{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2026-72409", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-72409", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-08-15T05:56:32.152Z", "updatedAt": "2026-10-16T18:55:22.213Z", "importedAt": "2026-10-24T01:58:25.636Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "net: mvneta: re-enable percpu interrupt on resume", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mvneta: re-enable percpu interrupt on resume\n\nOn Marvell MPIC platforms (Armada 370/XP/38x), mvneta uses a percpu\nIRQ disable/enable scheme for NAPI: the ISR (mvneta_percpu_isr) calls\ndisable_percpu_irq() to mask the MPIC per-CPU interrupt and schedules\nNAPI poll, which calls enable_percpu_irq() on completion to unmask.\n\nIf suspend occurs while NAPI poll is pending (between\ndisable_percpu_irq in the ISR and enable_percpu_irq in poll\ncompletion), the interrupt is never re-enabled:\n\n 1. mvneta_percpu_isr: disable_percpu_irq() + napi_schedule()\n => MPIC masked, percpu_enabled cpumask bit cleared\n 2. NAPI poll does not complete before suspend proceeds\n (on PREEMPT_RT this is highly likely since softirqs run in\n ksoftirqd which gets frozen; on non-RT it can happen when\n softirq processing is deferred to ksoftirqd)\n 3. mvneta_stop_dev => napi_disable(): cancels the pending poll\n without executing the completion path\n 4. suspend_device_irqs => IRQCHIP_MASK_ON_SUSPEND: masks MPIC\n (already masked, but records IRQS_SUSPENDED)\n 5. Resume: mpic_resume checks irq_percpu_is_enabled() => false\n (bit was cleared in step 1) => skips unmask\n 6. mvneta_start_dev only restores device-level INTR_NEW_MASK,\n does not touch the MPIC per-CPU mask\n\nResult: MPIC per-CPU interrupt stays masked permanently. The NIC\ngenerates interrupts (INTR_NEW_CAUSE != 0) but the CPU never\nreceives them, causing complete loss of network connectivity.\n\nFix by calling on_each_cpu(mvneta_percpu_enable) in the resume path\nto unconditionally unmask the MPIC per-CPU interrupt regardless of\npre-suspend state.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "12bb03b436dad56692e9a103ed26156156bef5d2", "status": "affected", "versionType": "git", "lessThan": "bf88cd3b649bc3e638f1e8a77649581852747a68" }, { "version": "12bb03b436dad56692e9a103ed26156156bef5d2", "status": "affected", "versionType": "git", "lessThan": "8c7a489aa71d2693752b2e794a68bf672d16c829" }, { "version": "12bb03b436dad56692e9a103ed26156156bef5d2", "status": "affected", "versionType": "git", "lessThan": "82c13027ed283b856017adee970dbfdffce5c6b8" }, { "version": "12bb03b436dad56692e9a103ed26156156bef5d2", "status": "affected", "versionType": "git", "lessThan": "be626ac1faadd49c2cead9f9cd06ba8752d81563" }, { "version": "12bb03b436dad56692e9a103ed26156156bef5d2", "status": "affected", "versionType": "git", "lessThan": "1cc312dc8bc78fa24c80d5bc193dbf5b57a99cc6" }, { "version": "12bb03b436dad56692e9a103ed26156156bef5d2", "status": "affected", "versionType": "git", "lessThan": "b84dd48f9da1eb132bdc06a944423cd5a1641ef1" }, { "version": "12bb03b436dad56692e9a103ed26156156bef5d2", "status": "affected", "versionType": "git", "lessThan": "5bdb33ff6e58bdc43632e98b30723eb65352d671" }, { "version": "12bb03b436dad56692e9a103ed26156156bef5d2", "status": "affected", "versionType": "git", "lessThan": "fd398d6480987e4c84fff0aaab6b9d6642a93343" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "4.4", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "4.4" }, { "version": "5.10.261", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.212", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.178", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.145", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.97", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.18.40", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.18.*" }, { "version": "7.1.5", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "7.1.*" }, { "version": "7.2", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }