Vulnerability-Lookup

GHSA-H6XR-332M-PX9V

Vulnerability from github – Published: 2025-12-24 12:30 – Updated: 2026-07-30 06:32

Details

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

ALSA: firewire-motu: fix buffer overflow in hwdep read for DSP events

The DSP event handling code in hwdep_read() could write more bytes to the user buffer than requested, when a user provides a buffer smaller than the event header size (8 bytes).

Fix by using min_t() to clamp the copy size, This ensures we never copy more than the user requested.

Severity

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2025-68347"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-24T11:15:58Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: firewire-motu: fix buffer overflow in hwdep read for DSP events\n\nThe DSP event handling code in hwdep_read() could write more bytes to\nthe user buffer than requested, when a user provides a buffer smaller\nthan the event header size (8 bytes).\n\nFix by using min_t() to clamp the copy size, This ensures we never copy\nmore than the user requested.",
  "id": "GHSA-h6xr-332m-px9v",
  "modified": "2026-07-30T06:32:25Z",
  "published": "2025-12-24T12:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68347"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/161291bac551821bba98eb4ea84c82338578d1b0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/16620f0617400746984362c3d6ac547eeae1d35f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/210d77cca3d0494ed30a5c628b20c1d95fa04fb1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6275fd726d53a8ec724f20201cf3bd862711e17b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cdda0d06f8650e33255f79839f188bbece44117c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ddd32ec66bc4eb6969fe835e4cc1c0706c6348fe"
    }
  ],
  "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-2025-68347 (GCVE-0-2025-68347)

Vulnerability from cvelistv5 – Published: 2025-12-24 10:32 – Updated: 2026-08-05 12:10

Title

ALSA: firewire-motu: fix buffer overflow in hwdep read for DSP events

Summary

In the Linux kernel, the following vulnerability has been resolved: ALSA: firewire-motu: fix buffer overflow in hwdep read for DSP events The DSP event handling code in hwdep_read() could write more bytes to the user buffer than requested, when a user provides a buffer smaller than the event header size (8 bytes). Fix by using min_t() to clamp the copy size, This ensures we never copy more than the user requested.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux

References

6 references

URL	Tags
https://git.kernel.org/stable/c/16620f06174007469…
https://git.kernel.org/stable/c/ddd32ec66bc4eb696…
https://git.kernel.org/stable/c/6275fd726d53a8ec7…
https://git.kernel.org/stable/c/161291bac551821bb…
https://git.kernel.org/stable/c/cdda0d06f8650e332…
https://git.kernel.org/stable/c/210d77cca3d0494ed…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 634ec0b2906efd46f6f57977e172aa3470aca432 , < 16620f0617400746984362c3d6ac547eeae1d35f (git) Affected: 634ec0b2906efd46f6f57977e172aa3470aca432 , < ddd32ec66bc4eb6969fe835e4cc1c0706c6348fe (git) Affected: 634ec0b2906efd46f6f57977e172aa3470aca432 , < 6275fd726d53a8ec724f20201cf3bd862711e17b (git) Affected: 634ec0b2906efd46f6f57977e172aa3470aca432 , < 161291bac551821bba98eb4ea84c82338578d1b0 (git) Affected: 634ec0b2906efd46f6f57977e172aa3470aca432 , < cdda0d06f8650e33255f79839f188bbece44117c (git) Affected: 634ec0b2906efd46f6f57977e172aa3470aca432 , < 210d77cca3d0494ed30a5c628b20c1d95fa04fb1 (git)
Linux	Linux	Affected: 5.16 Unaffected: 0 , < 5.16 (semver) Unaffected: 6.1.160 , ≤ 6.1.* (semver) Unaffected: 6.6.120 , ≤ 6.6.* (semver) Unaffected: 6.12.63 , ≤ 6.12.* (semver) Unaffected: 6.17.13 , ≤ 6.17.* (semver) Unaffected: 6.18.2 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "sound/firewire/motu/motu-hwdep.c"
          ],
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
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              "status": "unaffected",
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              "versionType": "semver"
            },
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              "versionType": "original_commit_for_fix"
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      "cpeApplicability": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: firewire-motu: fix buffer overflow in hwdep read for DSP events\n\nThe DSP event handling code in hwdep_read() could write more bytes to\nthe user buffer than requested, when a user provides a buffer smaller\nthan the event header size (8 bytes).\n\nFix by using min_t() to clamp the copy size, This ensures we never copy\nmore than the user requested."
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            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - Exploitation reaches the vulnerable callback through read() on the local ALSA hwdep device; the connected MOTU interface is a deployment prerequisite rather than the attack channel.\nAC:L - A device-authorized attacker can start streaming, induce or await a DSP parameter event, and deterministically request fewer than eight bytes. No race or condition outside the attacker\u2019s influence is required.\nPR:L - The path has no capability or namespace check, but requires ordinary access to the ALSA device node, commonly granted to an active unprivileged user or audio-group member.\nUI:N - No human victim action is required once a DSP event is queued; the attacker or an automatically operating consumer can trigger the faulty read.\nS:U - The corruption occurs within the host\u2019s kernel/userspace security authority and does not cross a VM, IOMMU, or comparable isolation boundary.\nC:H - The direct header contains no secret, but the out-of-bounds write can corrupt adjacent allocator or control data in a privileged consumer. Under the required higher-severity assumption, resulting control-flow compromise could expose all data accessible to that process.\nI:H - The kernel writes an eight-byte header despite a request for as few as zero bytes, allowing up to seven bytes of adjacent userspace memory corruption. Such an out-of-bounds write can corrupt pointers or allocator metadata and potentially enable control-flow hijacking.\nA:H - The overwrite can crash the consuming process, and the still-queued or repeatedly induced DSP event permits recurring denial of a critical audio or control service."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:10:58.597Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/210d77cca3d0494ed30a5c628b20c1d95fa04fb1"
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      "title": "ALSA: firewire-motu: fix buffer overflow in hwdep read for DSP events",
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    "cveId": "CVE-2025-68347",
    "datePublished": "2025-12-24T10:32:39.804Z",
    "dateReserved": "2025-12-16T14:48:05.299Z",
    "dateUpdated": "2026-08-05T12:10:58.597Z",
    "state": "PUBLISHED"
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

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GHSA-H6XR-332M-PX9V

CVE-2025-68347 (GCVE-0-2025-68347)

Tags

Sightings

Nomenclature