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Vulnerability · Published Aug 15, 2026 · Assigned by Linux

CVE-2026-72329net/liquidio: drop cached VF pci_dev LUT

Critical 9.3

In plain English

A critical-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 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.3Critical
Exploit odds (30 days)0.2%top 90.9% 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/liquidio: drop cached VF pci_dev LUT The PF SR-IOV enable path caches VF pci_dev pointers in dpiring_to_vfpcidev_lut[] by iterating with pci_get_device(). Those entries do not own a reference, because the iterator drops the previous device reference on each step. The cached pointer is then dereferenced later when handling OCTEON_VF_FLR_REQUEST. Replace the cached VF mapping with runtime lookup on the mailbox DPI ring: derive the VF index from q_no, resolve the VF via exported PCI IOV helpers, validate it with the PF pointer and VF ID, then issue pcie_flr() and drop the reference with pci_dev_put(). Remove the unused VF lookup table initialization and cleanup.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8bpftool4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8kernel4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8kernel-abi-stablelists4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8kernel-core4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8kernel-cross-headers4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8kernel-debug4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8kernel-debug-core4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8kernel-debug-devel4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8kernel-debug-modules4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8kernel-debug-modules-extra4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8kernel-devel4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8kernel-doc4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8kernel-headers4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8kernel-modules4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8kernel-modules-extra4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8kernel-rt4.18.0-553.170.1.rt7.511.el8_10ALSA-2026:74132
AlmaLinux:8kernel-rt-core4.18.0-553.170.1.rt7.511.el8_10ALSA-2026:74132
AlmaLinux:8kernel-rt-debug4.18.0-553.170.1.rt7.511.el8_10ALSA-2026:74132
AlmaLinux:8kernel-rt-debug-core4.18.0-553.170.1.rt7.511.el8_10ALSA-2026:74132
AlmaLinux:8kernel-rt-debug-devel4.18.0-553.170.1.rt7.511.el8_10ALSA-2026:74132
AlmaLinux:8kernel-rt-debug-modules4.18.0-553.170.1.rt7.511.el8_10ALSA-2026:74132
AlmaLinux:8kernel-rt-debug-modules-extra4.18.0-553.170.1.rt7.511.el8_10ALSA-2026:74132
AlmaLinux:8kernel-rt-devel4.18.0-553.170.1.rt7.511.el8_10ALSA-2026:74132
AlmaLinux:8kernel-rt-modules4.18.0-553.170.1.rt7.511.el8_10ALSA-2026:74132
AlmaLinux:8kernel-rt-modules-extra4.18.0-553.170.1.rt7.511.el8_10ALSA-2026:74132
AlmaLinux:8kernel-tools4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8kernel-tools-libs4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8kernel-tools-libs-devel4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8kernel-zfcpdump4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8kernel-zfcpdump-core4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8kernel-zfcpdump-devel4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8kernel-zfcpdump-modules4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8kernel-zfcpdump-modules-extra4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8perf4.18.0-553.170.1.el8_10ALSA-2026:74133
AlmaLinux:8python3-perf4.18.0-553.170.1.el8_10ALSA-2026:74133
Debian:12linuxno fix listedDEBIAN-CVE-2026-72329
Debian:13linux6.12.115-2DEBIAN-CVE-2026-72329
Debian:14linux7.1.5-1DEBIAN-CVE-2026-72329
Rocky Linux:8kernel0:4.18.0-553.170.1.el8_10RLSA-2026:74133
Rocky Linux:8kernel-rt0:4.18.0-553.170.1.rt7.511.el8_10RLSA-2026:74132
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinuxno fix listedUBUNTU-CVE-2026-72329
Ubuntu:26.04:LTSlinux7.0.0-34.34UBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-awsno fix listedUBUNTU-CVE-2026-72329
Ubuntu:26.04:LTSlinux-aws7.0.0-1013.13UBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-aws-7.07.0.0-1013.13~24.04.1UBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-azureno fix listedUBUNTU-CVE-2026-72329
Ubuntu:26.04:LTSlinux-azure7.0.0-1017.17UBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-azure-7.07.0.0-1017.17~24.04.1UBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2026-72329
Ubuntu:26.04:LTSlinux-azure-fde7.0.0-1016.16UBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-azure-fde-7.07.0.0-1016.16~24.04.1UBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2026-72329
Ubuntu:26.04:LTSlinux-gcp7.0.0-1013.13UBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-gcp-7.07.0.0-1013.13~24.04.1UBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2026-72329
Ubuntu:26.04:LTSlinux-gke7.0.0-1007.8UBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-34.34~24.04.1UBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2026-72329
Ubuntu:26.04:LTSlinux-ibm7.0.0-1014.14UBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-72329
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-nvidia-7.07.0.0-1024.25~24.04.1UBUNTU-CVE-2026-72329
Ubuntu:26.04:LTSlinux-nvidia-bos7.0.0-2022.23UBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1035.38UBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-72329
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1014.14UBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2026-72329
Ubuntu:26.04:LTSlinux-oracle7.0.0-1012.12UBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-oracle-7.07.0.0-1012.12~24.04.1UBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-72329
Ubuntu:26.04:LTSlinux-raspi7.0.0-1020.20UBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-72329
Ubuntu:26.04:LTSlinux-realtime7.0.0-34.34.1UBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-72329
Ubuntu:26.04:LTSlinux-riscv7.0.0-34.34.1UBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-riscv-7.07.0.0-34.34.1~24.04.1UBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-vmwareno fix listedUBUNTU-CVE-2026-72329
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-72329
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2026-72329

Affected products (as reported)

VendorProductVersions
Linux Linux ca6139ffc67ee6ef0459f81e37894ed411083855 – before 4ec87796fadf5a631ee6513c258c0e3d9ca62f79ca6139ffc67ee6ef0459f81e37894ed411083855 – before e3b20de8d7c06c8f1a0ded1e52be9d282609c3daca6139ffc67ee6ef0459f81e37894ed411083855 – before 1cf5c6a80adc31456f3e93b2922a2446fd63e2c4ca6139ffc67ee6ef0459f81e37894ed411083855 – before 08ff33dce6f91510bb296a753a232db0ca3fd3d8ca6139ffc67ee6ef0459f81e37894ed411083855 – before 81acef3a247fd523513a2e9f71de1c167bc0f882ca6139ffc67ee6ef0459f81e37894ed411083855 – before 5c0e3ba4f500fd4314ceb42f07f16bc445156431
Linux Linux 4.10

References