Vulnerability · Published Feb 20, 2024 · Assigned by Linux

CVE-2023-52439uio: Fix use-after-free in uio_open

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 23% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.3%top 77.3% 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: uio: Fix use-after-free in uio_open core-1 core-2 ------------------------------------------------------- uio_unregister_device uio_open idev = idr_find() device_unregister(&idev->dev) put_device(&idev->dev) uio_device_release get_device(&idev->dev) kfree(idev) uio_free_minor(minor) uio_release put_device(&idev->dev) kfree(idev) ------------------------------------------------------- In the core-1 uio_unregister_device(), the device_unregister will kfree idev when the idev->dev kobject ref is 1. But after core-1 device_unregister, put_device and before doing kfree, the core-2 may get_device. Then: 1. After core-1 kfree idev, the core-2 will do use-after-free for idev. 2. When core-2 do uio_release and put_device, the idev will be double freed. To address this issue, we can get idev atomic & inc idev reference with minor_lock.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8bpftool4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9bpftool7.3.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9kernel5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-64k5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-64k-core5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-64k-debug5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-64k-debug-core5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-64k-debug-devel5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-64k-debug-devel-matched5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-64k-debug-modules5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-64k-debug-modules-core5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-64k-debug-modules-extra5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-64k-devel5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-64k-devel-matched5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-64k-modules5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-64k-modules-core5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-64k-modules-extra5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-abi-stablelists4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9kernel-abi-stablelists5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-core4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9kernel-core5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-cross-headers4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9kernel-cross-headers5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-debug4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9kernel-debug5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-debug-core4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9kernel-debug-core5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-debug-devel4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9kernel-debug-devel5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-debug-devel-matched5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-debug-modules4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9kernel-debug-modules5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-debug-modules-core5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-debug-modules-extra4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9kernel-debug-modules-extra5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-debug-uki-virt5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-devel4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9kernel-devel5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-devel-matched5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-doc4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9kernel-doc5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-headers4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9kernel-headers5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-modules4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9kernel-modules5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-modules-core5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-modules-extra4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9kernel-modules-extra5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-rt4.18.0-553.5.1.rt7.346.el8_10ALSA-2024:3627
AlmaLinux:9kernel-rt5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-rt-core4.18.0-553.5.1.rt7.346.el8_10ALSA-2024:3627
AlmaLinux:9kernel-rt-core5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-rt-debug4.18.0-553.5.1.rt7.346.el8_10ALSA-2024:3627
AlmaLinux:9kernel-rt-debug5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-rt-debug-core4.18.0-553.5.1.rt7.346.el8_10ALSA-2024:3627
AlmaLinux:9kernel-rt-debug-core5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-rt-debug-devel4.18.0-553.5.1.rt7.346.el8_10ALSA-2024:3627
AlmaLinux:9kernel-rt-debug-devel5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-rt-debug-kvm4.18.0-553.5.1.rt7.346.el8_10ALSA-2024:3627
AlmaLinux:8kernel-rt-debug-modules4.18.0-553.5.1.rt7.346.el8_10ALSA-2024:3627
AlmaLinux:9kernel-rt-debug-modules5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-rt-debug-modules-core5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-rt-debug-modules-extra4.18.0-553.5.1.rt7.346.el8_10ALSA-2024:3627
AlmaLinux:9kernel-rt-debug-modules-extra5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-rt-devel4.18.0-553.5.1.rt7.346.el8_10ALSA-2024:3627
AlmaLinux:9kernel-rt-devel5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-rt-kvm4.18.0-553.5.1.rt7.346.el8_10ALSA-2024:3627
AlmaLinux:8kernel-rt-modules4.18.0-553.5.1.rt7.346.el8_10ALSA-2024:3627
AlmaLinux:9kernel-rt-modules5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-rt-modules-core5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-rt-modules-extra4.18.0-553.5.1.rt7.346.el8_10ALSA-2024:3627
AlmaLinux:9kernel-rt-modules-extra5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-tools4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9kernel-tools5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-tools-libs4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9kernel-tools-libs5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-tools-libs-devel4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9kernel-tools-libs-devel5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-uki-virt5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-zfcpdump4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9kernel-zfcpdump5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-zfcpdump-core4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9kernel-zfcpdump-core5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-zfcpdump-devel4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9kernel-zfcpdump-devel5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-zfcpdump-devel-matched5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-zfcpdump-modules4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9kernel-zfcpdump-modules5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9kernel-zfcpdump-modules-core5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8kernel-zfcpdump-modules-extra4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9kernel-zfcpdump-modules-extra5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9libperf5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8perf4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9perf5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:8python3-perf4.18.0-553.5.1.el8_10ALSA-2024:3618
AlmaLinux:9python3-perf5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9rtla5.14.0-427.37.1.el9_4ALSA-2024:6997
AlmaLinux:9rv5.14.0-427.37.1.el9_4ALSA-2024:6997
Debian:12linux6.1.76-1DEBIAN-CVE-2023-52439
Debian:13linux6.6.13-1DEBIAN-CVE-2023-52439
Debian:14linux6.6.13-1DEBIAN-CVE-2023-52439
Rocky Linux:8kernel0:4.18.0-553.5.1.el8_10RLSA-2024:3618
Rocky Linux:8kernel-rt0:4.18.0-553.5.1.rt7.346.el8_10RLSA-2024:3627
Ubuntu:22.04:LTSlinux5.15.0-102.112UBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux5.15.0-102.112USN-6725-1
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-aws5.15.0-1057.63UBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-aws5.15.0-1057.63USN-6725-2
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-aws-6.56.5.0-1017.17~22.04.2USN-6724-2
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-azure5.15.0-1060.69UBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-azure5.15.0-1060.69USN-6725-1
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-azure-6.56.5.0-1018.19~22.04.2USN-6724-1
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1060.69.1USN-6725-1
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1060.69.1UBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-gcp5.15.0-1055.63UBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-gcp5.15.0-1055.63USN-6725-1
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-gcp-6.56.5.0-1017.17~22.04.1USN-6724-1
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-gke5.15.0-1054.59USN-6725-1
Ubuntu:22.04:LTSlinux-gke5.15.0-1054.59UBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1040.46UBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1040.46USN-6725-1
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-hwe-6.56.5.0-27.28~22.04.1USN-6724-1
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-ibm5.15.0-1050.53USN-6725-1
Ubuntu:22.04:LTSlinux-ibm5.15.0-1050.53UBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1052.58USN-6725-1
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1052.58UBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-kvm5.15.0-1054.59UBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-kvm5.15.0-1054.59USN-6725-1
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-102.112UBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-102.112USN-6725-1
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.56.5.0-27.28.1~22.04.1USN-6724-1
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1048.48UBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1048.48USN-6725-1
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-nvidia-6.56.5.0-1014.14UBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1025.25UBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1012.12UBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-oem-6.16.1.0-1035.35USN-6688-1
Ubuntu:22.04:LTSlinux-oem-6.16.1.0-1035.35UBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-oem-6.56.5.0-1019.20USN-6724-1
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-oracle5.15.0-1055.61UBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-oracle5.15.0-1055.61USN-6725-1
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-oracle-6.56.5.0-1020.20~22.04.1USN-6724-1
Ubuntu:22.04:LTSlinux-raspi5.15.0-1050.53UBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-raspi5.15.0-1050.53USN-6725-1
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-starfive-6.56.5.0-1011.12~22.04.1USN-6724-1
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2023-52439
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1030.34UBUNTU-CVE-2023-52439

Affected products (as reported)

VendorProductVersions
Linux Linux 57c5f4df0a5a0ee83df799991251e2ee93a5e4e9 – before 3174e0f7de1ba392dc191625da83df02d695b60c57c5f4df0a5a0ee83df799991251e2ee93a5e4e9 – before e93da893d52d82d57fc0db2ca566024e0f26ff5057c5f4df0a5a0ee83df799991251e2ee93a5e4e9 – before 5e0be1229ae199ebb90b33102f74a0f22d15257057c5f4df0a5a0ee83df799991251e2ee93a5e4e9 – before 5cf604ee538ed0c467abe3b4cda5308a6398f0f757c5f4df0a5a0ee83df799991251e2ee93a5e4e9 – before 17a8519cb359c3b483fb5c7367efa9a8a508bdea57c5f4df0a5a0ee83df799991251e2ee93a5e4e9 – before 35f102607054faafe78d2a6994b18d5d9d6e92ad57c5f4df0a5a0ee83df799991251e2ee93a5e4e9 – before 913205930da6213305616ac539447702eaa85e4157c5f4df0a5a0ee83df799991251e2ee93a5e4e9 – before 0c9ae0b8605078eafc3bea053cc78791e97ba2e2
Linux Linux 4.18

References