USN-8801-1

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Source
https://ubuntu.com/security/notices/USN-8801-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8801-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8801-1
Upstream
CVE (5)
Related
UBUNTU (5)
Published
2026-09-22T10:17:44Z
Modified
2026-09-22T15:42:31Z
Summary
linux-azure-fde, linux-azure-fde-7.0 vulnerabilities
Details

It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges. (CVE-2025-10263)

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:

  • Character device driver;
  • Networking core;
  • IPv6 networking;
  • Unix domain sockets; (CVE-2026-52938, CVE-2026-53325, CVE-2026-53361, CVE-2026-53362)
References

Affected packages

Ubuntu:24.04:LTS / linux-azure-fde-7.0

Package

Name
linux-azure-fde-7.0
Purl
pkg:deb/ubuntu/linux-azure-fde-7.0?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
7.0.0-1013.13~24.04.1

Affected versions

7.*
7.0.0-1007.7~24.04.3

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "linux-azure-fde-7.0-cloud-tools-7.0.0-1013",
            "binary_version":  "7.0.0-1013.13~24.04.1"
        },
        {
            "binary_name":  "linux-azure-fde-7.0-headers-7.0.0-1013",
            "binary_version":  "7.0.0-1013.13~24.04.1"
        },
        {
            "binary_name":  "linux-azure-fde-7.0-tools-7.0.0-1013",
            "binary_version":  "7.0.0-1013.13~24.04.1"
        },
        {
            "binary_name":  "linux-buildinfo-7.0.0-1013-azure-fde",
            "binary_version":  "7.0.0-1013.13~24.04.1"
        },
        {
            "binary_name":  "linux-cloud-tools-7.0.0-1013-azure-fde",
            "binary_version":  "7.0.0-1013.13~24.04.1"
        },
        {
            "binary_name":  "linux-headers-7.0.0-1013-azure-fde",
            "binary_version":  "7.0.0-1013.13~24.04.1"
        },
        {
            "binary_name":  "linux-image-unsigned-7.0.0-1013-azure-fde",
            "binary_version":  "7.0.0-1013.13~24.04.1"
        },
        {
            "binary_name":  "linux-modules-7.0.0-1013-azure-fde",
            "binary_version":  "7.0.0-1013.13~24.04.1"
        },
        {
            "binary_name":  "linux-modules-iwlwifi-7.0.0-1013-azure-fde",
            "binary_version":  "7.0.0-1013.13~24.04.1"
        },
        {
            "binary_name":  "linux-tools-7.0.0-1013-azure-fde",
            "binary_version":  "7.0.0-1013.13~24.04.1"
        }
    ]
}

Database specific

cves_map 
{
    "cves":  [
        {
            "id":  "CVE-2025-10263",
            "severity":  [
                {
                    "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_V4"
                },
                {
                    "score":  "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "high",
                    "type":  "Ubuntu"
                }
            ]
        },
        {
            "id":  "CVE-2026-52938",
            "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-2026-53325",
            "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-2026-53361",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        },
        {
            "id":  "CVE-2026-53362",
            "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"
                }
            ]
        }
    ],
    "ecosystem":  "Ubuntu:24.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8801-1.json"

Ubuntu:26.04:LTS / linux-azure-fde

Package

Name
linux-azure-fde
Purl
pkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
7.0.0-1013.13

Affected versions

7.*
7.0.0-1003.3
7.0.0-1004.4
7.0.0-1006.6
7.0.0-1008.8
7.0.0-1009.9
7.0.0-1010.10
7.0.0-1011.11

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "linux-azure-fde-cloud-tools-7.0.0-1013",
            "binary_version":  "7.0.0-1013.13"
        },
        {
            "binary_name":  "linux-azure-fde-headers-7.0.0-1013",
            "binary_version":  "7.0.0-1013.13"
        },
        {
            "binary_name":  "linux-azure-fde-tools-7.0.0-1013",
            "binary_version":  "7.0.0-1013.13"
        },
        {
            "binary_name":  "linux-buildinfo-7.0.0-1013-azure-fde",
            "binary_version":  "7.0.0-1013.13"
        },
        {
            "binary_name":  "linux-cloud-tools-7.0.0-1013-azure-fde",
            "binary_version":  "7.0.0-1013.13"
        },
        {
            "binary_name":  "linux-headers-7.0.0-1013-azure-fde",
            "binary_version":  "7.0.0-1013.13"
        },
        {
            "binary_name":  "linux-image-unsigned-7.0.0-1013-azure-fde",
            "binary_version":  "7.0.0-1013.13"
        },
        {
            "binary_name":  "linux-modules-7.0.0-1013-azure-fde",
            "binary_version":  "7.0.0-1013.13"
        },
        {
            "binary_name":  "linux-tools-7.0.0-1013-azure-fde",
            "binary_version":  "7.0.0-1013.13"
        }
    ]
}

Database specific

cves_map 
{
    "cves":  [
        {
            "id":  "CVE-2025-10263",
            "severity":  [
                {
                    "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_V4"
                },
                {
                    "score":  "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "high",
                    "type":  "Ubuntu"
                }
            ]
        },
        {
            "id":  "CVE-2026-52938",
            "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-2026-53325",
            "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-2026-53361",
            "severity":  [
                {
                    "score":  "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
                    "type":  "CVSS_V3"
                },
                {
                    "score":  "medium",
                    "type":  "Ubuntu"
                }
            ]
        },
        {
            "id":  "CVE-2026-53362",
            "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"
                }
            ]
        }
    ],
    "ecosystem":  "Ubuntu:26.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8801-1.json"