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Vulnerability · Published May 21, 2024 · Assigned by Linux

CVE-2023-52840Input: synaptics-rmi4 - fix use after free in rmi_unregister_function()

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 0.2% (higher than 15% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.2%top 84.5% 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: Input: synaptics-rmi4 - fix use after free in rmi_unregister_function() The put_device() calls rmi_release_function() which frees "fn" so the dereference on the next line "fn->num_of_irqs" is a use after free. Move the put_device() to the end to fix this.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8bpftool4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-abi-stablelists4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-core4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-cross-headers4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-debug4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-debug-core4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-debug-devel4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-debug-modules4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-debug-modules-extra4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-devel4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-doc4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-headers4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-modules4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-modules-extra4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-rt4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-rt-core4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-rt-debug4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-rt-debug-core4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-rt-debug-devel4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-rt-debug-kvm4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-rt-debug-modules4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-rt-debug-modules-extra4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-rt-devel4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-rt-kvm4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-rt-modules4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-rt-modules-extra4.18.0-553.22.1.rt7.363.el8_10ALSA-2024:7001
AlmaLinux:8kernel-tools4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-tools-libs4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-tools-libs-devel4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-zfcpdump4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-zfcpdump-core4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-zfcpdump-devel4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-zfcpdump-modules4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8kernel-zfcpdump-modules-extra4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8perf4.18.0-553.22.1.el8_10ALSA-2024:7000
AlmaLinux:8python3-perf4.18.0-553.22.1.el8_10ALSA-2024:7000
Debian:12linux6.1.64-1DEBIAN-CVE-2023-52840
Debian:13linux6.6.8-1DEBIAN-CVE-2023-52840
Debian:14linux6.6.8-1DEBIAN-CVE-2023-52840
Rocky Linux:8kernel0:4.18.0-553.22.1.el8_10RLSA-2024:7000
Rocky Linux:8kernel-rt0:4.18.0-553.22.1.rt7.363.el8_10RLSA-2024:7001
Ubuntu:22.04:LTSlinux5.15.0-100.110UBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-aws5.15.0-1056.61UBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-azure5.15.0-1058.66UBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1058.66.1UBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-gcp5.15.0-1053.61UBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-gke5.15.0-1052.57UBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1038.44UBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-ibm5.15.0-1048.51UBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1050.56UBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-kvm5.15.0-1052.57UBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-100.110UBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1046.46UBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-nvidia-6.56.5.0-1014.14UBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1025.25UBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1012.12UBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-oracle5.15.0-1053.59UBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-raspi5.15.0-1048.51UBUNTU-CVE-2023-52840
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2023-52840
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1030.34UBUNTU-CVE-2023-52840

Affected products (as reported)

VendorProductVersions
Linux Linux 24d28e4f1271cb2f91613dada8f2acccd00eff56 – before 2f236d8638f5b43e0c72919a6a27fe286c32053f24d28e4f1271cb2f91613dada8f2acccd00eff56 – before 50d12253666195a14c6cd2b81c376e2dbeedbdff24d28e4f1271cb2f91613dada8f2acccd00eff56 – before 6c71e065befb2fae8f1461559b940c04e1071bd524d28e4f1271cb2f91613dada8f2acccd00eff56 – before 303766bb92c5c225cf40f9bbbe7e29749406e2f224d28e4f1271cb2f91613dada8f2acccd00eff56 – before 7082b1fb5321037bc11ba1cf2d7ed23c6b2b521f24d28e4f1271cb2f91613dada8f2acccd00eff56 – before cc56c4d17721dcb10ad4e9c9266e449be146268324d28e4f1271cb2f91613dada8f2acccd00eff56 – before c8e639f5743cf4b01f8c65e0df075fe4d782b58524d28e4f1271cb2f91613dada8f2acccd00eff56 – before eb988e46da2e4eae89f5337e047ce372fe33d5b1
Linux Linux 4.18

References