linux-azure vulnerabilities
It was discovered that the Linux kernel did not properly handle shared page fragments during socket buffer operations, collectively known as Dirty Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the RxRPC networking subsystem when processing paged fragments. A local attacker could use this to escalate privileges, or possibly escape a container. (CVE-2026-43284, CVE-2026-43500, CVE-2026-45998, CVE-2026-46000) It was discovered that a logic flaw existed in the XFRM ESP-in-TCP subsystem in the Linux kernel when handling socket buffer fragments. This flaw is known as Fragnesia. A local attacker could use this to escalate privileges, or possibly escape a container. (CVE-2026-43503, CVE-2026-46300) Qualys discovered that a race condition existed in the ptrace subsystem of the Linux kernel when privileged processes are exiting. An unprivileged local attacker could use this issue to expose sensitive information. (CVE-2026-46333) Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0 contain a memory leak when handling AppArmor notifications. A local attacker could use this to cause resource exhaustion. (CVE-2026-47326) Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0 contain a NULL pointer dereference when handling AppArmor notifications. A local attacker could use this to cause a kernel oops. (CVE-2026-47327) Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0 contained an invalid free when handling AppArmor notif
- Products
- linux-azure
- Affected versions
- 6.17.0-1003.3, 6.17.0-1004.4, 6.19.0-1001.1, 6.19.0-1002.2, 7.0.0-1001.1, 7.0.0-1002.2, 7.0.0-1003.3, 7.0.0-1004.4
- Fixed versions
- 7.0.0-1007.7
- CVEs
- CVE-2026-43284, CVE-2026-43494, CVE-2026-43500, CVE-2026-43503, CVE-2026-45998, CVE-2026-46000, CVE-2026-46300, CVE-2026-46323, CVE-2026-46333, CVE-2026-47326, CVE-2026-47327, CVE-2026-47328, CVE-2026-47329, CVE-2026-47330, CVE-2026-47332, CVE-2026-47333, CVE-2026-47334, CVE-2026-47337
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:26 UTC · Revision 1
Source evidence
It was discovered that the Linux kernel did not properly handle shared page fragments during socket buffer operations, collectively known as Dirty Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the RxRPC networking subsystem when processing paged fragments. A local attacker could use this to escalate privileges, or possibly escape a container. (CVE-2026-43284, CVE-2026-43500, CVE-2026-45998, CVE-2026-46000) It was discovered that a logic flaw existed in the XFRM ESP-in-TCP subsystem in the Linux kernel when handling socket buffer fragments. This flaw is known as Fragnesia. A local attacker could use this to escalate privileges, or possibly escape a container. (CVE-2026-43503, CVE-2026-46300) Qualys discovered that a race condition existed in the ptrace subsystem of the Linux kernel when privileged processes are exiting. An unprivileged local attacker could use this issue to expose sensitive information. (CVE-2026-46333) Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0 contain a memory leak when handling AppArmor notifications. A local attacker could use this to cause resource exhaustion. (CVE-2026-47326) Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0 contain a NULL pointer dereference when handling AppArmor notifications. A local attacker could use this to cause a kernel oops. (CVE-2026-47327) Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0 contained an invalid free when handling AppArmor notif
osv:USN-8461-1
linux-azure
Fixed versions: 7.0.0-1007.7
Complete source record
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"url": "https://osv.dev/vulnerability/USN-8461-1",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "linux-azure vulnerabilities",
"summary": "It was discovered that the Linux kernel did not properly handle shared page fragments during socket buffer operations, collectively known as Dirty Frag. A logic flaw existed in the XFRM ESP-in-TCP subsystem and in the RxRPC networking subsystem when processing paged fragments. A local attacker could use this to escalate privileges, or possibly escape a container. (CVE-2026-43284, CVE-2026-43500, CVE-2026-45998, CVE-2026-46000) It was discovered that a logic flaw existed in the XFRM ESP-in-TCP subsystem in the Linux kernel when handling socket buffer fragments. This flaw is known as Fragnesia. A local attacker could use this to escalate privileges, or possibly escape a container. (CVE-2026-43503, CVE-2026-46300) Qualys discovered that a race condition existed in the ptrace subsystem of the Linux kernel when privileged processes are exiting. An unprivileged local attacker could use this issue to expose sensitive information. (CVE-2026-46333) Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0 contain a memory leak when handling AppArmor notifications. A local attacker could use this to cause resource exhaustion. (CVE-2026-47326) Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0 contain a NULL pointer dereference when handling AppArmor notifications. A local attacker could use this to cause a kernel oops. (CVE-2026-47327) Tristan Madani discovered that Ubuntu Linux kernel 6.8, 6.17 and 7.0 contained an invalid free when handling AppArmor notif",
"evidence": "osv:USN-8461-1",
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{
"name": {
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"evidence": "/affected/0/package/name"
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"evidence": "/affected/0/versions"
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{
"value": "6.17.0-1004.4",
"evidence": "/affected/0/versions"
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{
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"evidence": "/affected/0/versions"
},
{
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{
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"evidence": "/affected/0/versions"
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{
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{
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"ranges": [
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"events": [
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"package": {
"name": "linux-azure",
"purl": "pkg:deb/ubuntu/linux-azure?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"6.17.0-1003.3",
"6.17.0-1004.4",
"6.19.0-1001.1",
"6.19.0-1002.2",
"7.0.0-1001.1",
"7.0.0-1002.2",
"7.0.0-1003.3",
"7.0.0-1004.4"
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"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8461-1.json",
"cves_map": {
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{
"id": "CVE-2026-43284",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "high"
}
]
},
{
"id": "CVE-2026-43494",
"severity": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"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-2026-43500",
"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": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"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-2026-43503",
"severity": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "high"
}
]
},
{
"id": "CVE-2026-45998",
"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": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-46000",
"severity": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N"
},
{
"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-2026-46300",
"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": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"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-2026-46323",
"severity": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"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-2026-46333",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"
},
{
"type": "Ubuntu",
"score": "high"
}
]
},
{
"id": "CVE-2026-47326",
"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-2026-47327",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-47328",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-47329",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2026-47330",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2026-47332",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-47333",
"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-2026-47334",
"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-2026-47337",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
],
"ecosystem": "Ubuntu:26.04:LTS"
}
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "linux-azure-cloud-tools-7.0.0-1007",
"binary_version": "7.0.0-1007.7"
},
{
"binary_name": "linux-azure-headers-7.0.0-1007",
"binary_version": "7.0.0-1007.7"
},
{
"binary_name": "linux-azure-tools-7.0.0-1007",
"binary_version": "7.0.0-1007.7"
},
{
"binary_name": "linux-buildinfo-7.0.0-1007-azure",
"binary_version": "7.0.0-1007.7"
},
{
"binary_name": "linux-cloud-tools-7.0.0-1007-azure",
"binary_version": "7.0.0-1007.7"
},
{
"binary_name": "linux-headers-7.0.0-1007-azure",
"binary_version": "7.0.0-1007.7"
},
{
"binary_name": "linux-image-unsigned-7.0.0-1007-azure",
"binary_version": "7.0.0-1007.7"
},
{
"binary_name": "linux-modules-7.0.0-1007-azure",
"binary_version": "7.0.0-1007.7"
},
{
"binary_name": "linux-tools-7.0.0-1007-azure",
"binary_version": "7.0.0-1007.7"
}
],
"availability": "No subscription required"
}
}
],
"modified": "2026-10-17T12:54:58.800050839Z",
"provider": "osv",
"upstream": [
"CVE-2026-43284",
"CVE-2026-43494",
"CVE-2026-43500",
"CVE-2026-43503",
"CVE-2026-45998",
"CVE-2026-46000",
"CVE-2026-46300",
"CVE-2026-46323",
"CVE-2026-46333",
"CVE-2026-47326",
"CVE-2026-47327",
"CVE-2026-47328",
"CVE-2026-47329",
"CVE-2026-47330",
"CVE-2026-47332",
"CVE-2026-47333",
"CVE-2026-47334",
"CVE-2026-47337",
"UBUNTU-CVE-2026-43284",
"UBUNTU-CVE-2026-43494",
"UBUNTU-CVE-2026-43500",
"UBUNTU-CVE-2026-43503",
"UBUNTU-CVE-2026-45998",
"UBUNTU-CVE-2026-46000",
"UBUNTU-CVE-2026-46300",
"UBUNTU-CVE-2026-46323",
"UBUNTU-CVE-2026-46333",
"UBUNTU-CVE-2026-47326",
"UBUNTU-CVE-2026-47327",
"UBUNTU-CVE-2026-47328",
"UBUNTU-CVE-2026-47329",
"UBUNTU-CVE-2026-47330",
"UBUNTU-CVE-2026-47332",
"UBUNTU-CVE-2026-47333",
"UBUNTU-CVE-2026-47334",
"UBUNTU-CVE-2026-47337"
],
"references": [
"https://ubuntu.com/security/notices/USN-8461-1",
"https://ubuntu.com/security/CVE-2026-43284",
"https://ubuntu.com/security/CVE-2026-43494",
"https://ubuntu.com/security/CVE-2026-43500",
"https://ubuntu.com/security/CVE-2026-43503",
"https://ubuntu.com/security/CVE-2026-45998",
"https://ubuntu.com/security/CVE-2026-46000",
"https://ubuntu.com/security/CVE-2026-46300",
"https://ubuntu.com/security/CVE-2026-46323",
"https://ubuntu.com/security/CVE-2026-46333",
"https://ubuntu.com/security/CVE-2026-47326",
"https://ubuntu.com/security/CVE-2026-47327",
"https://ubuntu.com/security/CVE-2026-47328",
"https://ubuntu.com/security/CVE-2026-47329",
"https://ubuntu.com/security/CVE-2026-47330",
"https://ubuntu.com/security/CVE-2026-47332",
"https://ubuntu.com/security/CVE-2026-47333",
"https://ubuntu.com/security/CVE-2026-47334",
"https://ubuntu.com/security/CVE-2026-47337"
]
},
"related_cves": [
{
"value": "CVE-2026-43284",
"evidence": "/upstream"
},
{
"value": "CVE-2026-43494",
"evidence": "/upstream"
},
{
"value": "CVE-2026-43500",
"evidence": "/upstream"
},
{
"value": "CVE-2026-43503",
"evidence": "/upstream"
},
{
"value": "CVE-2026-45998",
"evidence": "/upstream"
},
{
"value": "CVE-2026-46000",
"evidence": "/upstream"
},
{
"value": "CVE-2026-46300",
"evidence": "/upstream"
},
{
"value": "CVE-2026-46323",
"evidence": "/upstream"
},
{
"value": "CVE-2026-46333",
"evidence": "/upstream"
},
{
"value": "CVE-2026-47326",
"evidence": "/upstream"
},
{
"value": "CVE-2026-47327",
"evidence": "/upstream"
},
{
"value": "CVE-2026-47328",
"evidence": "/upstream"
},
{
"value": "CVE-2026-47329",
"evidence": "/upstream"
},
{
"value": "CVE-2026-47330",
"evidence": "/upstream"
},
{
"value": "CVE-2026-47332",
"evidence": "/upstream"
},
{
"value": "CVE-2026-47333",
"evidence": "/upstream"
},
{
"value": "CVE-2026-47334",
"evidence": "/upstream"
},
{
"value": "CVE-2026-47337",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 353611,
"published_at": "2026-06-22T22:51:13+00:00"
}