UBUNTU-CVE-2021-33655

    Dashboard / Vulnerabilities / UBUNTU-CVE-2021-33655

    UBUNTU-CVE-2021-33655

    Published: 18 Jul 2022Last Modified: 9 Sept 2026
    Upstream:
    CVE-2021-33655
    Aliases:
    USN-5577-1
    USN-5580-1
    USN-5596-1

    Summary:

    Details: When sending malicous data to kernel by ioctl cmd FBIOPUT_VSCREENINFO,kernel will write memory out of bounds.

    References: https://ubuntu.com/security/CVE-2021-33655, https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=086ff84617185393a0bbf25830c4f36412a7d3f4, https://ubuntu.com/security/notices/USN-5577-1, https://ubuntu.com/security/notices/USN-5580-1, https://ubuntu.com/security/notices/USN-5596-1, https://ubuntu.com/security/notices/USN-5621-1, https://ubuntu.com/security/notices/USN-5622-1, https://ubuntu.com/security/notices/USN-5623-1, https://ubuntu.com/security/notices/USN-5624-1, https://ubuntu.com/security/notices/USN-5630-1, https://ubuntu.com/security/notices/USN-5633-1, https://ubuntu.com/security/notices/USN-5635-1, https://ubuntu.com/security/notices/USN-5639-1, https://ubuntu.com/security/notices/USN-5640-1, https://ubuntu.com/security/notices/USN-5644-1, https://ubuntu.com/security/notices/USN-5647-1, https://ubuntu.com/security/notices/USN-5648-1, https://ubuntu.com/security/notices/USN-5650-1, https://ubuntu.com/security/notices/USN-5652-1, https://ubuntu.com/security/notices/USN-5654-1, https://ubuntu.com/security/notices/USN-5655-1, https://ubuntu.com/security/notices/USN-5660-1, https://ubuntu.com/security/notices/USN-5683-1, https://www.cve.org/CVERecord?id=CVE-2021-33655

    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 -4.4.0-1113.119

    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
    4.4.0-1112.118

    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-2021-33655 | CVE-DB