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7.9
HIGH CVSS 3.1
CVE-2026-72312
octeontx2-af: fix VF bringup affecting PF promiscuous state
Overview
Description

In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: fix VF bringup affecting PF promiscuous state Mbox handling of nix_set_rx_mode for a VF with promiscuous and all_multi flags set to false causes deletion of the PF's promiscuous and allmulti MCAM rules. This occurs because the APIs that enable/disable these rules operate only on the PF, even when the mbox request is made via a VF interface. Guard both rvu_npc_enable_allmulti_entry() and rvu_npc_enable_promisc_entry() disable paths with an is_vf() check so that a VF bringing up or tearing down its interface cannot inadvertently clear the PF's MCAM rules.

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-2026-72312 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 HIGH 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
Update the Linux kernel to prevent VF operations from affecting PF promiscuous state.
  • Update the Linux kernel.
  • Ensure VF bringup/teardown does not affect PF rules.
  • Apply vendor-provided kernel patches.
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-2026-72312.

URL Resource
https://git.kernel.org/stable/c/212c59e5e416859579272288fd325148fc316109
https://git.kernel.org/stable/c/3cf83432e0561aef6d7ec2664909d12d0ff0ffc1
https://git.kernel.org/stable/c/3de77d2f34c2bc2acaedabc2c5e0a561b85c283a
https://git.kernel.org/stable/c/53e17d9ed779ad25870abb9c31bc294c71a2278c
https://git.kernel.org/stable/c/daa2451640a3e0727fd598f5c2ccb8bb4d5a8b9c
https://git.kernel.org/stable/c/fabb881df322da25442f98d23f5fa371e3c78ec4
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-72312 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-2026-72312 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-2026-72312 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-2026-72312 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:L/UI:N/S:C/C:L/I:L/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': '967db3529ecac305d230aa4e60abddf6ab63543a', 'lessThan': 'daa2451640a3e0727fd598f5c2ccb8bb4d5a8b9c', 'versionType': 'git'}, {'status': 'affected', 'version': '967db3529ecac305d230aa4e60abddf6ab63543a', 'lessThan': '212c59e5e416859579272288fd325148fc316109', 'versionType': 'git'}, {'status': 'affected', 'version': '967db3529ecac305d230aa4e60abddf6ab63543a', 'lessThan': '53e17d9ed779ad25870abb9c31bc294c71a2278c', 'versionType': 'git'}, {'status': 'affected', 'version': '967db3529ecac305d230aa4e60abddf6ab63543a', 'lessThan': '3de77d2f34c2bc2acaedabc2c5e0a561b85c283a', 'versionType': 'git'}, {'status': 'affected', 'version': '967db3529ecac305d230aa4e60abddf6ab63543a', 'lessThan': '3cf83432e0561aef6d7ec2664909d12d0ff0ffc1', 'versionType': 'git'}, {'status': 'affected', 'version': '967db3529ecac305d230aa4e60abddf6ab63543a', 'lessThan': 'fabb881df322da25442f98d23f5fa371e3c78ec4', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.14', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'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/marvell/octeontx2/af/rvu_nix.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '967db3529ecac305d230aa4e60abddf6ab63543a', 'lessThan': 'daa2451640a3e0727fd598f5c2ccb8bb4d5a8b9c', 'versionType': 'git'}, {'status': 'affected', 'version': '967db3529ecac305d230aa4e60abddf6ab63543a', 'lessThan': '212c59e5e416859579272288fd325148fc316109', 'versionType': 'git'}, {'status': 'affected', 'version': '967db3529ecac305d230aa4e60abddf6ab63543a', 'lessThan': '53e17d9ed779ad25870abb9c31bc294c71a2278c', 'versionType': 'git'}, {'status': 'affected', 'version': '967db3529ecac305d230aa4e60abddf6ab63543a', 'lessThan': '3de77d2f34c2bc2acaedabc2c5e0a561b85c283a', 'versionType': 'git'}, {'status': 'affected', 'version': '967db3529ecac305d230aa4e60abddf6ab63543a', 'lessThan': '3cf83432e0561aef6d7ec2664909d12d0ff0ffc1', 'versionType': 'git'}, {'status': 'affected', 'version': '967db3529ecac305d230aa4e60abddf6ab63543a', 'lessThan': 'fabb881df322da25442f98d23f5fa371e3c78ec4', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.14', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'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/marvell/octeontx2/af/rvu_nix.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': '967db3529ecac305d230aa4e60abddf6ab63543a', 'lessThan': 'daa2451640a3e0727fd598f5c2ccb8bb4d5a8b9c', 'versionType': 'git'}, {'status': 'affected', 'version': '967db3529ecac305d230aa4e60abddf6ab63543a', 'lessThan': '212c59e5e416859579272288fd325148fc316109', 'versionType': 'git'}, {'status': 'affected', 'version': '967db3529ecac305d230aa4e60abddf6ab63543a', 'lessThan': '53e17d9ed779ad25870abb9c31bc294c71a2278c', 'versionType': 'git'}, {'status': 'affected', 'version': '967db3529ecac305d230aa4e60abddf6ab63543a', 'lessThan': '3de77d2f34c2bc2acaedabc2c5e0a561b85c283a', 'versionType': 'git'}, {'status': 'affected', 'version': '967db3529ecac305d230aa4e60abddf6ab63543a', 'lessThan': '3cf83432e0561aef6d7ec2664909d12d0ff0ffc1', 'versionType': 'git'}, {'status': 'affected', 'version': '967db3529ecac305d230aa4e60abddf6ab63543a', 'lessThan': 'fabb881df322da25442f98d23f5fa371e3c78ec4', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.14', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'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/marvell/octeontx2/af/rvu_nix.c'], 'defaultStatus': 'affected'}]
    Added Description In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: fix VF bringup affecting PF promiscuous state Mbox handling of nix_set_rx_mode for a VF with promiscuous and all_multi flags set to false causes deletion of the PF's promiscuous and allmulti MCAM rules. This occurs because the APIs that enable/disable these rules operate only on the PF, even when the mbox request is made via a VF interface. Guard both rvu_npc_enable_allmulti_entry() and rvu_npc_enable_promisc_entry() disable paths with an is_vf() check so that a VF bringing up or tearing down its interface cannot inadvertently clear the PF's MCAM rules.
    Added Reference https://git.kernel.org/stable/c/212c59e5e416859579272288fd325148fc316109
    Added Reference https://git.kernel.org/stable/c/3cf83432e0561aef6d7ec2664909d12d0ff0ffc1
    Added Reference https://git.kernel.org/stable/c/3de77d2f34c2bc2acaedabc2c5e0a561b85c283a
    Added Reference https://git.kernel.org/stable/c/53e17d9ed779ad25870abb9c31bc294c71a2278c
    Added Reference https://git.kernel.org/stable/c/daa2451640a3e0727fd598f5c2ccb8bb4d5a8b9c
    Added Reference https://git.kernel.org/stable/c/fabb881df322da25442f98d23f5fa371e3c78ec4
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: 7.9
Attack Vector
Attack Complexity
Privileges Required
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Scope
Confidentiality Impact
Integrity Impact
Availability Impact