Vulnerability-Lookup

GHSA-M237-J8MR-F2GJ

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-17 06:33

Details

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

ASoC: SOF: ipc3-control: Fix TOCTOU in bytes_put and bytes_get

In sof_ipc3_bytes_put(), the size used for the memcpy is derived from the old data->size already in the buffer, not the incoming new data's size field. If the new data has a different size, the copy length is wrong: it may truncate valid data or copy stale bytes.

Similarly, sof_ipc3_bytes_get() checks data->size against max_size without accounting for the sizeof(struct sof_ipc_ctrl_data) offset of the flex array within the allocation.

Fix bytes_put to validate and use the incoming data's sof_abi_hdr.size from ucontrol before copying. Fix bytes_get to subtract sizeof(*cdata) from the bounds check to match the actual available space.

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-2026-72301"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:22:02Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: SOF: ipc3-control: Fix TOCTOU in bytes_put and bytes_get\n\nIn sof_ipc3_bytes_put(), the size used for the memcpy is derived from\nthe old data-\u003esize already in the buffer, not the incoming new data\u0027s\nsize field. If the new data has a different size, the copy length is\nwrong: it may truncate valid data or copy stale bytes.\n\nSimilarly, sof_ipc3_bytes_get() checks data-\u003esize against max_size\nwithout accounting for the sizeof(struct sof_ipc_ctrl_data) offset\nof the flex array within the allocation.\n\nFix bytes_put to validate and use the incoming data\u0027s sof_abi_hdr.size\nfrom ucontrol before copying. Fix bytes_get to subtract sizeof(*cdata)\nfrom the bounds check to match the actual available space.",
  "id": "GHSA-m237-j8mr-f2gj",
  "modified": "2026-08-17T06:33:22Z",
  "published": "2026-08-15T06:32:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72301"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0c4fbdaca225b97122b61b68c5353caa33a253c3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0dce240145f47545d2e4b18c6d58033b83e1fd0e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1f97760417b5faa60e9642fd0ed61eb17d0b1b39"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8bd715a9d882fe1993bb2aec5eff89fffa946592"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/92f90917413bdd6078fefff6f6c83a07bf870b04"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ed4f758f34be4c32e02933ac4fa044589d9c1c16"
    }
  ],
  "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-2026-72301 (GCVE-0-2026-72301)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:55 – Updated: 2026-08-17 05:42

Title

ASoC: SOF: ipc3-control: Fix TOCTOU in bytes_put and bytes_get

Summary

In the Linux kernel, the following vulnerability has been resolved: ASoC: SOF: ipc3-control: Fix TOCTOU in bytes_put and bytes_get In sof_ipc3_bytes_put(), the size used for the memcpy is derived from the old data->size already in the buffer, not the incoming new data's size field. If the new data has a different size, the copy length is wrong: it may truncate valid data or copy stale bytes. Similarly, sof_ipc3_bytes_get() checks data->size against max_size without accounting for the sizeof(struct sof_ipc_ctrl_data) offset of the flex array within the allocation. Fix bytes_put to validate and use the incoming data's sof_abi_hdr.size from ucontrol before copying. Fix bytes_get to subtract sizeof(*cdata) from the bounds check to match the actual available space.

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 mitre root

References

6 references

URL	Tags
https://git.kernel.org/stable/c/8bd715a9d882fe199…
https://git.kernel.org/stable/c/0dce240145f47545d…
https://git.kernel.org/stable/c/ed4f758f34be4c32e…
https://git.kernel.org/stable/c/0c4fbdaca225b9712…
https://git.kernel.org/stable/c/92f90917413bdd607…
https://git.kernel.org/stable/c/1f97760417b5faa60…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 544ac8858f249950b4d99c68e538cdc07300528f , < 8bd715a9d882fe1993bb2aec5eff89fffa946592 (git) Affected: 544ac8858f249950b4d99c68e538cdc07300528f , < 0dce240145f47545d2e4b18c6d58033b83e1fd0e (git) Affected: 544ac8858f249950b4d99c68e538cdc07300528f , < ed4f758f34be4c32e02933ac4fa044589d9c1c16 (git) Affected: 544ac8858f249950b4d99c68e538cdc07300528f , < 0c4fbdaca225b97122b61b68c5353caa33a253c3 (git) Affected: 544ac8858f249950b4d99c68e538cdc07300528f , < 92f90917413bdd6078fefff6f6c83a07bf870b04 (git) Affected: 544ac8858f249950b4d99c68e538cdc07300528f , < 1f97760417b5faa60e9642fd0ed61eb17d0b1b39 (git)
Linux	Linux	Affected: 5.18 Unaffected: 0 , < 5.18 (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.97 , ≤ 6.12.* (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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            "sound/soc/sof/ipc3-control.c"
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        }
      ],
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              "value": "AV:L - Exploitation requires local ALSA access via /dev/snd/controlC* and SNDRV_CTL_IOCTL_ELEM_READ/WRITE ioctls through snd_ctl_elem_write/read to sof_ipc3_bytes_put/get; SOF audio DSP controls are not reachable over the network.\nAC:L - An attacker can deterministically trigger the bug by sequencing bytes_put calls to set a large stale data-\u003esize then issue a second put with a smaller header, or use bytes_get after inflating size; no uncontrollable race or rare layout is required.\nPR:L - Only standard local access to the ALSA control device is needed; on typical Linux desktops and laptops with Intel/AMD SOF IPC3, session users in the audio group can write SOF bytes kcontrols without real root or init-namespace capabilities.\nUI:N - No victim interaction is required; a local attacker with sound-device access can directly issue ioctl-based ALSA control read/write operations against writable SOF bytes controls.\nS:U - The flaw corrupts kernel heap memory adjacent to a SOF control allocation and can enable local privilege escalation, but it does not cross a VM, IOMMU, or sandbox security boundary into another authority.\nC:H - sof_ipc3_bytes_get can memcpy up to roughly sizeof(struct sof_ipc_ctrl_data) bytes beyond the kzalloc(max_size) allocation into userspace when data-\u003esize passes an incorrect bound, leaking adjacent kernel heap contents.\nI:H - sof_ipc3_bytes_put uses stale data-\u003esize for memcpy length instead of the incoming sof_abi_hdr.size, enabling a heap out-of-bounds write past the control buffer that can corrupt adjacent kmalloc objects and be leveraged for code execution.\nA:H - The out-of-bounds read/write corrupts kernel heap metadata or adjacent objects and can cause kernel oops, panic, or hang when exploiting SOF IPC3 bytes controls on affected hardware."
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    "cveId": "CVE-2026-72301",
    "datePublished": "2026-08-15T05:55:20.430Z",
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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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

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GHSA-M237-J8MR-F2GJ

CVE-2026-72301 (GCVE-0-2026-72301)

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Nomenclature