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

CVE-2026-72329 is fixed in 38 products on 1 platform, first by DEBIAN-CVE-2026-72329, released August 15, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-72329
- Priority: High
- CVSS: 9.3 (Important)
- EPSS: 0.0019
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 15, 2026
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-72329

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bpftool RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | bpftool almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | bpftool ol 8 | 0:4.18.0-553.170.1.el8_10 | [ELSA-2026-74133](https://patchblox.com/security/data/fix/linux/elsa-2026-74133.md) | Oct 2, 2026 |
| Linux | kernel RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | kernel almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | kernel ol 8 | 0:4.18.0-553.170.1.el8_10 | [ELSA-2026-74133](https://patchblox.com/security/data/fix/linux/elsa-2026-74133.md) | Oct 2, 2026 |
| Linux | kernel rocky 8 | 0:4.18.0-553.170.1.el8_10 | [RLSA-2026:74133](https://patchblox.com/security/data/fix/linux/rlsa-2026-74133.md) | Oct 1, 2026 |
| Linux | kernel-abi-stablelists RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | kernel-abi-stablelists almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | kernel-abi-stablelists ol 8 | 0:4.18.0-553.170.1.el8_10 | [ELSA-2026-74133](https://patchblox.com/security/data/fix/linux/elsa-2026-74133.md) | Oct 2, 2026 |
| Linux | kernel-core RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | kernel-core almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | kernel-core ol 8 | 0:4.18.0-553.170.1.el8_10 | [ELSA-2026-74133](https://patchblox.com/security/data/fix/linux/elsa-2026-74133.md) | Oct 2, 2026 |
| Linux | kernel-cross-headers almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | kernel-cross-headers ol 8 | 0:4.18.0-553.170.1.el8_10 | [ELSA-2026-74133](https://patchblox.com/security/data/fix/linux/elsa-2026-74133.md) | Oct 2, 2026 |
| Linux | kernel-debug RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | kernel-debug almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | kernel-debug ol 8 | 0:4.18.0-553.170.1.el8_10 | [ELSA-2026-74133](https://patchblox.com/security/data/fix/linux/elsa-2026-74133.md) | Oct 2, 2026 |
| Linux | kernel-debug-core RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | kernel-debug-core almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | kernel-debug-core ol 8 | 0:4.18.0-553.170.1.el8_10 | [ELSA-2026-74133](https://patchblox.com/security/data/fix/linux/elsa-2026-74133.md) | Oct 2, 2026 |
| Linux | kernel-debug-devel RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | kernel-debug-devel almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | kernel-debug-devel ol 8 | 0:4.18.0-553.170.1.el8_10 | [ELSA-2026-74133](https://patchblox.com/security/data/fix/linux/elsa-2026-74133.md) | Oct 2, 2026 |
| Linux | kernel-debug-modules RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | kernel-debug-modules almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | kernel-debug-modules ol 8 | 0:4.18.0-553.170.1.el8_10 | [ELSA-2026-74133](https://patchblox.com/security/data/fix/linux/elsa-2026-74133.md) | Oct 2, 2026 |
| Linux | kernel-debug-modules-extra RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | kernel-debug-modules-extra almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | kernel-debug-modules-extra ol 8 | 0:4.18.0-553.170.1.el8_10 | [ELSA-2026-74133](https://patchblox.com/security/data/fix/linux/elsa-2026-74133.md) | Oct 2, 2026 |
| Linux | kernel-devel RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | kernel-devel almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | kernel-devel ol 8 | 0:4.18.0-553.170.1.el8_10 | [ELSA-2026-74133](https://patchblox.com/security/data/fix/linux/elsa-2026-74133.md) | Oct 2, 2026 |
| Linux | kernel-doc RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | kernel-doc almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | kernel-doc ol 8 | 0:4.18.0-553.170.1.el8_10 | [ELSA-2026-74133](https://patchblox.com/security/data/fix/linux/elsa-2026-74133.md) | Oct 2, 2026 |
| Linux | kernel-headers almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | kernel-headers ol 8 | 0:4.18.0-553.170.1.el8_10 | [ELSA-2026-74133](https://patchblox.com/security/data/fix/linux/elsa-2026-74133.md) | Oct 2, 2026 |
| Linux | kernel-modules RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | kernel-modules almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | kernel-modules ol 8 | 0:4.18.0-553.170.1.el8_10 | [ELSA-2026-74133](https://patchblox.com/security/data/fix/linux/elsa-2026-74133.md) | Oct 2, 2026 |
| Linux | kernel-modules-extra RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | kernel-modules-extra almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | kernel-modules-extra ol 8 | 0:4.18.0-553.170.1.el8_10 | [ELSA-2026-74133](https://patchblox.com/security/data/fix/linux/elsa-2026-74133.md) | Oct 2, 2026 |
| Linux | kernel-rt RHEL 8 | 0:4.18.0-553.170.1.rt7.511.el8_10 | [RHSA-2026:74132](https://patchblox.com/security/data/fix/linux/rhsa-2026-74132.md) | Oct 1, 2026 |
| Linux | kernel-rt almalinux 8 | 4.18.0-553.170.1.rt7.511.el8_10 | [ALSA-2026:74132](https://patchblox.com/security/data/fix/linux/alsa-2026-74132.md) | Sep 30, 2026 |
| Linux | kernel-rt rocky 8 | 0:4.18.0-553.170.1.rt7.511.el8_10 | [RLSA-2026:74132](https://patchblox.com/security/data/fix/linux/rlsa-2026-74132.md) | Oct 1, 2026 |
| Linux | kernel-rt-core RHEL 8 | 0:4.18.0-553.170.1.rt7.511.el8_10 | [RHSA-2026:74132](https://patchblox.com/security/data/fix/linux/rhsa-2026-74132.md) | Oct 1, 2026 |
| Linux | kernel-rt-core almalinux 8 | 4.18.0-553.170.1.rt7.511.el8_10 | [ALSA-2026:74132](https://patchblox.com/security/data/fix/linux/alsa-2026-74132.md) | Sep 30, 2026 |
| Linux | kernel-rt-debug RHEL 8 | 0:4.18.0-553.170.1.rt7.511.el8_10 | [RHSA-2026:74132](https://patchblox.com/security/data/fix/linux/rhsa-2026-74132.md) | Oct 1, 2026 |
| Linux | kernel-rt-debug almalinux 8 | 4.18.0-553.170.1.rt7.511.el8_10 | [ALSA-2026:74132](https://patchblox.com/security/data/fix/linux/alsa-2026-74132.md) | Sep 30, 2026 |
| Linux | kernel-rt-debug-core RHEL 8 | 0:4.18.0-553.170.1.rt7.511.el8_10 | [RHSA-2026:74132](https://patchblox.com/security/data/fix/linux/rhsa-2026-74132.md) | Oct 1, 2026 |
| Linux | kernel-rt-debug-core almalinux 8 | 4.18.0-553.170.1.rt7.511.el8_10 | [ALSA-2026:74132](https://patchblox.com/security/data/fix/linux/alsa-2026-74132.md) | Sep 30, 2026 |
| Linux | kernel-rt-debug-devel RHEL 8 | 0:4.18.0-553.170.1.rt7.511.el8_10 | [RHSA-2026:74132](https://patchblox.com/security/data/fix/linux/rhsa-2026-74132.md) | Oct 1, 2026 |
| Linux | kernel-rt-debug-devel almalinux 8 | 4.18.0-553.170.1.rt7.511.el8_10 | [ALSA-2026:74132](https://patchblox.com/security/data/fix/linux/alsa-2026-74132.md) | Sep 30, 2026 |
| Linux | kernel-rt-debug-kvm RHEL 8 | 0:4.18.0-553.170.1.rt7.511.el8_10 | [RHSA-2026:74132](https://patchblox.com/security/data/fix/linux/rhsa-2026-74132.md) | Oct 1, 2026 |
| Linux | kernel-rt-debug-modules RHEL 8 | 0:4.18.0-553.170.1.rt7.511.el8_10 | [RHSA-2026:74132](https://patchblox.com/security/data/fix/linux/rhsa-2026-74132.md) | Oct 1, 2026 |
| Linux | kernel-rt-debug-modules almalinux 8 | 4.18.0-553.170.1.rt7.511.el8_10 | [ALSA-2026:74132](https://patchblox.com/security/data/fix/linux/alsa-2026-74132.md) | Sep 30, 2026 |
| Linux | kernel-rt-debug-modules-extra RHEL 8 | 0:4.18.0-553.170.1.rt7.511.el8_10 | [RHSA-2026:74132](https://patchblox.com/security/data/fix/linux/rhsa-2026-74132.md) | Oct 1, 2026 |
| Linux | kernel-rt-debug-modules-extra almalinux 8 | 4.18.0-553.170.1.rt7.511.el8_10 | [ALSA-2026:74132](https://patchblox.com/security/data/fix/linux/alsa-2026-74132.md) | Sep 30, 2026 |
| Linux | kernel-rt-devel RHEL 8 | 0:4.18.0-553.170.1.rt7.511.el8_10 | [RHSA-2026:74132](https://patchblox.com/security/data/fix/linux/rhsa-2026-74132.md) | Oct 1, 2026 |
| Linux | kernel-rt-devel almalinux 8 | 4.18.0-553.170.1.rt7.511.el8_10 | [ALSA-2026:74132](https://patchblox.com/security/data/fix/linux/alsa-2026-74132.md) | Sep 30, 2026 |
| Linux | kernel-rt-kvm RHEL 8 | 0:4.18.0-553.170.1.rt7.511.el8_10 | [RHSA-2026:74132](https://patchblox.com/security/data/fix/linux/rhsa-2026-74132.md) | Oct 1, 2026 |
| Linux | kernel-rt-modules RHEL 8 | 0:4.18.0-553.170.1.rt7.511.el8_10 | [RHSA-2026:74132](https://patchblox.com/security/data/fix/linux/rhsa-2026-74132.md) | Oct 1, 2026 |
| Linux | kernel-rt-modules almalinux 8 | 4.18.0-553.170.1.rt7.511.el8_10 | [ALSA-2026:74132](https://patchblox.com/security/data/fix/linux/alsa-2026-74132.md) | Sep 30, 2026 |
| Linux | kernel-rt-modules-extra RHEL 8 | 0:4.18.0-553.170.1.rt7.511.el8_10 | [RHSA-2026:74132](https://patchblox.com/security/data/fix/linux/rhsa-2026-74132.md) | Oct 1, 2026 |
| Linux | kernel-rt-modules-extra almalinux 8 | 4.18.0-553.170.1.rt7.511.el8_10 | [ALSA-2026:74132](https://patchblox.com/security/data/fix/linux/alsa-2026-74132.md) | Sep 30, 2026 |
| Linux | kernel-tools RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | kernel-tools almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | kernel-tools ol 8 | 0:4.18.0-553.170.1.el8_10 | [ELSA-2026-74133](https://patchblox.com/security/data/fix/linux/elsa-2026-74133.md) | Oct 2, 2026 |
| Linux | kernel-tools-libs RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | kernel-tools-libs almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | kernel-tools-libs ol 8 | 0:4.18.0-553.170.1.el8_10 | [ELSA-2026-74133](https://patchblox.com/security/data/fix/linux/elsa-2026-74133.md) | Oct 2, 2026 |
| Linux | kernel-tools-libs-devel RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | kernel-tools-libs-devel almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | kernel-tools-libs-devel ol 8 | 0:4.18.0-553.170.1.el8_10 | [ELSA-2026-74133](https://patchblox.com/security/data/fix/linux/elsa-2026-74133.md) | Oct 2, 2026 |
| Linux | kernel-zfcpdump RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | kernel-zfcpdump almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | kernel-zfcpdump-core RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | kernel-zfcpdump-core almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | kernel-zfcpdump-devel RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | kernel-zfcpdump-devel almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | kernel-zfcpdump-modules RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | kernel-zfcpdump-modules almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | kernel-zfcpdump-modules-extra RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | kernel-zfcpdump-modules-extra almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | linux Debian 13.5 (trixie) | 6.12.115-2 | [DEBIAN-CVE-2026-72329](https://patchblox.com/security/data/fix/linux/debian-cve-2026-72329.md) | Aug 15, 2026 |
| Linux | linux Debian 14 | 7.1.5-1 | [DEBIAN-CVE-2026-72329](https://patchblox.com/security/data/fix/linux/debian-cve-2026-72329.md) | Aug 15, 2026 |
| Linux | perf RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | perf almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | perf ol 8 | 0:4.18.0-553.170.1.el8_10 | [ELSA-2026-74133](https://patchblox.com/security/data/fix/linux/elsa-2026-74133.md) | Oct 2, 2026 |
| Linux | python3-perf RHEL 8 | 0:4.18.0-553.170.1.el8_10 | [RHSA-2026:74133](https://patchblox.com/security/data/fix/linux/rhsa-2026-74133.md) | Oct 1, 2026 |
| Linux | python3-perf almalinux 8 | 4.18.0-553.170.1.el8_10 | [ALSA-2026:74133](https://patchblox.com/security/data/fix/linux/alsa-2026-74133.md) | Sep 30, 2026 |
| Linux | python3-perf ol 8 | 0:4.18.0-553.170.1.el8_10 | [ELSA-2026-74133](https://patchblox.com/security/data/fix/linux/elsa-2026-74133.md) | Oct 2, 2026 |

---

Data as of 2026-11-09T13:31:49Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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