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Vulnerability · Published Sep 18, 2024 · Assigned by Linux

CVE-2024-46744Squashfs: sanity check symbolic link size

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 NVD)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: Squashfs: sanity check symbolic link size Syzkiller reports a "KMSAN: uninit-value in pick_link" bug. This is caused by an uninitialised page, which is ultimately caused by a corrupted symbolic link size read from disk. The reason why the corrupted symlink size causes an uninitialised page is due to the following sequence of events: 1. squashfs_read_inode() is called to read the symbolic link from disk. This assigns the corrupted value 3875536935 to inode->i_size. 2. Later squashfs_symlink_read_folio() is called, which assigns this corrupted value to the length variable, which being a signed int, overflows producing a negative number. 3. The following loop that fills in the page contents checks that the copied bytes is less than length, which being negative means the loop is skipped, producing an uninitialised page. This patch adds a sanity check which checks that the symbolic link size is not larger than expected. -- V2: fix spelling mistake.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:9kernel5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-debug5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-debug-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-debug-devel5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-debug-devel-matched5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-debug-modules5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-debug-modules-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-debug-modules-extra5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-devel5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-devel-matched5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-modules5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-modules-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-modules-extra5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-abi-stablelists5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-cross-headers5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-debug5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-debug-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-debug-devel5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-debug-devel-matched5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-debug-modules5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-debug-modules-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-debug-modules-extra5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-debug-uki-virt5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-devel5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-devel-matched5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-doc5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-headers5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-modules5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-modules-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-modules-extra5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k-debug5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k-debug-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k-debug-devel5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k-debug-modules5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k-debug-modules-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k-debug-modules-extra5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k-devel5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k-modules5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k-modules-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k-modules-extra5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-debug5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-debug-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-debug-devel5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-debug-modules5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-debug-modules-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-debug-modules-extra5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-devel5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-modules5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-modules-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-modules-extra5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-tools5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-tools-libs5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-tools-libs-devel5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-uki-virt5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-uki-virt-addons5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-zfcpdump5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-zfcpdump-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-zfcpdump-devel5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-zfcpdump-devel-matched5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-zfcpdump-modules5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-zfcpdump-modules-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-zfcpdump-modules-extra5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9libperf5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9perf5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9python3-perf5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9rtla5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9rv5.14.0-611.5.1.el9_7ALSA-2025:20518
Debian:12linux6.1.112-1DEBIAN-CVE-2024-46744
Debian:13linux6.10.11-1DEBIAN-CVE-2024-46744
Debian:14linux6.10.11-1DEBIAN-CVE-2024-46744
Rocky Linux:9kernel0:5.14.0-611.5.1.el9_7RLSA-2025:20518
Ubuntu:22.04:LTSlinux5.15.0-125.135UBUNTU-CVE-2024-46744
Ubuntu:24.04:LTSlinux6.8.0-50.51UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-aws5.15.0-1072.78UBUNTU-CVE-2024-46744
Ubuntu:24.04:LTSlinux-aws6.8.0-1020.22UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1020.22~22.04.1UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-azure5.15.0-1075.84UBUNTU-CVE-2024-46744
Ubuntu:24.04:LTSlinux-azure6.8.0-1020.23UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1020.23~22.04.1UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1076.85.1UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-gcp5.15.0-1071.79UBUNTU-CVE-2024-46744
Ubuntu:24.04:LTSlinux-gcp6.8.0-1019.21UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1019.21~22.04.1UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-gke5.15.0-1069.75UBUNTU-CVE-2024-46744
Ubuntu:24.04:LTSlinux-gke6.8.0-1015.19UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1055.62UBUNTU-CVE-2024-46744
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1002.4UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-50.51~22.04.1UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-ibm5.15.0-1065.68UBUNTU-CVE-2024-46744
Ubuntu:24.04:LTSlinux-ibm6.8.0-1017.17UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1017.17~22.04.1UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1067.73UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-kvm5.15.0-1069.74UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-125.135UBUNTU-CVE-2024-46744
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-50.51.1UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-50.51.1~22.04.1UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1067.68UBUNTU-CVE-2024-46744
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1019.21UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1019.21~22.04.1UBUNTU-CVE-2024-46744
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1019.21.1UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1032.32UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1020.20UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2024-46744
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1018.18UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-oracle5.15.0-1070.76UBUNTU-CVE-2024-46744
Ubuntu:24.04:LTSlinux-oracle6.8.0-1017.18UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1017.18~22.04.1UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-raspi5.15.0-1065.68UBUNTU-CVE-2024-46744
Ubuntu:24.04:LTSlinux-raspi6.8.0-1016.18UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-46744
Ubuntu:24.04:LTSlinux-riscv6.8.0-50.51.1UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-50.51.1~22.04.1UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2024-46744
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1017.18UBUNTU-CVE-2024-46744
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1038.42UBUNTU-CVE-2024-46744

Affected products (as reported)

VendorProductVersions
Linux Linux 6545b246a2c815a8fcd07d58240effb6ec3481b1 – before f82cb7f24032ed023fc67d26ea9bf322d8431a906545b246a2c815a8fcd07d58240effb6ec3481b1 – before 1b9451ba6f21478a75288ea3e3fca4be35e2a4386545b246a2c815a8fcd07d58240effb6ec3481b1 – before 5c8906de98d0d7ad42ff3edf2cb6cd7e0ea658c46545b246a2c815a8fcd07d58240effb6ec3481b1 – before 087f25b2d36adae19951114ffcbb7106ed405ebb6545b246a2c815a8fcd07d58240effb6ec3481b1 – before fac5e82ab1334fc8ed6ff7183702df634bd1d93d6545b246a2c815a8fcd07d58240effb6ec3481b1 – before c3af7e460a526007e4bed1ce3623274a1a6afe5e6545b246a2c815a8fcd07d58240effb6ec3481b1 – before ef4e249971eb77ec33d74c5c3de1e2576faf6c906545b246a2c815a8fcd07d58240effb6ec3481b1 – before 810ee43d9cd245d138a2733d87a24858a23f577d
Linux Linux 2.6.29

References