Vulnerability-Lookup

GHSA-GRHQ-RQC2-RHJR

Vulnerability from github – Published: 2026-06-26 21:32 – Updated: 2026-06-26 21:32

Details

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

mailbox: mailbox-test: don't free the reused channel

The RX channel can be aliased to the TX channel if it has a different MMIO. This special case needs to be handled when freeing the channels otherwise a double-free occurs.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53294"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-26T20:17:22Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmailbox: mailbox-test: don\u0027t free the reused channel\n\nThe RX channel can be aliased to the TX channel if it has a different\nMMIO. This special case needs to be handled when freeing the channels\notherwise a double-free occurs.",
  "id": "GHSA-grhq-rqc2-rhjr",
  "modified": "2026-06-26T21:32:17Z",
  "published": "2026-06-26T21:32:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53294"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/240c71a2aea36a1a4210f911a1c32ea88777e8e4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3afca89fae501dbd7421e1777b5b8f033b1d98d0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5c209299b0113e289e238fa5f2e8f00c59f76060"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5d4f3d0f64f1016cb78b400a70b67df91fac99b5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/82f6dcea46cf5de65c4ba7283f7c7b34de4a324d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/88ebadbf0deefdaccdab868b44ff70a0a257f473"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c494a11da45ad7ec9b0ff216c3e3ace351193bb6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fc0089f82c3e36060c2c79156bc2018bfb16b56b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-53294 (GCVE-0-2026-53294)

Vulnerability from cvelistv5 – Published: 2026-06-26 19:40 – Updated: 2026-06-26 19:40

Title

mailbox: mailbox-test: don't free the reused channel

Summary

In the Linux kernel, the following vulnerability has been resolved: mailbox: mailbox-test: don't free the reused channel The RX channel can be aliased to the TX channel if it has a different MMIO. This special case needs to be handled when freeing the channels otherwise a double-free occurs.

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/fc0089f82c3e36060…
https://git.kernel.org/stable/c/5d4f3d0f64f1016cb…
https://git.kernel.org/stable/c/c494a11da45ad7ec9…
https://git.kernel.org/stable/c/3afca89fae501dbd7…
https://git.kernel.org/stable/c/5c209299b0113e289…
https://git.kernel.org/stable/c/82f6dcea46cf5de65…
https://git.kernel.org/stable/c/240c71a2aea36a1a4…
https://git.kernel.org/stable/c/88ebadbf0deefdacc…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 , < fc0089f82c3e36060c2c79156bc2018bfb16b56b (git) Affected: 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 , < 5d4f3d0f64f1016cb78b400a70b67df91fac99b5 (git) Affected: 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 , < c494a11da45ad7ec9b0ff216c3e3ace351193bb6 (git) Affected: 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 , < 3afca89fae501dbd7421e1777b5b8f033b1d98d0 (git) Affected: 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 , < 5c209299b0113e289e238fa5f2e8f00c59f76060 (git) Affected: 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 , < 82f6dcea46cf5de65c4ba7283f7c7b34de4a324d (git) Affected: 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 , < 240c71a2aea36a1a4210f911a1c32ea88777e8e4 (git) Affected: 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 , < 88ebadbf0deefdaccdab868b44ff70a0a257f473 (git)
Linux	Linux	Affected: 4.4 Unaffected: 0 , < 4.4 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.141 , ≤ 6.6.* (semver) Unaffected: 6.12.91 , ≤ 6.12.* (semver) Unaffected: 6.18.33 , ≤ 6.18.* (semver) Unaffected: 7.0.10 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/mailbox/mailbox-test.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "status": "affected",
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              "versionType": "git"
            },
            {
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              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "5c209299b0113e289e238fa5f2e8f00c59f76060",
              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "82f6dcea46cf5de65c4ba7283f7c7b34de4a324d",
              "status": "affected",
              "version": "8ea4484d0c2bb4e2152261943fa1a3522654b1c7",
              "versionType": "git"
            },
            {
              "lessThan": "240c71a2aea36a1a4210f911a1c32ea88777e8e4",
              "status": "affected",
              "version": "8ea4484d0c2bb4e2152261943fa1a3522654b1c7",
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            },
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              "status": "affected",
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
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          "programFiles": [
            "drivers/mailbox/mailbox-test.c"
          ],
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.4"
            },
            {
              "lessThan": "4.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.258",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.141",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.91",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.258",
                  "versionStartIncluding": "4.4",
                  "vulnerable": true
                },
                {
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                },
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                },
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmailbox: mailbox-test: don\u0027t free the reused channel\n\nThe RX channel can be aliased to the TX channel if it has a different\nMMIO. This special case needs to be handled when freeing the channels\notherwise a double-free occurs."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-26T19:40:52.927Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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        {
          "url": "https://git.kernel.org/stable/c/3afca89fae501dbd7421e1777b5b8f033b1d98d0"
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        {
          "url": "https://git.kernel.org/stable/c/88ebadbf0deefdaccdab868b44ff70a0a257f473"
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      "title": "mailbox: mailbox-test: don\u0027t free the reused channel",
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      }
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  "cveMetadata": {
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    "cveId": "CVE-2026-53294",
    "datePublished": "2026-06-26T19:40:52.927Z",
    "dateReserved": "2026-06-09T07:44:35.396Z",
    "dateUpdated": "2026-06-26T19:40:52.927Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

GHSA-GRHQ-RQC2-RHJR

CVE-2026-53294 (GCVE-0-2026-53294)

Tags

Sightings

Nomenclature