UBUNTU-CVE-2023-52488

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    UBUNTU-CVE-2023-52488

    Published: 11 Mar 2024Last Modified: 22 Sept 2026
    Upstream:
    CVE-2023-52488
    Aliases:
    USN-6818-1
    USN-6818-2
    USN-6818-3

    Summary:

    Details: In the Linux kernel, the following vulnerability has been resolved: serial: sc16is7xx: convert from _raw_ to _noinc_ regmap functions for FIFO The SC16IS7XX IC supports a burst mode to access the FIFOs where the initial register address is sent ($00), followed by all the FIFO data without having to resend the register address each time. In this mode, the IC doesn't increment the register address for each R/W byte. The regmap_raw_read() and regmap_raw_write() are functions which can perform IO over multiple registers. They are currently used to read/write from/to the FIFO, and although they operate correctly in this burst mode on the SPI bus, they would corrupt the regmap cache if it was not disabled manually. The reason is that when the R/W size is more than 1 byte, these functions assume that the register address is incremented and handle the cache accordingly. Convert FIFO R/W functions to use the regmap _noinc_ versions in order to remove the manual cache control which was a workaround when using the _raw_ versions. FIFO registers are properly declared as volatile so cache will not be used/updated for FIFO accesses.

    References: https://ubuntu.com/security/CVE-2023-52488, https://git.kernel.org/linus/dbf4ab821804df071c8b566d9813083125e6d97b, https://git.kernel.org/stable/c/416b10d2817c94db86829fb92ad43ce7d002c573, https://git.kernel.org/stable/c/084c24e788d9cf29c55564de368bf5284f2bb5db, https://git.kernel.org/stable/c/aa7cb4787698add9367b19f7afc667662c9bdb23, https://git.kernel.org/stable/c/dbf4ab821804df071c8b566d9813083125e6d97b, https://www.cve.org/CVERecord?id=CVE-2023-52488, https://ubuntu.com/security/notices/USN-6818-1, https://ubuntu.com/security/notices/USN-6819-1, https://ubuntu.com/security/notices/USN-6818-2, https://ubuntu.com/security/notices/USN-6819-2, https://ubuntu.com/security/notices/USN-6819-3, https://ubuntu.com/security/notices/USN-6818-3, https://ubuntu.com/security/notices/USN-6818-4, https://ubuntu.com/security/notices/USN-6819-4, https://ubuntu.com/security/notices/USN-6898-1, https://ubuntu.com/security/notices/USN-6898-2, https://ubuntu.com/security/notices/USN-6898-3, https://ubuntu.com/security/notices/USN-6898-4, https://ubuntu.com/security/notices/USN-6917-1, https://ubuntu.com/security/notices/USN-6919-1, https://ubuntu.com/security/notices/USN-6927-1, https://ubuntu.com/security/notices/USN-7019-1, https://ubuntu.com/security/notices/USN-7159-1, https://ubuntu.com/security/notices/USN-7159-2, https://ubuntu.com/security/notices/USN-7159-3, https://ubuntu.com/security/notices/USN-7159-4, https://ubuntu.com/security/notices/USN-7159-5, https://ubuntu.com/security/notices/USN-7195-1, https://ubuntu.com/security/notices/USN-7195-2, https://ubuntu.com/security/notices/USN-7332-1, https://ubuntu.com/security/notices/USN-7342-1, https://ubuntu.com/security/notices/USN-7344-1, https://ubuntu.com/security/notices/USN-7332-2, https://ubuntu.com/security/notices/USN-7332-3, https://ubuntu.com/security/notices/USN-7344-2

    Affected packages

    Package

    Name: linux-aws

    Purl: pkg:deb/ubuntu/linux-aws?arch=source&distro=esm-infra-legacy%2Ftrusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.4.0-1141.147

    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
    4.4.0-1135.141
    4.4.0-1136.142
    4.4.0-1137.143
    4.4.0-1138.144
    4.4.0-1139.145
    4.4.0-1140.146

    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