UBUNTU-CVE-2022-50567

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    UBUNTU-CVE-2022-50567

    Published: 22 Oct 2025Last Modified: 5 Oct 2026
    Upstream:
    CVE-2022-50567

    Summary:

    Details: In the Linux kernel, the following vulnerability has been resolved: fs: jfs: fix shift-out-of-bounds in dbAllocAG Syzbot found a crash : UBSAN: shift-out-of-bounds in dbAllocAG. The underlying bug is the missing check of bmp->db_agl2size. The field can be greater than 64 and trigger the shift-out-of-bounds. Fix this bug by adding a check of bmp->db_agl2size in dbMount since this field is used in many following functions. The upper bound for this field is L2MAXL2SIZE - L2MAXAG, thanks for the help of Dave Kleikamp. Note that, for maintenance, I reorganized error handling code of dbMount.

    References: https://ubuntu.com/security/CVE-2022-50567, https://www.cve.org/CVERecord?id=CVE-2022-50567, https://git.kernel.org/linus/898f706695682b9954f280d95e49fa86ffa55d08, https://git.kernel.org/stable/c/0536f76a2bca83d1a3740517ba22cc93a44b3099, https://git.kernel.org/stable/c/2c575c8905f7a8b32d5611b91856b69bac2a5bf1, https://git.kernel.org/stable/c/3115313cf03113e87c87adee18ee49a20bbdb9ba, https://git.kernel.org/stable/c/359616ce587e524107730504891afa4b1a8be58c, https://git.kernel.org/stable/c/3e997e4ce8ae7ab89d72334120f6aee49c5bbdbd, https://git.kernel.org/stable/c/67973caae78e21ee46a7281aaa8ca364eb9c444f, https://git.kernel.org/stable/c/898f706695682b9954f280d95e49fa86ffa55d08, https://git.kernel.org/stable/c/d3b486946a4e62c7ef6023f7d9c1d049051384ba, https://git.kernel.org/stable/c/eea87acb6027be3dd4d3c57186bb22800d57fdda

    Affected packages

    Package

    Name: linux-azure

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.15.0-1162.177~14.04.1

    Affected versions

    4.15.0-1023.24~14.04.1
    4.15.0-1030.31~14.04.1
    4.15.0-1031.32~14.04.1
    4.15.0-1032.33~14.04.2
    4.15.0-1035.36~14.04.2
    4.15.0-1036.38~14.04.2
    4.15.0-1037.39~14.04.2
    4.15.0-1039.41~14.04.2
    4.15.0-1040.44~14.04.1
    4.15.0-1041.45~14.04.1
    4.15.0-1042.46~14.04.1
    4.15.0-1045.49~14.04.1
    4.15.0-1046.50~14.04.1
    4.15.0-1047.51~14.04.1
    4.15.0-1049.54~14.04.1
    4.15.0-1050.55~14.04.1
    4.15.0-1051.56~14.04.1
    4.15.0-1052.57~14.04.1
    4.15.0-1055.60~14.04.1
    4.15.0-1056.61~14.04.1
    4.15.0-1057.62~14.04.1
    4.15.0-1059.64~14.04.1
    4.15.0-1060.65~14.04.1
    4.15.0-1061.66~14.04.1
    4.15.0-1063.68~14.04.1
    4.15.0-1064.69~14.04.1
    4.15.0-1066.71~14.04.1
    4.15.0-1067.72~14.04.1
    4.15.0-1069.74~14.04.1
    4.15.0-1071.76~14.04.1
    4.15.0-1074.79~14.04.1
    4.15.0-1077.82~14.04.1
    4.15.0-1082.92~14.04.1
    4.15.0-1083.93~14.04.1
    4.15.0-1089.99~14.04.1
    4.15.0-1091.101~14.04.1
    4.15.0-1092.102~14.04.1
    4.15.0-1093.103~14.04.1
    4.15.0-1095.105~14.04.1
    4.15.0-1096.106~14.04.1
    4.15.0-1098.109~14.04.1
    4.15.0-1100.111~14.04.1
    4.15.0-1102.113~14.04.1
    4.15.0-1103.114~14.04.1
    4.15.0-1106.118~14.04.1
    4.15.0-1108.120~14.04.1
    4.15.0-1109.121~14.04.1
    4.15.0-1110.122~14.04.1
    4.15.0-1111.123~14.04.1
    4.15.0-1112.124~14.04.1
    4.15.0-1113.126~14.04.1
    4.15.0-1114.127~14.04.1
    4.15.0-1115.128~14.04.1
    4.15.0-1118.131~14.04.1
    4.15.0-1121.134~14.04.1
    4.15.0-1122.135~14.04.1
    4.15.0-1123.136~14.04.1
    4.15.0-1124.137~14.04.1
    4.15.0-1125.138~14.04.1
    4.15.0-1126.139~14.04.1
    4.15.0-1127.140~14.04.1
    4.15.0-1129.142~14.04.1
    4.15.0-1130.143~14.04.1
    4.15.0-1131.144~14.04.1
    4.15.0-1133.146~14.04.1
    4.15.0-1134.147~14.04.1
    4.15.0-1136.149~14.04.1
    4.15.0-1137.150~14.04.1
    4.15.0-1138.151~14.04.1
    4.15.0-1139.152~14.04.1
    4.15.0-1142.156~14.04.1
    4.15.0-1145.160~14.04.1
    4.15.0-1146.161~14.04.1
    4.15.0-1149.164~14.04.1
    4.15.0-1150.165~14.04.1
    4.15.0-1151.166~14.04.1
    4.15.0-1153.168~14.04.1
    4.15.0-1157.172~14.04.2
    4.15.0-1158.173~14.04.1
    4.15.0-1159.174~14.04.1

    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-2022-50567 | CVE-DB