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7.5
HIGH CVSS 3.1
CVE-2026-72409
net: mvneta: re-enable percpu interrupt on resume
Overview
Description

In the Linux kernel, the following vulnerability has been resolved: net: mvneta: re-enable percpu interrupt on resume On Marvell MPIC platforms (Armada 370/XP/38x), mvneta uses a percpu IRQ disable/enable scheme for NAPI: the ISR (mvneta_percpu_isr) calls disable_percpu_irq() to mask the MPIC per-CPU interrupt and schedules NAPI poll, which calls enable_percpu_irq() on completion to unmask. If suspend occurs while NAPI poll is pending (between disable_percpu_irq in the ISR and enable_percpu_irq in poll completion), the interrupt is never re-enabled: 1. mvneta_percpu_isr: disable_percpu_irq() + napi_schedule() => MPIC masked, percpu_enabled cpumask bit cleared 2. NAPI poll does not complete before suspend proceeds (on PREEMPT_RT this is highly likely since softirqs run in ksoftirqd which gets frozen; on non-RT it can happen when softirq processing is deferred to ksoftirqd) 3. mvneta_stop_dev => napi_disable(): cancels the pending poll without executing the completion path 4. suspend_device_irqs => IRQCHIP_MASK_ON_SUSPEND: masks MPIC (already masked, but records IRQS_SUSPENDED) 5. Resume: mpic_resume checks irq_percpu_is_enabled() => false (bit was cleared in step 1) => skips unmask 6. mvneta_start_dev only restores device-level INTR_NEW_MASK, does not touch the MPIC per-CPU mask Result: MPIC per-CPU interrupt stays masked permanently. The NIC generates interrupts (INTR_NEW_CAUSE != 0) but the CPU never receives them, causing complete loss of network connectivity. Fix by calling on_each_cpu(mvneta_percpu_enable) in the resume path to unconditionally unmask the MPIC per-CPU interrupt regardless of pre-suspend state.

Details
INFO

Published Date :

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

Last Modified :

Aug. 17, 2026, 6:19 a.m.

Remotely Exploit :

Yes !

Source :

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

The following products are affected by CVE-2026-72409 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
Unmask per-CPU interrupts on resume to restore network connectivity.
  • Apply the fix to unconditionally unmask per-CPU interrupts.
  • Ensure the resume path correctly handles interrupt re-enabling.
  • Test network connectivity after applying the fix.
  • Update the Linux kernel to the patched version.
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-2026-72409.

URL Resource
https://git.kernel.org/stable/c/1cc312dc8bc78fa24c80d5bc193dbf5b57a99cc6
https://git.kernel.org/stable/c/5bdb33ff6e58bdc43632e98b30723eb65352d671
https://git.kernel.org/stable/c/82c13027ed283b856017adee970dbfdffce5c6b8
https://git.kernel.org/stable/c/8c7a489aa71d2693752b2e794a68bf672d16c829
https://git.kernel.org/stable/c/b84dd48f9da1eb132bdc06a944423cd5a1641ef1
https://git.kernel.org/stable/c/be626ac1faadd49c2cead9f9cd06ba8752d81563
https://git.kernel.org/stable/c/bf88cd3b649bc3e638f1e8a77649581852747a68
https://git.kernel.org/stable/c/fd398d6480987e4c84fff0aaab6b9d6642a93343
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-72409 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-2026-72409 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-2026-72409 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-2026-72409 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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': 'bf88cd3b649bc3e638f1e8a77649581852747a68', 'versionType': 'git'}, {'status': 'affected', 'version': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': '8c7a489aa71d2693752b2e794a68bf672d16c829', 'versionType': 'git'}, {'status': 'affected', 'version': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': '82c13027ed283b856017adee970dbfdffce5c6b8', 'versionType': 'git'}, {'status': 'affected', 'version': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': 'be626ac1faadd49c2cead9f9cd06ba8752d81563', 'versionType': 'git'}, {'status': 'affected', 'version': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': '1cc312dc8bc78fa24c80d5bc193dbf5b57a99cc6', 'versionType': 'git'}, {'status': 'affected', 'version': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': 'b84dd48f9da1eb132bdc06a944423cd5a1641ef1', 'versionType': 'git'}, {'status': 'affected', 'version': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': '5bdb33ff6e58bdc43632e98b30723eb65352d671', 'versionType': 'git'}, {'status': 'affected', 'version': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': 'fd398d6480987e4c84fff0aaab6b9d6642a93343', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/marvell/mvneta.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.4'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.4', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'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-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/marvell/mvneta.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': 'bf88cd3b649bc3e638f1e8a77649581852747a68', 'versionType': 'git'}, {'status': 'affected', 'version': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': '8c7a489aa71d2693752b2e794a68bf672d16c829', 'versionType': 'git'}, {'status': 'affected', 'version': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': '82c13027ed283b856017adee970dbfdffce5c6b8', 'versionType': 'git'}, {'status': 'affected', 'version': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': 'be626ac1faadd49c2cead9f9cd06ba8752d81563', 'versionType': 'git'}, {'status': 'affected', 'version': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': '1cc312dc8bc78fa24c80d5bc193dbf5b57a99cc6', 'versionType': 'git'}, {'status': 'affected', 'version': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': 'b84dd48f9da1eb132bdc06a944423cd5a1641ef1', 'versionType': 'git'}, {'status': 'affected', 'version': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': '5bdb33ff6e58bdc43632e98b30723eb65352d671', 'versionType': 'git'}, {'status': 'affected', 'version': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': 'fd398d6480987e4c84fff0aaab6b9d6642a93343', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/marvell/mvneta.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.4'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.4', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'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/mvneta.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': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': 'bf88cd3b649bc3e638f1e8a77649581852747a68', 'versionType': 'git'}, {'status': 'affected', 'version': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': '8c7a489aa71d2693752b2e794a68bf672d16c829', 'versionType': 'git'}, {'status': 'affected', 'version': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': '82c13027ed283b856017adee970dbfdffce5c6b8', 'versionType': 'git'}, {'status': 'affected', 'version': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': 'be626ac1faadd49c2cead9f9cd06ba8752d81563', 'versionType': 'git'}, {'status': 'affected', 'version': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': '1cc312dc8bc78fa24c80d5bc193dbf5b57a99cc6', 'versionType': 'git'}, {'status': 'affected', 'version': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': 'b84dd48f9da1eb132bdc06a944423cd5a1641ef1', 'versionType': 'git'}, {'status': 'affected', 'version': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': '5bdb33ff6e58bdc43632e98b30723eb65352d671', 'versionType': 'git'}, {'status': 'affected', 'version': '12bb03b436dad56692e9a103ed26156156bef5d2', 'lessThan': 'fd398d6480987e4c84fff0aaab6b9d6642a93343', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/marvell/mvneta.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.4'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.4', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'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-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/marvell/mvneta.c'], 'defaultStatus': 'affected'}]
    Added Description In the Linux kernel, the following vulnerability has been resolved: net: mvneta: re-enable percpu interrupt on resume On Marvell MPIC platforms (Armada 370/XP/38x), mvneta uses a percpu IRQ disable/enable scheme for NAPI: the ISR (mvneta_percpu_isr) calls disable_percpu_irq() to mask the MPIC per-CPU interrupt and schedules NAPI poll, which calls enable_percpu_irq() on completion to unmask. If suspend occurs while NAPI poll is pending (between disable_percpu_irq in the ISR and enable_percpu_irq in poll completion), the interrupt is never re-enabled: 1. mvneta_percpu_isr: disable_percpu_irq() + napi_schedule() => MPIC masked, percpu_enabled cpumask bit cleared 2. NAPI poll does not complete before suspend proceeds (on PREEMPT_RT this is highly likely since softirqs run in ksoftirqd which gets frozen; on non-RT it can happen when softirq processing is deferred to ksoftirqd) 3. mvneta_stop_dev => napi_disable(): cancels the pending poll without executing the completion path 4. suspend_device_irqs => IRQCHIP_MASK_ON_SUSPEND: masks MPIC (already masked, but records IRQS_SUSPENDED) 5. Resume: mpic_resume checks irq_percpu_is_enabled() => false (bit was cleared in step 1) => skips unmask 6. mvneta_start_dev only restores device-level INTR_NEW_MASK, does not touch the MPIC per-CPU mask Result: MPIC per-CPU interrupt stays masked permanently. The NIC generates interrupts (INTR_NEW_CAUSE != 0) but the CPU never receives them, causing complete loss of network connectivity. Fix by calling on_each_cpu(mvneta_percpu_enable) in the resume path to unconditionally unmask the MPIC per-CPU interrupt regardless of pre-suspend state.
    Added Reference https://git.kernel.org/stable/c/1cc312dc8bc78fa24c80d5bc193dbf5b57a99cc6
    Added Reference https://git.kernel.org/stable/c/5bdb33ff6e58bdc43632e98b30723eb65352d671
    Added Reference https://git.kernel.org/stable/c/82c13027ed283b856017adee970dbfdffce5c6b8
    Added Reference https://git.kernel.org/stable/c/8c7a489aa71d2693752b2e794a68bf672d16c829
    Added Reference https://git.kernel.org/stable/c/b84dd48f9da1eb132bdc06a944423cd5a1641ef1
    Added Reference https://git.kernel.org/stable/c/be626ac1faadd49c2cead9f9cd06ba8752d81563
    Added Reference https://git.kernel.org/stable/c/bf88cd3b649bc3e638f1e8a77649581852747a68
    Added Reference https://git.kernel.org/stable/c/fd398d6480987e4c84fff0aaab6b9d6642a93343
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: 7.5
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