USN-7935-1
- Source
- https://ubuntu.com/security/notices/USN-7935-1
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7935-1.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/USN-7935-1
- Upstream
- Related
- Published
- 2025-12-15T23:35:24.357239Z
- Modified
- 2025-12-23T06:46:43.497470Z
- Summary
- linux-azure, linux-azure-6.8 vulnerabilities
- Details
-
Jean-Claude Graf, Sandro Rüegge, Ali Hajiabadi, and Kaveh Razavi discovered that the Linux kernel contained insufficient branch predictor isolation between a guest and a userspace hypervisor for certain processors. This flaw is known as VMSCAPE. An attacker in a guest VM could possibly use this to expose sensitive information from the host OS. (CVE-2025-40300)
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; - HSI subsystem; - Media drivers; - Network drivers; - Bluetooth subsystem; - Timer subsystem; - Memory management; - Appletalk network protocol; - Netfilter; - TLS protocol; (CVE-2025-21729, CVE-2025-37838, CVE-2025-37958, CVE-2025-38118, CVE-2025-38227, CVE-2025-38352, CVE-2025-38616, CVE-2025-38666, CVE-2025-38678, CVE-2025-39964, CVE-2025-39993, CVE-2025-40018)
- References
-
- https://ubuntu.com/security/notices/USN-7935-1
- https://ubuntu.com/security/CVE-2025-21729
- https://ubuntu.com/security/CVE-2025-37838
- https://ubuntu.com/security/CVE-2025-37958
- https://ubuntu.com/security/CVE-2025-38118
- https://ubuntu.com/security/CVE-2025-38227
- https://ubuntu.com/security/CVE-2025-38352
- https://ubuntu.com/security/CVE-2025-38616
- https://ubuntu.com/security/CVE-2025-38666
- https://ubuntu.com/security/CVE-2025-38678
- https://ubuntu.com/security/CVE-2025-39964
- https://ubuntu.com/security/CVE-2025-39993
- https://ubuntu.com/security/CVE-2025-40018
- https://ubuntu.com/security/CVE-2025-40300
Affected packages
Ubuntu:22.04:LTS / linux-azure-6.8
Package
- Name
- linux-azure-6.8
- Purl
- pkg:deb/ubuntu/linux-azure-6.8@6.8.0-1044.50~22.04.1?arch=source&distro=jammy
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed6.8.0-1044.50~22.04.1
Affected versions
6.*
6.8.0-1008.8~22.04.1
6.8.0-1009.9~22.04.1
6.8.0-1010.10~22.04.1
6.8.0-1012.14~22.04.1
6.8.0-1013.15~22.04.1
6.8.0-1014.16~22.04.1
6.8.0-1015.17~22.04.2
6.8.0-1017.20~22.04.1
6.8.0-1018.21~22.04.1
6.8.0-1020.23~22.04.1
6.8.0-1021.25~22.04.1
6.8.0-1025.30~22.04.1
6.8.0-1026.31~22.04.1
6.8.0-1027.32~22.04.1
6.8.0-1028.33~22.04.1
6.8.0-1029.34~22.04.1
6.8.0-1030.35~22.04.1
6.8.0-1031.36~22.04.1
6.8.0-1034.39~22.04.1
6.8.0-1036.42~22.04.1
6.8.0-1040.46~22.04.1
6.8.0-1041.47~22.04.1
Ecosystem specific
{
"binaries": [
{
"binary_version": "6.8.0-1044.50~22.04.1",
"binary_name": "linux-azure-6.8-cloud-tools-6.8.0-1044"
},
{
"binary_version": "6.8.0-1044.50~22.04.1",
"binary_name": "linux-azure-6.8-headers-6.8.0-1044"
},
{
"binary_version": "6.8.0-1044.50~22.04.1",
"binary_name": "linux-azure-6.8-tools-6.8.0-1044"
},
{
"binary_version": "6.8.0-1044.50~22.04.1",
"binary_name": "linux-buildinfo-6.8.0-1044-azure"
},
{
"binary_version": "6.8.0-1044.50~22.04.1",
"binary_name": "linux-cloud-tools-6.8.0-1044-azure"
},
{
"binary_version": "6.8.0-1044.50~22.04.1",
"binary_name": "linux-headers-6.8.0-1044-azure"
},
{
"binary_version": "6.8.0-1044.50~22.04.1",
"binary_name": "linux-image-unsigned-6.8.0-1044-azure"
},
{
"binary_version": "6.8.0-1044.50~22.04.1",
"binary_name": "linux-modules-6.8.0-1044-azure"
},
{
"binary_version": "6.8.0-1044.50~22.04.1",
"binary_name": "linux-modules-extra-6.8.0-1044-azure"
},
{
"binary_version": "6.8.0-1044.50~22.04.1",
"binary_name": "linux-modules-involflt-6.8.0-1044-azure"
},
{
"binary_version": "6.8.0-1044.50~22.04.1",
"binary_name": "linux-modules-iwlwifi-6.8.0-1044-azure"
},
{
"binary_version": "6.8.0-1044.50~22.04.1",
"binary_name": "linux-tools-6.8.0-1044-azure"
}
],
"availability": "No subscription required"
}
Database specific
source
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7935-1.json"
cves_map
{
"cves": [
{
"id": "CVE-2025-21729",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2025-37838",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2025-37958",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2025-38118",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "high"
}
]
},
{
"id": "CVE-2025-38227",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2025-38352",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "high"
}
]
},
{
"id": "CVE-2025-38616",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2025-38666",
"severity": [
{
"type": "Ubuntu",
"score": "high"
}
]
},
{
"id": "CVE-2025-38678",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2025-39964",
"severity": [
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2025-39993",
"severity": [
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2025-40018",
"severity": [
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2025-40300",
"severity": [
{
"type": "Ubuntu",
"score": "high"
}
]
}
],
"ecosystem": "Ubuntu:22.04:LTS"
}
Ubuntu:24.04:LTS / linux-azure
Package
- Name
- linux-azure
- Purl
- pkg:deb/ubuntu/linux-azure@6.8.0-1044.50?arch=source&distro=noble
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed6.8.0-1044.50
Affected versions
6.*
6.5.0-1007.7
6.6.0-1001.1
6.8.0-1001.1
6.8.0-1005.5
6.8.0-1006.6
6.8.0-1007.7
6.8.0-1008.8
6.8.0-1009.9
6.8.0-1010.10
6.8.0-1012.14
6.8.0-1013.15
6.8.0-1014.16
6.8.0-1015.17
6.8.0-1016.18
6.8.0-1017.20
6.8.0-1018.21
6.8.0-1020.23
6.8.0-1021.25
6.8.0-1025.30
6.8.0-1026.31
6.8.0-1027.32
6.8.0-1028.33
6.8.0-1029.34
6.8.0-1030.35
6.8.0-1031.36
6.8.0-1034.39
6.8.0-1038.44
6.8.0-1040.46
6.8.0-1041.47
6.8.0-1042.48
Ecosystem specific
{
"binaries": [
{
"binary_version": "6.8.0-1044.50",
"binary_name": "linux-azure-cloud-tools-6.8.0-1044"
},
{
"binary_version": "6.8.0-1044.50",
"binary_name": "linux-azure-headers-6.8.0-1044"
},
{
"binary_version": "6.8.0-1044.50",
"binary_name": "linux-azure-tools-6.8.0-1044"
},
{
"binary_version": "6.8.0-1044.50",
"binary_name": "linux-buildinfo-6.8.0-1044-azure"
},
{
"binary_version": "6.8.0-1044.50",
"binary_name": "linux-cloud-tools-6.8.0-1044-azure"
},
{
"binary_version": "6.8.0-1044.50",
"binary_name": "linux-headers-6.8.0-1044-azure"
},
{
"binary_version": "6.8.0-1044.50",
"binary_name": "linux-image-unsigned-6.8.0-1044-azure"
},
{
"binary_version": "6.8.0-1044.50",
"binary_name": "linux-modules-6.8.0-1044-azure"
},
{
"binary_version": "6.8.0-1044.50",
"binary_name": "linux-modules-extra-6.8.0-1044-azure"
},
{
"binary_version": "6.8.0-1044.50",
"binary_name": "linux-modules-involflt-6.8.0-1044-azure"
},
{
"binary_version": "6.8.0-1044.50",
"binary_name": "linux-modules-iwlwifi-6.8.0-1044-azure"
},
{
"binary_version": "6.8.0-1044.50",
"binary_name": "linux-tools-6.8.0-1044-azure"
}
],
"availability": "No subscription required"
}
Database specific
source
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7935-1.json"
cves_map
{
"cves": [
{
"id": "CVE-2025-21729",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2025-37838",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2025-37958",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2025-38118",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "high"
}
]
},
{
"id": "CVE-2025-38227",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2025-38352",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "high"
}
]
},
{
"id": "CVE-2025-38616",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2025-38666",
"severity": [
{
"type": "Ubuntu",
"score": "high"
}
]
},
{
"id": "CVE-2025-38678",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2025-39964",
"severity": [
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2025-39993",
"severity": [
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2025-40018",
"severity": [
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2025-40300",
"severity": [
{
"type": "Ubuntu",
"score": "high"
}
]
}
],
"ecosystem": "Ubuntu:24.04:LTS"
}