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GHSA-79CQ-96J4-G3X2

Vulnerability from github – Published: 2026-08-28 09:31 – Updated: 2026-08-28 09:31

Details

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

soc: xilinx: Shutdown and free rx mailbox channel

A mbox rx channel is requested using mbox_request_channel_byname() in probe. In remove callback, the rx mailbox channel is cleaned up when the rx_chan is NULL due to incorrect condition check. The mailbox channel is not shutdown and it can receive messages even after the device removal. This leads to use after free. Also the channel resources are not freed. Fix this by checking the rx_chan correctly.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-80654"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-28T08:16:50Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsoc: xilinx: Shutdown and free rx mailbox channel\n\nA mbox rx channel is requested using mbox_request_channel_byname() in\nprobe. In remove callback, the rx mailbox channel is cleaned up when the\nrx_chan is NULL due to incorrect condition check. The mailbox channel is\nnot shutdown and it can receive messages even after the device removal.\nThis leads to use after free. Also the channel resources are not freed.\nFix this by checking the rx_chan correctly.",
  "id": "GHSA-79cq-96j4-g3x2",
  "modified": "2026-08-28T09:31:48Z",
  "published": "2026-08-28T09:31:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80654"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a83e77d1e52c01c50096e6e97c57d34e0590d628"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b0f748c563921a7918c78e6a599cefd54de7d688"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b5d2240c2c7bc8370e7ba54a2e1fe3919f55aee5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fdee7c66c0d7b6869c36b9f9a915abf29ab5b550"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-80654 (GCVE-0-2026-80654)

Vulnerability from cvelistv5 – Published: 2026-08-28 06:49 – Updated: 2026-08-28 06:49

Title

soc: xilinx: Shutdown and free rx mailbox channel

Summary

In the Linux kernel, the following vulnerability has been resolved: soc: xilinx: Shutdown and free rx mailbox channel A mbox rx channel is requested using mbox_request_channel_byname() in probe. In remove callback, the rx mailbox channel is cleaned up when the rx_chan is NULL due to incorrect condition check. The mailbox channel is not shutdown and it can receive messages even after the device removal. This leads to use after free. Also the channel resources are not freed. Fix this by checking the rx_chan correctly.

Severity

No CVSS data available.

Assigner

Linux mitre root Scorecard

References

4 references

URL	Tags
https://git.kernel.org/stable/c/b0f748c563921a791…
https://git.kernel.org/stable/c/a83e77d1e52c01c50…
https://git.kernel.org/stable/c/b5d2240c2c7bc8370…
https://git.kernel.org/stable/c/fdee7c66c0d7b6869…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: ffdbae28d9d1af70b7d63ffd7827e9795cd8d0df , < b0f748c563921a7918c78e6a599cefd54de7d688 (git) Affected: ffdbae28d9d1af70b7d63ffd7827e9795cd8d0df , < a83e77d1e52c01c50096e6e97c57d34e0590d628 (git) Affected: ffdbae28d9d1af70b7d63ffd7827e9795cd8d0df , < b5d2240c2c7bc8370e7ba54a2e1fe3919f55aee5 (git) Affected: ffdbae28d9d1af70b7d63ffd7827e9795cd8d0df , < fdee7c66c0d7b6869c36b9f9a915abf29ab5b550 (git)
Linux	Linux	Affected: 5.6 Unaffected: 0 , < 5.6 (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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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/soc/xilinx/zynqmp_power.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b0f748c563921a7918c78e6a599cefd54de7d688",
              "status": "affected",
              "version": "ffdbae28d9d1af70b7d63ffd7827e9795cd8d0df",
              "versionType": "git"
            },
            {
              "lessThan": "a83e77d1e52c01c50096e6e97c57d34e0590d628",
              "status": "affected",
              "version": "ffdbae28d9d1af70b7d63ffd7827e9795cd8d0df",
              "versionType": "git"
            },
            {
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            },
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            }
          ]
        },
        {
          "defaultStatus": "affected",
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          "programFiles": [
            "drivers/soc/xilinx/zynqmp_power.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.6"
            },
            {
              "lessThan": "5.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.97",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
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                }
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsoc: xilinx: Shutdown and free rx mailbox channel\n\nA mbox rx channel is requested using mbox_request_channel_byname() in\nprobe. In remove callback, the rx mailbox channel is cleaned up when the\nrx_chan is NULL due to incorrect condition check. The mailbox channel is\nnot shutdown and it can receive messages even after the device removal.\nThis leads to use after free. Also the channel resources are not freed.\nFix this by checking the rx_chan correctly."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-28T06:49:01.311Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/fdee7c66c0d7b6869c36b9f9a915abf29ab5b550"
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      ],
      "title": "soc: xilinx: Shutdown and free rx mailbox channel",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80654",
    "datePublished": "2026-08-28T06:49:01.311Z",
    "dateReserved": "2026-08-26T14:34:25.780Z",
    "dateUpdated": "2026-08-28T06:49:01.311Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.

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-79CQ-96J4-G3X2

CVE-2026-80654 (GCVE-0-2026-80654)

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