (so put as reported-by\nhere).\n\nThis patch protects the midibuf call of the former code path with a\nspinlock for avoiding the possible races.",
  "id": "GHSA-gh37-h7xr-7hj2",
  "modified": "2025-11-04T00:31:20Z",
  "published": "2024-09-04T21:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-44954"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/15b7a03205b31bc5623378c190d22b7ff60026f1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/40f3d5cb0e0cbf7fa697913a27d5d361373bdcf5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/51d87f11dd199bbc6a85982b088ff27bde53b48a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/535df7f896a568a8a1564114eaea49d002cb1747"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/643293b68fbb6c03f5e907736498da17d43f0d81"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a54da4b787dcac60b598da69c9c0072812b8282d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c80f454a805443c274394b1db0d1ebf477abd94e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7e7d2b180d8f297cea6db43ea72402fd33e1a29"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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