Sergiu Ghetie discovered that some IntelĀ® processors did not properly handle values in the microcode flow. A local authenticated user could potentially use this issue to escalate their privileges.
{
"binaries": [
{
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"binary_name": "intel-microcode"
}
],
"availability": "No subscription required"
}{
"ecosystem": "Ubuntu:22.04:LTS",
"cves": [
{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
"type": "CVSS_V4"
},
{
"score": "low",
"type": "Ubuntu"
}
],
"id": "CVE-2025-31648"
}
]
}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8068-1.json"
{
"binaries": [
{
"binary_version": "3.20260210.0ubuntu0.24.04.1",
"binary_name": "intel-microcode"
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],
"availability": "No subscription required"
}{
"ecosystem": "Ubuntu:24.04:LTS",
"cves": [
{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
"type": "CVSS_V4"
},
{
"score": "low",
"type": "Ubuntu"
}
],
"id": "CVE-2025-31648"
}
]
}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8068-1.json"
{
"binaries": [
{
"binary_version": "3.20260210.0ubuntu0.25.10.1",
"binary_name": "intel-microcode"
}
],
"availability": "No subscription required"
}{
"ecosystem": "Ubuntu:25.10",
"cves": [
{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
"type": "CVSS_V4"
},
{
"score": "low",
"type": "Ubuntu"
}
],
"id": "CVE-2025-31648"
}
]
}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8068-1.json"
{
"binaries": [
{
"binary_version": "3.20260210.0ubuntu0.18.04.1+esm1",
"binary_name": "intel-microcode"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}{
"cves": [
{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
"type": "CVSS_V4"
},
{
"score": "low",
"type": "Ubuntu"
}
],
"id": "CVE-2025-31648"
}
],
"ecosystem": "Ubuntu:Pro:18.04:LTS"
}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8068-1.json"
{
"binaries": [
{
"binary_version": "3.20260210.0ubuntu0.20.04.1+esm1",
"binary_name": "intel-microcode"
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],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}{
"cves": [
{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
"type": "CVSS_V4"
},
{
"score": "low",
"type": "Ubuntu"
}
],
"id": "CVE-2025-31648"
}
],
"ecosystem": "Ubuntu:Pro:20.04:LTS"
}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8068-1.json"