Vulnerability-Lookup

CVE-2026-64485 (GCVE-0-2026-64485)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:51 – Updated: 2026-07-25 08:51

Title

ALSA: compress: Fix task creation error unwind

Summary

In the Linux kernel, the following vulnerability has been resolved: ALSA: compress: Fix task creation error unwind snd_compr_task_new() allocates the driver task before validating the returned DMA buffers and reserving file descriptors. When either of those later steps fails, the core frees its task wrapper and DMA-buffer references without calling the driver's task_free() callback. Any driver resources allocated by task_create() are therefore leaked. The dual-fd allocation path also jumps to cleanup without storing the negative get_unused_fd_flags() result in retval. Since retval still contains the successful task_create() return value, TASK_CREATE can incorrectly report success although the task was discarded. Preserve the fd allocation errors and call task_free() when failure occurs after a successful task_create() callback.

Severity

No CVSS data available.

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/b27a75d42044d9d47…
https://git.kernel.org/stable/c/426a9947a38d272d0…
https://git.kernel.org/stable/c/4a60127debb9e370d…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 04177158cf98a79744937893b100020d77e6f9ac , < b27a75d42044d9d4709095617730b91b1c4af423 (git) Affected: 04177158cf98a79744937893b100020d77e6f9ac , < 426a9947a38d272d0e19c031658da68e31128667 (git) Affected: 04177158cf98a79744937893b100020d77e6f9ac , < 4a60127debb9e370d6c0e22a307326b624a141f3 (git)
Linux	Linux	Affected: 6.13 Unaffected: 0 , < 6.13 (semver) Unaffected: 6.18.39 , ≤ 6.18.* (semver) Unaffected: 7.1.4 , ≤ 7.1.* (semver) Unaffected: 7.2-rc1 , ≤ * (original_commit_for_fix)

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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: compress: Fix task creation error unwind\n\nsnd_compr_task_new() allocates the driver task before validating the\nreturned DMA buffers and reserving file descriptors. When either of\nthose later steps fails, the core frees its task wrapper and DMA-buffer\nreferences without calling the driver\u0027s task_free() callback. Any\ndriver resources allocated by task_create() are therefore leaked.\n\nThe dual-fd allocation path also jumps to cleanup without storing the\nnegative get_unused_fd_flags() result in retval. Since retval still\ncontains the successful task_create() return value, TASK_CREATE can\nincorrectly report success although the task was discarded.\n\nPreserve the fd allocation errors and call task_free() when failure\noccurs after a successful task_create() callback."
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      "title": "ALSA: compress: Fix task creation error unwind",
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    "datePublished": "2026-07-25T08:51:45.301Z",
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    "suse_vex": {
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      "id": "CVE-2026-64485",
      "initial_release_date": "2026-07-25T15:58:27Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64485",
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}

GHSA-5V9V-XRMH-22C6

Vulnerability from github – Published: 2026-07-25 12:31 – Updated: 2026-07-25 12:31

Details

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

ALSA: compress: Fix task creation error unwind

snd_compr_task_new() allocates the driver task before validating the returned DMA buffers and reserving file descriptors. When either of those later steps fails, the core frees its task wrapper and DMA-buffer references without calling the driver's task_free() callback. Any driver resources allocated by task_create() are therefore leaked.

The dual-fd allocation path also jumps to cleanup without storing the negative get_unused_fd_flags() result in retval. Since retval still contains the successful task_create() return value, TASK_CREATE can incorrectly report success although the task was discarded.

Preserve the fd allocation errors and call task_free() when failure occurs after a successful task_create() callback.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-64485"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-25T10:17:34Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: compress: Fix task creation error unwind\n\nsnd_compr_task_new() allocates the driver task before validating the\nreturned DMA buffers and reserving file descriptors. When either of\nthose later steps fails, the core frees its task wrapper and DMA-buffer\nreferences without calling the driver\u0027s task_free() callback. Any\ndriver resources allocated by task_create() are therefore leaked.\n\nThe dual-fd allocation path also jumps to cleanup without storing the\nnegative get_unused_fd_flags() result in retval. Since retval still\ncontains the successful task_create() return value, TASK_CREATE can\nincorrectly report success although the task was discarded.\n\nPreserve the fd allocation errors and call task_free() when failure\noccurs after a successful task_create() callback.",
  "id": "GHSA-5v9v-xrmh-22c6",
  "modified": "2026-07-25T12:31:37Z",
  "published": "2026-07-25T12:31:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64485"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/426a9947a38d272d0e19c031658da68e31128667"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4a60127debb9e370d6c0e22a307326b624a141f3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b27a75d42044d9d4709095617730b91b1c4af423"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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.

Action not permitted

CVE-2026-64485 (GCVE-0-2026-64485)

GHSA-5V9V-XRMH-22C6

Tags

Sightings

Nomenclature