CVE-2026-72409

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-15. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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:

  • mvneta_percpu_isr: disable_percpu_irq() + napi_schedule()
=> MPIC masked, percpu_enabled cpumask bit cleared
  • 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)
  • mvneta_stop_dev => napi_disable(): cancels the pending poll
without executing the completion path
  • suspend_device_irqs => IRQCHIP_MASK_ON_SUSPEND: masks MPIC
(already masked, but records IRQS_SUSPENDED)
  • Resume: mpic_resume checks irq_percpu_is_enabled() => false
(bit was cleared in step 1) => skips unmask
  • 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.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
39(Track)
EG Risk 39/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
50%
KEV
Not listed

Published

August 15, 2026

Last Modified

August 17, 2026

Advisory Details (8)

Auto-updated Aug 17, 2026
No patch confirmed yet.
generic

net: mvneta: re-enable percpu interrupt on resume - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fd398d6480987e4c84fff0aaab6b9d6642a93343
generic

net: mvneta: re-enable percpu interrupt on resume - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bf88cd3b649bc3e638f1e8a77649581852747a68
generic

net: mvneta: re-enable percpu interrupt on resume - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/be626ac1faadd49c2cead9f9cd06ba8752d81563
generic

net: mvneta: re-enable percpu interrupt on resume - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b84dd48f9da1eb132bdc06a944423cd5a1641ef1
generic

net: mvneta: re-enable percpu interrupt on resume - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8c7a489aa71d2693752b2e794a68bf672d16c829
generic

net: mvneta: re-enable percpu interrupt on resume - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/82c13027ed283b856017adee970dbfdffce5c6b8
generic

net: mvneta: re-enable percpu interrupt on resume - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5bdb33ff6e58bdc43632e98b30723eb65352d671
generic

net: mvneta: re-enable percpu interrupt on resume - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1cc312dc8bc78fa24c80d5bc193dbf5b57a99cc6

Vendor Advisories for CVE-2026-72409(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Data Freshness Timeline

(refreshed 28× in last 7d / 28× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-20 10:56 UTCGHSA enrichment
  2. 2026-08-19 22:12 UTCEG score recompute
  3. 2026-08-19 22:12 UTCGHSA enrichment
  4. 2026-08-19 17:04 UTCEPSS rescore
  5. 2026-08-19 09:24 UTCGHSA enrichment
  6. 2026-08-18 20:40 UTCEG score recompute
  7. 2026-08-18 20:40 UTCGHSA enrichment
  8. 2026-08-18 13:49 UTCEPSS rescore
  9. 2026-08-18 13:49 UTCEPSS rescore
  10. 2026-08-18 07:56 UTCGHSA enrichment
  11. 2026-08-17 19:13 UTCEG score recompute
  12. 2026-08-17 19:13 UTCGHSA enrichment
  13. 2026-08-17 13:47 UTCEPSS rescore
  14. 2026-08-17 06:29 UTCEG score recompute
  15. 2026-08-17 06:28 UTCGHSA enrichment
  16. 2026-08-17 05:57 UTCEG score recompute▲ 7.50
  17. 2026-08-17 05:57 UTCGHSA enrichment
  18. 2026-08-17 05:54 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
  19. 2026-08-17 05:29 UTCEG score recompute
  20. 2026-08-17 05:29 UTCGHSA enrichment
  21. 2026-08-17 05:24 UTCMITRE cvelistV5
  22. 2026-08-16 14:56 UTCEPSS rescore
  23. 2026-08-16 14:56 UTCEPSS rescore
  24. 2026-08-16 02:15 UTCEPSS rescore
  25. 2026-08-15 06:34 UTCGHSA enrichment
Show 3 more
  1. 2026-08-15 06:23 UTCNVD update
  2. 2026-08-15 06:05 UTCEG score recompute
  3. 2026-08-15 06:02 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-72409?
CVE-2026-72409 is a high vulnerability published on August 15, 2026. 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 (mvnetapercpuisr) calls disablepercpuirq() to mask the MPIC per-CPU…
When was CVE-2026-72409 disclosed?
CVE-2026-72409 was first published in the National Vulnerability Database on August 15, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72409 actively exploited?
CVE-2026-72409 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 50.2% of all scored CVEs.
What is the CVSS score of CVE-2026-72409?
CVE-2026-72409 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-72409?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-72409, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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