USN-5598-1

It was discovered that the virtual terminal driver in the Linux kernel did not properly handle VGA console font changes, leading to an out-of-bounds write. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

References

Affected packages

Ubuntu:18.04:LTS / linux-oracle

Package

Name: linux-oracle
Purl: pkg:deb/ubuntu/linux-oracle@4.15.0-1105.116?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

4.15.0-1105.116

Affected versions

4.*

4.15.0-1007.9

4.15.0-1008.10

4.15.0-1009.11

4.15.0-1010.12

4.15.0-1011.13

4.15.0-1013.15

4.15.0-1014.16

4.15.0-1015.17

4.15.0-1017.19

4.15.0-1018.20

4.15.0-1021.23

4.15.0-1022.25

4.15.0-1023.26

4.15.0-1025.28

4.15.0-1026.29

4.15.0-1027.30

4.15.0-1029.32

4.15.0-1030.33

4.15.0-1031.34

4.15.0-1033.36

4.15.0-1035.39

4.15.0-1037.41

4.15.0-1038.42

4.15.0-1039.43

4.15.0-1045.49

4.15.0-1047.51

4.15.0-1048.52

4.15.0-1050.54

4.15.0-1051.55

4.15.0-1053.57

4.15.0-1054.58

4.15.0-1057.62

4.15.0-1058.64

4.15.0-1059.65

4.15.0-1061.67

4.15.0-1062.68

4.15.0-1063.70

4.15.0-1064.71

4.15.0-1065.73

4.15.0-1066.74

4.15.0-1067.75

4.15.0-1068.76

4.15.0-1069.77

4.15.0-1070.78

4.15.0-1071.79

4.15.0-1072.80

4.15.0-1075.83

4.15.0-1078.86

4.15.0-1079.87

4.15.0-1080.88

4.15.0-1081.89

4.15.0-1082.90

4.15.0-1083.91

4.15.0-1084.92

4.15.0-1085.93

4.15.0-1086.94

4.15.0-1087.95

4.15.0-1089.98

4.15.0-1090.99

4.15.0-1091.100

4.15.0-1092.101

4.15.0-1093.102

4.15.0-1095.104

4.15.0-1098.108

4.15.0-1101.112

4.15.0-1102.113

4.15.0-1104.115

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "linux-buildinfo-4.15.0-1105-oracle",
            "binary_version": "4.15.0-1105.116"
        },
        {
            "binary_name": "linux-headers-4.15.0-1105-oracle",
            "binary_version": "4.15.0-1105.116"
        },
        {
            "binary_name": "linux-image-unsigned-4.15.0-1105-oracle",
            "binary_version": "4.15.0-1105.116"
        },
        {
            "binary_name": "linux-modules-4.15.0-1105-oracle",
            "binary_version": "4.15.0-1105.116"
        },
        {
            "binary_name": "linux-modules-extra-4.15.0-1105-oracle",
            "binary_version": "4.15.0-1105.116"
        },
        {
            "binary_name": "linux-oracle-headers-4.15.0-1105",
            "binary_version": "4.15.0-1105.116"
        },
        {
            "binary_name": "linux-oracle-tools-4.15.0-1105",
            "binary_version": "4.15.0-1105.116"
        },
        {
            "binary_name": "linux-tools-4.15.0-1105-oracle",
            "binary_version": "4.15.0-1105.116"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5598-1.json"

cves_map

{
    "ecosystem": "Ubuntu:18.04:LTS",
    "cves": [
        {
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2021-33656"
        }
    ]
}