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Vulnerability · Published Aug 19, 2025 · Assigned by Linux

CVE-2025-38568net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing

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 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 92.9% 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: net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing TCA_MQPRIO_TC_ENTRY_INDEX is validated using NLA_POLICY_MAX(NLA_U32, TC_QOPT_MAX_QUEUE), which allows the value TC_QOPT_MAX_QUEUE (16). This leads to a 4-byte out-of-bounds stack write in the fp[] array, which only has room for 16 elements (0–15). Fix this by changing the policy to allow only up to TC_QOPT_MAX_QUEUE - 1.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:9kernel5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-64k5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-64k-core5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-64k-debug5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-64k-debug-core5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-64k-debug-devel5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-64k-debug-devel-matched5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-64k-debug-modules5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-64k-debug-modules-core5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-64k-debug-modules-extra5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-64k-devel5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-64k-devel-matched5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-64k-modules5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-64k-modules-core5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-64k-modules-extra5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:10kernel-abi-stablelists6.12.0-124.31.1.el10_1ALSA-2026:1690
AlmaLinux:9kernel-abi-stablelists5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-core5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-cross-headers5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-debug5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-debug-core5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-debug-devel5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-debug-devel-matched5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-debug-modules5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-debug-modules-core5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-debug-modules-extra5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-debug-uki-virt5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-devel5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-devel-matched5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:10kernel-doc6.12.0-124.31.1.el10_1ALSA-2026:1690
AlmaLinux:9kernel-doc5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-headers5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-modules5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-modules-core5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-modules-extra5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-64k5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-64k-core5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-64k-debug5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-64k-debug-core5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-64k-debug-devel5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-64k-debug-modules5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-64k-debug-modules-core5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-64k-debug-modules-extra5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-64k-devel5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-64k-modules5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-64k-modules-core5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-64k-modules-extra5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-core5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-debug5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-debug-core5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-debug-devel5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-debug-modules5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-debug-modules-core5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-debug-modules-extra5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-devel5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-modules5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-modules-core5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-rt-modules-extra5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-tools5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-tools-libs5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-tools-libs-devel5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-uki-virt5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-uki-virt-addons5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-zfcpdump5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-zfcpdump-core5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-zfcpdump-devel5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-zfcpdump-devel-matched5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-zfcpdump-modules5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-zfcpdump-modules-core5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9kernel-zfcpdump-modules-extra5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9libperf5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9perf5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9python3-perf5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9rtla5.14.0-611.27.1.el9_7ALSA-2026:1617
AlmaLinux:9rv5.14.0-611.27.1.el9_7ALSA-2026:1617
Debian:13linux6.12.43-1DEBIAN-CVE-2025-38568
Debian:14linux6.16.3-1DEBIAN-CVE-2025-38568
Rocky Linux:10kernel0:6.12.0-124.31.1.el10_1RLSA-2026:1690
Rocky Linux:9kernel0:5.14.0-611.27.1.el9_7RLSA-2026:1617
Ubuntu:24.04:LTSlinux6.8.0-100.100UBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-aws6.8.0-1046.49UBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-aws-6.146.14.0-1017.17~24.04.1UBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1046.49~22.04.1UBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-azure6.8.0-1046.52UBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-azure-6.146.14.0-1017.17~24.04.1UBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1051.57~22.04.1UBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1046.53UBUNTU-CVE-2025-38568
Ubuntu:25.10linux-azure-fdeno fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-azure-fde-6.86.8.0-1046.53~22.04.1UBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-gcp6.8.0-1047.50UBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-gcp-6.146.14.0-1020.21~24.04.1UBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1047.50~22.04.2UBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-gke6.8.0-1043.48UBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1030.33UBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-100.100~22.04.1UBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-ibm6.8.0-1044.44UBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1044.44~22.04.1UBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-intelno fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-100.100.1UBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-100.100.1~22.04.1UBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1046.49UBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1046.49~22.04.1UBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1046.49.1UBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1020.20UBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-oem-6.146.14.0-1016.16UBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-oracle6.8.0-1043.44UBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-oracle-6.146.14.0-1017.17~24.04.1UBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1043.44~22.04.1UBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-raspi6.8.0-1047.51UBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-riscv-6.146.14.0-36.36.1~24.04.1UBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-100.100~22.04.1UBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2025-38568
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2025-38568
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1023.24UBUNTU-CVE-2025-38568

Affected products (as reported)

VendorProductVersions
Linux Linux f62af20bed2d9e824f51cfc97ff01bc261f40e58 – before 39491e859fd494d0b51adc5c7d54c8a7dcf1d198f62af20bed2d9e824f51cfc97ff01bc261f40e58 – before d00e4125680f7074c4f42ce3c297336f23128e70f62af20bed2d9e824f51cfc97ff01bc261f40e58 – before 66fc2ebdd9d5dd6e5a9c7edeace5a61a0ab2cd86f62af20bed2d9e824f51cfc97ff01bc261f40e58 – before f1a9dbcb7d17bf0abb325cdc984957cfabc59693f62af20bed2d9e824f51cfc97ff01bc261f40e58 – before ffd2dc4c6c49ff4f1e5d34e454a6a55608104c17
Linux Linux 6.4

References