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9.3
CRITICAL CVSS 3.1
CVE-2026-72329
net/liquidio: drop cached VF pci_dev LUT
Overview
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.

Details
INFO

Published Date :

Aug. 15, 2026, 6:22 a.m.

Last Modified :

Aug. 17, 2026, 6:18 a.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Impact
Affected Products

The following products are affected by CVE-2026-72329 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 CRITICAL 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
Update the Linux kernel to fix a memory corruption issue related to VF PCI device handling.
  • Update the Linux kernel to the latest stable version.
  • Apply the specific patch addressing the liquidio driver.
  • Recompile and install the kernel.
  • Reboot the system to apply changes.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-72329.

URL Resource
https://git.kernel.org/stable/c/5c0e3ba4f500fd4314ceb42f07f16bc445156431
https://git.kernel.org/stable/c/81acef3a247fd523513a2e9f71de1c167bc0f882
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-72329 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-72329 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-72329 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-72329 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 17, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
    Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'ca6139ffc67ee6ef0459f81e37894ed411083855', 'lessThan': '81acef3a247fd523513a2e9f71de1c167bc0f882', 'versionType': 'git'}, {'status': 'affected', 'version': 'ca6139ffc67ee6ef0459f81e37894ed411083855', 'lessThan': '5c0e3ba4f500fd4314ceb42f07f16bc445156431', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/cavium/liquidio/lio_main.c', 'drivers/net/ethernet/cavium/liquidio/octeon_device.h', 'drivers/net/ethernet/cavium/liquidio/octeon_mailbox.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc3', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/cavium/liquidio/lio_main.c', 'drivers/net/ethernet/cavium/liquidio/octeon_device.h', 'drivers/net/ethernet/cavium/liquidio/octeon_mailbox.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'ca6139ffc67ee6ef0459f81e37894ed411083855', 'lessThan': '81acef3a247fd523513a2e9f71de1c167bc0f882', 'versionType': 'git'}, {'status': 'affected', 'version': 'ca6139ffc67ee6ef0459f81e37894ed411083855', 'lessThan': '5c0e3ba4f500fd4314ceb42f07f16bc445156431', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/cavium/liquidio/lio_main.c', 'drivers/net/ethernet/cavium/liquidio/octeon_device.h', 'drivers/net/ethernet/cavium/liquidio/octeon_mailbox.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/cavium/liquidio/lio_main.c', 'drivers/net/ethernet/cavium/liquidio/octeon_device.h', 'drivers/net/ethernet/cavium/liquidio/octeon_mailbox.c'], 'defaultStatus': 'affected'}]
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 15, 2026

    Action Type Old Value New Value
    Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'ca6139ffc67ee6ef0459f81e37894ed411083855', 'lessThan': '81acef3a247fd523513a2e9f71de1c167bc0f882', 'versionType': 'git'}, {'status': 'affected', 'version': 'ca6139ffc67ee6ef0459f81e37894ed411083855', 'lessThan': '5c0e3ba4f500fd4314ceb42f07f16bc445156431', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/cavium/liquidio/lio_main.c', 'drivers/net/ethernet/cavium/liquidio/octeon_device.h', 'drivers/net/ethernet/cavium/liquidio/octeon_mailbox.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc3', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/cavium/liquidio/lio_main.c', 'drivers/net/ethernet/cavium/liquidio/octeon_device.h', 'drivers/net/ethernet/cavium/liquidio/octeon_mailbox.c'], 'defaultStatus': 'affected'}]
    Added 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.
    Added Reference https://git.kernel.org/stable/c/5c0e3ba4f500fd4314ceb42f07f16bc445156431
    Added Reference https://git.kernel.org/stable/c/81acef3a247fd523513a2e9f71de1c167bc0f882
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 9.3
Attack Vector
Attack Complexity
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