USN-8305-1

It was discovered that the Linux kernel algif_aead module did not properly handle in-place cryptographic operations. This flaw is known as Copy Fail. A local attacker could use this to escalate privileges, or possibly escape a container. (CVE-2026-31431)

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; - Ethernet bonding driver; - Packet sockets; - TLS protocol; (CVE-2026-31419, CVE-2026-31504, CVE-2026-31533, CVE-2026-43033, CVE-2026-43077, CVE-2026-43078)

References

Affected packages

Ubuntu:Pro:Realtime:22.04:LTS / linux-intel-iot-realtime

Package

Name: linux-intel-iot-realtime
Purl: pkg:deb/ubuntu/linux-intel-iot-realtime?arch=source&distro=realtime%2Fjammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.15.0-1100.102

Affected versions

5.*

5.15.0-1021.26

5.15.0-1022.27

5.15.0-1023.28

5.15.0-1024.29

5.15.0-1028.33

5.15.0-1033.35

5.15.0-1034.36

5.15.0-1035.37

5.15.0-1036.38

5.15.0-1037.39

5.15.0-1038.40

5.15.0-1039.41

5.15.0-1040.42

5.15.0-1041.43

5.15.0-1042.44

5.15.0-1043.45

5.15.0-1044.46

5.15.0-1046.48

5.15.0-1047.49

5.15.0-1048.50

5.15.0-1049.51

5.15.0-1050.52

5.15.0-1053.55

5.15.0-1054.56

5.15.0-1055.57

5.15.0-1056.58

5.15.0-1057.59

5.15.0-1058.60

5.15.0-1059.61

5.15.0-1060.62

5.15.0-1061.63

5.15.0-1063.65

5.15.0-1064.66

5.15.0-1066.68

5.15.0-1071.73

5.15.0-1072.74

5.15.0-1073.75

5.15.0-1074.76

5.15.0-1075.77

5.15.0-1076.78

5.15.0-1077.79

5.15.0-1078.80

5.15.0-1079.81

5.15.0-1080.82

5.15.0-1081.83

5.15.0-1082.84

5.15.0-1083.85

5.15.0-1084.86

5.15.0-1085.87

5.15.0-1086.88

5.15.0-1087.89

5.15.0-1088.90

5.15.0-1089.91

5.15.0-1090.92

5.15.0-1091.93

5.15.0-1092.94

5.15.0-1093.95

5.15.0-1094.96

5.15.0-1096.98

5.15.0-1097.99

5.15.0-1098.100

5.15.0-1099.101

Ecosystem specific

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "5.15.0-1100.102",
            "binary_name": "linux-buildinfo-5.15.0-1100-intel-iot-realtime"
        },
        {
            "binary_version": "5.15.0-1100.102",
            "binary_name": "linux-cloud-tools-5.15.0-1100-intel-iot-realtime"
        },
        {
            "binary_version": "5.15.0-1100.102",
            "binary_name": "linux-headers-5.15.0-1100-intel-iot-realtime"
        },
        {
            "binary_version": "5.15.0-1100.102",
            "binary_name": "linux-image-unsigned-5.15.0-1100-intel-iot-realtime"
        },
        {
            "binary_version": "5.15.0-1100.102",
            "binary_name": "linux-intel-iot-realtime-cloud-tools-5.15.0-1100"
        },
        {
            "binary_version": "5.15.0-1100.102",
            "binary_name": "linux-intel-iot-realtime-cloud-tools-common"
        },
        {
            "binary_version": "5.15.0-1100.102",
            "binary_name": "linux-intel-iot-realtime-headers-5.15.0-1100"
        },
        {
            "binary_version": "5.15.0-1100.102",
            "binary_name": "linux-intel-iot-realtime-tools-5.15.0-1100"
        },
        {
            "binary_version": "5.15.0-1100.102",
            "binary_name": "linux-intel-iot-realtime-tools-common"
        },
        {
            "binary_version": "5.15.0-1100.102",
            "binary_name": "linux-intel-iot-realtime-tools-host"
        },
        {
            "binary_version": "5.15.0-1100.102",
            "binary_name": "linux-modules-5.15.0-1100-intel-iot-realtime"
        },
        {
            "binary_version": "5.15.0-1100.102",
            "binary_name": "linux-modules-extra-5.15.0-1100-intel-iot-realtime"
        },
        {
            "binary_version": "5.15.0-1100.102",
            "binary_name": "linux-tools-5.15.0-1100-intel-iot-realtime"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8305-1.json"

cves_map

{
    "ecosystem": "Ubuntu:Pro:Realtime:22.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-31419",
            "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-2026-31431",
            "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-2026-31504",
            "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-2026-31533",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2026-43033",
            "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-2026-43077",
            "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-2026-43078",
            "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"
                }
            ]
        }
    ]
}