UnratedFix available
x86/boot: Validate console=uart8250 baud rate to fix early boot hang
Type: advisorySources: OSV
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.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.261, 5.15.212, 6.1.178, 6.12.97, 6.18.40, 6.6.145, 7.1.5
- CVEs
- CVE-2026-72238
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 21:30 UTC · Revision 1
Source evidence
x86/boot: Validate console=uart8250 baud rate to fix early boot hang
core-osv · Original sourcePublished 15 Aug 2026, 05:54 UTC
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.
osv:CVE-2026-72238
Kernel
Fixed versions: 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5
Complete source record
{
"id": "d60057a6b3cf25669706a45c9337a622ac647a785ec36b9bb5212847574e335d",
"url": "https://osv.dev/vulnerability/CVE-2026-72238",
"method": "structured",
"payload": {
"kind": "advisory",
"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.",
"evidence": "osv:CVE-2026-72238",
"products": [
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"name": {
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"evidence": "/affected/1/ranges"
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{
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"evidence": "/affected/1/ranges"
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{
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{
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{
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{
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{
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"affected_versions": []
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"severity": "unknown",
"structured": {
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"aliases": [
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{
"ranges": [
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{
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{
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{
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],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72238.json"
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],
"modified": "2026-10-28T02:30:23.759866275Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/24fbed0a2a45f5f379ef2b53bd2abe58be1142ad",
"https://git.kernel.org/stable/c/4dad7e870c7e5178f71b5e1e4f67934b9e8cc207",
"https://git.kernel.org/stable/c/9a77a7639dfdc3eca417cd37620ce64da79c80c4",
"https://git.kernel.org/stable/c/b4d05032e9af7137eab8f3af2855073f896ca843",
"https://git.kernel.org/stable/c/c1a276a731d02cbb728d0530f327a68728f2d8b0",
"https://git.kernel.org/stable/c/efa96a22613b86e05cd81229ce0be411c1a4a79a",
"https://git.kernel.org/stable/c/f7c67c97b37c11f2a95c204092fb8159f2779e8f",
"https://git.kernel.org/stable/c/ffa0aa5b625fe0bed7463ac613f8b06676ff4542",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72238.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-72238",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72238.json"
}
},
"related_cves": [
{
"value": "CVE-2026-72238",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 490272,
"published_at": "2026-08-15T05:54:27.424+00:00"
}