USN-8658-2

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:

Open vSwitch;
SCTP protocol; (CVE-2026-53224, CVE-2026-53246, CVE-2026-64531)

References

Affected packages

Ubuntu:22.04:LTS / linux-ibm

Package

Name: linux-ibm
Purl: pkg:deb/ubuntu/linux-ibm?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

5.15.0-1108.112

Affected versions

5.*

5.15.0-1002.2

5.15.0-1003.3

5.15.0-1004.4

5.15.0-1005.5

5.15.0-1007.8

5.15.0-1009.11

5.15.0-1010.12

5.15.0-1012.14

5.15.0-1013.15

5.15.0-1015.17

5.15.0-1017.20

5.15.0-1018.21

5.15.0-1021.24

5.15.0-1022.25

5.15.0-1023.26

5.15.0-1025.28

5.15.0-1026.29

5.15.0-1027.30

5.15.0-1028.31

5.15.0-1029.32

5.15.0-1030.33

5.15.0-1031.34

5.15.0-1032.35

5.15.0-1033.36

5.15.0-1034.37

5.15.0-1035.38

5.15.0-1036.39

5.15.0-1037.40

5.15.0-1038.41

5.15.0-1040.43

5.15.0-1041.44

5.15.0-1042.45

5.15.0-1043.46

5.15.0-1044.47

5.15.0-1045.48

5.15.0-1046.49

5.15.0-1047.50

5.15.0-1048.51

5.15.0-1049.52

5.15.0-1050.53

5.15.0-1053.56

5.15.0-1054.57

5.15.0-1055.58

5.15.0-1056.59

5.15.0-1057.60

5.15.0-1058.61

5.15.0-1059.62

5.15.0-1060.63

5.15.0-1061.64

5.15.0-1062.65

5.15.0-1063.66

5.15.0-1064.67

5.15.0-1065.68

5.15.0-1066.69

5.15.0-1067.70

5.15.0-1068.71

5.15.0-1069.72

5.15.0-1070.73

5.15.0-1071.74

5.15.0-1072.75

5.15.0-1073.76

5.15.0-1074.77

5.15.0-1075.78

5.15.0-1076.79

5.15.0-1077.80

5.15.0-1078.81

5.15.0-1079.82

5.15.0-1080.83

5.15.0-1081.84

5.15.0-1084.87

5.15.0-1085.88

5.15.0-1086.89

5.15.0-1087.90

5.15.0-1089.92

5.15.0-1090.93

5.15.0-1091.94

5.15.0-1092.95

5.15.0-1093.96

5.15.0-1094.97

5.15.0-1095.98

5.15.0-1097.100

5.15.0-1098.101

5.15.0-1099.102

5.15.0-1100.103

5.15.0-1102.105

5.15.0-1103.106

5.15.0-1105.109

5.15.0-1106.110

5.15.0-1107.111

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "linux-buildinfo-5.15.0-1108-ibm",
            "binary_version": "5.15.0-1108.112"
        },
        {
            "binary_name": "linux-headers-5.15.0-1108-ibm",
            "binary_version": "5.15.0-1108.112"
        },
        {
            "binary_name": "linux-ibm-cloud-tools-common",
            "binary_version": "5.15.0-1108.112"
        },
        {
            "binary_name": "linux-ibm-headers-5.15.0-1108",
            "binary_version": "5.15.0-1108.112"
        },
        {
            "binary_name": "linux-ibm-source-5.15.0",
            "binary_version": "5.15.0-1108.112"
        },
        {
            "binary_name": "linux-ibm-tools-5.15.0-1108",
            "binary_version": "5.15.0-1108.112"
        },
        {
            "binary_name": "linux-ibm-tools-common",
            "binary_version": "5.15.0-1108.112"
        },
        {
            "binary_name": "linux-image-unsigned-5.15.0-1108-ibm",
            "binary_version": "5.15.0-1108.112"
        },
        {
            "binary_name": "linux-modules-5.15.0-1108-ibm",
            "binary_version": "5.15.0-1108.112"
        },
        {
            "binary_name": "linux-modules-extra-5.15.0-1108-ibm",
            "binary_version": "5.15.0-1108.112"
        },
        {
            "binary_name": "linux-tools-5.15.0-1108-ibm",
            "binary_version": "5.15.0-1108.112"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "id": "CVE-2026-53224",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "high",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2026-53246",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2026-64531",
            "severity": [
                {
                    "score": "CVSS:4.0/AV:L/AC:H/AT:N/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:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "high",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:22.04:LTS"
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8658-2.json"