CVE-2026-72238 (GCVE-0-2026-72238)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:54 – Updated: 2026-08-17 05:10
VLAI
Title
x86/boot: Validate console=uart8250 baud rate to fix early boot hang
Summary
In the Linux kernel, the following vulnerability has been resolved: x86/boot: Validate console=uart8250 baud rate to fix early boot hang When the baud rate is empty, 0, invalid, or overflows to 0 when stored as an int, the system will hang during early boot because of a division by zero in early_serial_init(). Fall back to DEFAULT_BAUD when the resulting baud rate is 0 to prevent an early system hang.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: ce0aa5dd20e44372f9617dd67c984f41fcdbed88 , < c1a276a731d02cbb728d0530f327a68728f2d8b0 (git)
Affected: ce0aa5dd20e44372f9617dd67c984f41fcdbed88 , < 24fbed0a2a45f5f379ef2b53bd2abe58be1142ad (git)
Affected: ce0aa5dd20e44372f9617dd67c984f41fcdbed88 , < efa96a22613b86e05cd81229ce0be411c1a4a79a (git)
Affected: ce0aa5dd20e44372f9617dd67c984f41fcdbed88 , < 9a77a7639dfdc3eca417cd37620ce64da79c80c4 (git)
Affected: ce0aa5dd20e44372f9617dd67c984f41fcdbed88 , < b4d05032e9af7137eab8f3af2855073f896ca843 (git)
Affected: ce0aa5dd20e44372f9617dd67c984f41fcdbed88 , < f7c67c97b37c11f2a95c204092fb8159f2779e8f (git)
Affected: ce0aa5dd20e44372f9617dd67c984f41fcdbed88 , < 4dad7e870c7e5178f71b5e1e4f67934b9e8cc207 (git)
Affected: ce0aa5dd20e44372f9617dd67c984f41fcdbed88 , < ffa0aa5b625fe0bed7463ac613f8b06676ff4542 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.36
Unaffected: 0 , < 2.6.36 (semver)
Unaffected: 5.10.261 , ≤ 5.10.* (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (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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{
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    "datePublished": "2026-08-15T05:54:27.424Z",
    "dateReserved": "2026-08-09T03:40:39.914Z",
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    "state": "PUBLISHED"
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-17T16:59:34+00:00",
      "cve": "CVE-2026-72238",
      "id": "CVE-2026-72238",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: x86/boot: Validate console=uart8250 baud rate to fix early boot hang",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72238.json",
      "version": "3"
    }
  }
}



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Sightings

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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.