Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Cryptographic API; - GPU drivers; - BTRFS file system; - GFS2 file system; - UDF file system; - NFC subsystem; - Network traffic control; (CVE-2021-47142, CVE-2021-47145, CVE-2021-47254, CVE-2024-46777, CVE-2025-21735, CVE-2026-23060, CVE-2026-23074)
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"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8143-1.json"
{
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{
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{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2021-47142"
},
{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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},
{
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"type": "Ubuntu"
}
],
"id": "CVE-2021-47145"
},
{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2021-47254"
},
{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2024-46777"
},
{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
],
"id": "CVE-2025-21735"
},
{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2026-23060"
},
{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2026-23074"
}
]
}
{
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],
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}
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8143-1.json"
{
"ecosystem": "Ubuntu:Pro:16.04:LTS",
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{
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{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
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{
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{
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{
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},
{
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}
],
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{
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{
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},
{
"score": "medium",
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}
],
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},
{
"severity": [
{
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"type": "CVSS_V3"
},
{
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"type": "Ubuntu"
}
],
"id": "CVE-2024-46777"
},
{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "high",
"type": "Ubuntu"
}
],
"id": "CVE-2025-21735"
},
{
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{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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{
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}
],
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},
{
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{
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{
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}
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{
"ecosystem": "Ubuntu:Pro:16.04:LTS",
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{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
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],
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},
{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"id": "CVE-2021-47145"
},
{
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
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}
],
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},
{
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{
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},
{
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],
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{
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{
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},
{
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{
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},
{
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}
],
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},
{
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{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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},
{
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"type": "Ubuntu"
}
],
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}
]
}