UBUNTU-CVE-2023-52629

    Dashboard / Vulnerabilities / UBUNTU-CVE-2023-52629

    UBUNTU-CVE-2023-52629

    Published: 29 Mar 2024Last Modified: 8 Oct 2026
    Upstream:
    CVE-2023-52629
    Aliases:
    USN-6972-1
    USN-6972-2
    USN-6972-3

    Summary:

    Details: In the Linux kernel, the following vulnerability has been resolved: sh: push-switch: Reorder cleanup operations to avoid use-after-free bug The original code puts flush_work() before timer_shutdown_sync() in switch_drv_remove(). Although we use flush_work() to stop the worker, it could be rescheduled in switch_timer(). As a result, a use-after-free bug can occur. The details are shown below: (cpu 0) | (cpu 1) switch_drv_remove() | flush_work() | ... | switch_timer // timer | schedule_work(&psw->work) timer_shutdown_sync() | ... | switch_work_handler // worker kfree(psw) // free | | psw->state = 0 // use This patch puts timer_shutdown_sync() before flush_work() to mitigate the bugs. As a result, the worker and timer will be stopped safely before the deallocate operations.

    References: https://ubuntu.com/security/CVE-2023-52629, https://git.kernel.org/linus/246f80a0b17f8f582b2c0996db02998239057c65, https://git.kernel.org/stable/c/610dbd8ac271aa36080aac50b928d700ee3fe4de, https://git.kernel.org/stable/c/246f80a0b17f8f582b2c0996db02998239057c65, https://www.cve.org/CVERecord?id=CVE-2023-52629, https://ubuntu.com/security/notices/USN-6972-1, https://ubuntu.com/security/notices/USN-6973-1, https://ubuntu.com/security/notices/USN-6974-1, https://ubuntu.com/security/notices/USN-6976-1, https://ubuntu.com/security/notices/USN-6972-2, https://ubuntu.com/security/notices/USN-6972-3, https://ubuntu.com/security/notices/USN-6973-2, https://ubuntu.com/security/notices/USN-6974-2, https://ubuntu.com/security/notices/USN-6973-3, https://ubuntu.com/security/notices/USN-6972-4, https://ubuntu.com/security/notices/USN-6973-4, https://ubuntu.com/security/notices/USN-7006-1, https://ubuntu.com/security/notices/USN-7019-1

    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 -4.4.0-1135.141

    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
    4.4.0-1113.119
    4.4.0-1114.120
    4.4.0-1115.121
    4.4.0-1116.122
    4.4.0-1117.123
    4.4.0-1118.124
    4.4.0-1119.125
    4.4.0-1120.126
    4.4.0-1121.127
    4.4.0-1122.128
    4.4.0-1123.129
    4.4.0-1124.130
    4.4.0-1125.131
    4.4.0-1127.133
    4.4.0-1128.134
    4.4.0-1129.135
    4.4.0-1130.136
    4.4.0-1131.137
    4.4.0-1133.139
    4.4.0-1134.140

    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-2023-52629 | CVE-DB