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Vulnerability · Published Feb 29, 2024 · Assigned by Linux

CVE-2023-52494bus: mhi: host: Add alignment check for event ring read pointer

High 7.8

In plain English

A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.3%top 79.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: bus: mhi: host: Add alignment check for event ring read pointer Though we do check the event ring read pointer by "is_valid_ring_ptr" to make sure it is in the buffer range, but there is another risk the pointer may be not aligned. Since we are expecting event ring elements are 128 bits(struct mhi_ring_element) aligned, an unaligned read pointer could lead to multiple issues like DoS or ring buffer memory corruption. So add a alignment check for event ring read pointer.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.76-1DEBIAN-CVE-2023-52494
Debian:13linux6.6.15-1DEBIAN-CVE-2023-52494
Debian:14linux6.6.15-1DEBIAN-CVE-2023-52494
Ubuntu:22.04:LTSlinux5.15.0-106.116UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux5.15.0-106.116USN-6766-1
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-aws5.15.0-1061.67USN-6766-3
Ubuntu:22.04:LTSlinux-aws5.15.0-1061.67UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-azure5.15.0-1063.72UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-azure5.15.0-1063.72USN-6766-1
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-azure-6.56.5.0-1022.23~22.04.1USN-6819-1
Ubuntu:22.04:LTSlinux-azure-6.56.5.0-1022.23~22.04.1UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1063.72.1USN-6766-1
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1063.72.1UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-gcp5.15.0-1059.67UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-gcp5.15.0-1059.67USN-6766-1
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-gcp-6.56.5.0-1022.24~22.04.1UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-gcp-6.56.5.0-1022.24~22.04.1USN-6818-1
Ubuntu:22.04:LTSlinux-gke5.15.0-1058.63UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-gke5.15.0-1058.63USN-6766-1
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1044.51UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1044.51USN-6766-1
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-hwe-6.56.5.0-41.41~22.04.2UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-hwe-6.56.5.0-41.41~22.04.2USN-6818-4
Ubuntu:22.04:LTSlinux-ibm5.15.0-1054.57USN-6766-1
Ubuntu:22.04:LTSlinux-ibm5.15.0-1054.57UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1057.63UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1057.63USN-6795-1
Ubuntu:22.04:LTSlinux-kvm5.15.0-1058.63USN-6766-1
Ubuntu:22.04:LTSlinux-kvm5.15.0-1058.63UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-106.116UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-106.116USN-6766-1
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.56.5.0-41.41.1~22.04.1UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.56.5.0-41.41.1~22.04.1USN-6818-1
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1054.55USN-6766-1
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1054.55UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-nvidia-6.56.5.0-1021.22USN-6818-3
Ubuntu:22.04:LTSlinux-nvidia-6.56.5.0-1021.22UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1026.26UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1015.15UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-oem-6.56.5.0-1024.25UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-oem-6.56.5.0-1024.25USN-6819-3
Ubuntu:22.04:LTSlinux-oracle5.15.0-1059.65USN-6766-1
Ubuntu:22.04:LTSlinux-oracle5.15.0-1059.65UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-oracle-6.56.5.0-1024.24~22.04.1USN-6819-4
Ubuntu:22.04:LTSlinux-oracle-6.56.5.0-1024.24~22.04.1UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-raspi5.15.0-1054.57USN-6766-2
Ubuntu:22.04:LTSlinux-raspi5.15.0-1054.57UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-riscv-6.56.5.0-40.40.1~22.04.1UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-starfive-6.56.5.0-1015.16~22.04.1USN-6819-1
Ubuntu:22.04:LTSlinux-starfive-6.56.5.0-1015.16~22.04.1UBUNTU-CVE-2023-52494
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1030.34UBUNTU-CVE-2023-52494

Affected products (as reported)

VendorProductVersions
Linux Linux a1d2bd164c1c78f87968b7883964175ec41c32ae – before 76ed0c6f6418cec6efe6f65a0b91f84be80b72ebec32332df7645e0ba463a08d483fe97665167071 – before 94991728c84f8df54fd9eec9b85855ef9057ea08ec32332df7645e0ba463a08d483fe97665167071 – before 2df39ac8f813860f79782807c3f7acff40b3c551ec32332df7645e0ba463a08d483fe97665167071 – before a9ebfc405fe1be145f414eafadcbf09506082010ec32332df7645e0ba463a08d483fe97665167071 – before ecf8320111822a1ae5d5fc512953eab46d543d0bec32332df7645e0ba463a08d483fe97665167071 – before eff9704f5332a13b08fbdbe0f84059c9e7051d5ffd5f40fc887485a8b9a6806a640a0d8e0ef1afb676879a980cd5ede4cb9a638999fb80d37bc09db5
Linux Linux 5.13

References