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CVE-2026-53296 (GCVE-0-2026-53296)

Vulnerability from cvelistv5 – Published: 2026-06-26 19:40 – Updated: 2026-06-26 19:40
VLAI
Title
mailbox: mailbox-test: free channels on probe error
Summary
In the Linux kernel, the following vulnerability has been resolved: mailbox: mailbox-test: free channels on probe error On probe error, free the previously obtained channels. This not only prevents a leak, but also UAF scenarios because the client structure will be removed nonetheless because it was allocated with devm.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 , < 0ad8c4a03a358de7811ba1ab8cbd1fe76ad0ff6b (git)
Affected: 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 , < 15c4cc3850cfe1b973eb7b63c02314b267f06a64 (git)
Affected: 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 , < 187069ccc3474516af32350e20d7e449160fa6de (git)
Affected: 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 , < 81c9e7e4030e71391ab479c4c6e17b64802577aa (git)
Affected: 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 , < 6c6ce2ccb4fcf1617fec83f91b21aa0265f30701 (git)
Affected: 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 , < 742001919653e7313b4e91780c5d108be1692365 (git)
Affected: 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 , < 02beb178e2e159daeb8f992d7abb16a37da31664 (git)
Affected: 8ea4484d0c2bb4e2152261943fa1a3522654b1c7 , < c02053a9055d5fdfd32432287cca8958db1d5bc5 (git)
guessed Create a notification for this product.
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)
guessed Create a notification for this product.
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      "version": "3"
    },
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-08T04:05:43+00:00",
      "cve": "CVE-2026-53296",
      "id": "CVE-2026-53296",
      "initial_release_date": "2026-06-26T00:00:00+00:00",
      "product_status:known_affected": "232",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: mailbox: mailbox-test: free channels on probe error",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53296.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-06-30T01:43:00Z",
      "cve": "CVE-2026-53296",
      "id": "CVE-2026-53296",
      "initial_release_date": "2026-06-28T01:09:08Z",
      "product_status:known_affected": "287",
      "product_status:known_not_affected": "4",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-53296",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-53296.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • 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.


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