CVE-2026-72238 (GCVE-0-2026-72238)
Vulnerability from cvelistv5
Published
2026-08-15 05:54
Modified
2026-08-17 05:10
Severity ?
VLAI Severity ?
EPSS score ?
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.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: ce0aa5dd20e44372f9617dd67c984f41fcdbed88 Version: ce0aa5dd20e44372f9617dd67c984f41fcdbed88 Version: ce0aa5dd20e44372f9617dd67c984f41fcdbed88 Version: ce0aa5dd20e44372f9617dd67c984f41fcdbed88 Version: ce0aa5dd20e44372f9617dd67c984f41fcdbed88 Version: ce0aa5dd20e44372f9617dd67c984f41fcdbed88 Version: ce0aa5dd20e44372f9617dd67c984f41fcdbed88 Version: ce0aa5dd20e44372f9617dd67c984f41fcdbed88 |
||
{
"containers": {
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"programFiles": [
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"versions": [
{
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"version": "2.6.36"
},
{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.261",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.212",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.97",
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},
{
"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": [
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"nodes": [
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"negate": false,
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/boot: Validate console=uart8250 baud rate to fix early boot hang\n\nWhen the baud rate is empty, 0, invalid, or overflows to 0 when stored\nas an int, the system will hang during early boot because of a division\nby zero in early_serial_init().\n\nFall back to DEFAULT_BAUD when the resulting baud rate is 0 to prevent\nan early system hang."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-17T05:10:56.018Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/c1a276a731d02cbb728d0530f327a68728f2d8b0"
},
{
"url": "https://git.kernel.org/stable/c/24fbed0a2a45f5f379ef2b53bd2abe58be1142ad"
},
{
"url": "https://git.kernel.org/stable/c/efa96a22613b86e05cd81229ce0be411c1a4a79a"
},
{
"url": "https://git.kernel.org/stable/c/9a77a7639dfdc3eca417cd37620ce64da79c80c4"
},
{
"url": "https://git.kernel.org/stable/c/b4d05032e9af7137eab8f3af2855073f896ca843"
},
{
"url": "https://git.kernel.org/stable/c/f7c67c97b37c11f2a95c204092fb8159f2779e8f"
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{
"url": "https://git.kernel.org/stable/c/4dad7e870c7e5178f71b5e1e4f67934b9e8cc207"
},
{
"url": "https://git.kernel.org/stable/c/ffa0aa5b625fe0bed7463ac613f8b06676ff4542"
}
],
"title": "x86/boot: Validate console=uart8250 baud rate to fix early boot hang",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-72238",
"datePublished": "2026-08-15T05:54:27.424Z",
"dateReserved": "2026-08-09T03:40:39.914Z",
"dateUpdated": "2026-08-17T05:10:56.018Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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