UBUNTU-CVE-2022-33740

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    UBUNTU-CVE-2022-33740

    Published: 5 Jul 2022Last Modified: 9 Sept 2026
    Upstream:
    CVE-2022-33740
    Aliases:
    USN-5572-1
    USN-5572-2
    USN-5579-1

    Summary:

    Details: Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740). Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend (CVE-2022-33741, CVE-2022-33742).

    References: https://ubuntu.com/security/CVE-2022-33740, https://xenbits.xen.org/xsa/advisory-403.html, https://xenbits.xenproject.org/xsa/advisory-403.txt, http://xenbits.xen.org/xsa/advisory-403.html, http://www.openwall.com/lists/oss-security/2022/07/05/6, https://ubuntu.com/security/notices/USN-5572-1, https://ubuntu.com/security/notices/USN-5579-1, https://ubuntu.com/security/notices/USN-5572-2, https://ubuntu.com/security/notices/USN-5623-1, https://ubuntu.com/security/notices/USN-5624-1, https://ubuntu.com/security/notices/USN-5633-1, https://ubuntu.com/security/notices/USN-5635-1, https://ubuntu.com/security/notices/USN-5640-1, https://ubuntu.com/security/notices/USN-5644-1, https://ubuntu.com/security/notices/USN-5648-1, https://ubuntu.com/security/notices/USN-5655-1, https://ubuntu.com/security/notices/USN-5668-1, https://ubuntu.com/security/notices/USN-5669-1, https://ubuntu.com/security/notices/USN-5669-2, https://ubuntu.com/security/notices/USN-5677-1, https://ubuntu.com/security/notices/USN-5678-1, https://ubuntu.com/security/notices/USN-5679-1, https://ubuntu.com/security/notices/USN-5682-1, https://ubuntu.com/security/notices/USN-5683-1, https://ubuntu.com/security/notices/USN-5684-1, https://ubuntu.com/security/notices/USN-5687-1, https://ubuntu.com/security/notices/USN-5695-1, https://ubuntu.com/security/notices/USN-5706-1, https://www.cve.org/CVERecord?id=CVE-2022-33740

    Affected packages

    Package

    Name: linux-aws

    Purl: pkg:deb/ubuntu/linux-aws?arch=source&distro=trusty%2Fesm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.4.0-1112.118

    Affected versions

    4.4.0-1002.2
    4.4.0-1003.3
    4.4.0-1005.5
    4.4.0-1006.6
    4.4.0-1009.9
    4.4.0-1010.10
    4.4.0-1011.11
    4.4.0-1012.12
    4.4.0-1014.14
    4.4.0-1016.16
    4.4.0-1017.17
    4.4.0-1019.19
    4.4.0-1022.22
    4.4.0-1023.23
    4.4.0-1024.25
    4.4.0-1025.26
    4.4.0-1027.30
    4.4.0-1028.31
    4.4.0-1029.32
    4.4.0-1031.34
    4.4.0-1032.35
    4.4.0-1034.37
    4.4.0-1036.39
    4.4.0-1037.40
    4.4.0-1038.41
    4.4.0-1039.42
    4.4.0-1040.43
    4.4.0-1042.45
    4.4.0-1044.47
    4.4.0-1045.48
    4.4.0-1046.50
    4.4.0-1048.52
    4.4.0-1050.54
    4.4.0-1052.56
    4.4.0-1054.58
    4.4.0-1055.59
    4.4.0-1056.60
    4.4.0-1058.62
    4.4.0-1059.63
    4.4.0-1060.64
    4.4.0-1061.65
    4.4.0-1062.66
    4.4.0-1064.68
    4.4.0-1065.69
    4.4.0-1066.70
    4.4.0-1067.71
    4.4.0-1073.77
    4.4.0-1074.78
    4.4.0-1075.79
    4.4.0-1076.80
    4.4.0-1077.81
    4.4.0-1078.82
    4.4.0-1081.85
    4.4.0-1082.86
    4.4.0-1083.87
    4.4.0-1085.89
    4.4.0-1086.90
    4.4.0-1087.91
    4.4.0-1088.92
    4.4.0-1090.94
    4.4.0-1091.95
    4.4.0-1092.96
    4.4.0-1093.97
    4.4.0-1094.99
    4.4.0-1095.100
    4.4.0-1096.101
    4.4.0-1097.102
    4.4.0-1098.103
    4.4.0-1099.104
    4.4.0-1101.106
    4.4.0-1102.107
    4.4.0-1103.108
    4.4.0-1104.109
    4.4.0-1107.113
    4.4.0-1109.115
    4.4.0-1110.116
    4.4.0-1111.117

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    UBUNTU-CVE-2022-33740 | CVE-DB