CVE-2026-72409

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72409", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.926Z", "datePublished": "2026-08-15T05:56:32.152Z", "dateUpdated": "2026-10-16T18:55:22.213Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:43:49.648Z"}, "descriptions": [{"lang": "en", "value": "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."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:N - Remote traffic on internet-facing Marvell Armada 370/XP/38x routers, NAS, and gateways drives mvneta_percpu_isr/NAPI (race step 1); the highest-impact scenario pairs sustained RX/TX load with automatic suspend/resume, so the attack is initiated from the network.\nAC:L - On PREEMPT_RT (called highly likely in the fix) or when softirq is deferred to ksoftirqd, an attacker can sustain traffic to keep NAPI pending across suspend; no uncontrollable memory layout or rare one-shot victim state is required beyond routine PM cycles.\nPR:N - Sending packets to the mvneta interface requires no credentials; in the strongest scenario suspend/resume is driven by automatic system power management rather than privileged manual action, so no account or capability on the victim is needed.\nUI:N - No victim user action is required beyond normal operation; remote traffic and automatic suspend/resume (or scheduled PM) suffice without anyone mounting devices or confirming prompts.\nS:U - The bug leaves the MPIC per-CPU IRQ permanently masked on the same host kernel/driver boundary; it does not cross VM, container, or IOMMU security domains.\nC:N - This is a driver/IRQ state-management logic error with no out-of-bounds access, use-after-free, or memory disclosure; interrupts stay masked but no kernel memory is read.\nI:N - No data structures or packets are corrupted; the failure mode is a permanently masked interrupt with no write primitive or control-flow hijack potential.\nA:H - After resume the MPIC per-CPU interrupt remains permanently masked, so the NIC never delivers packets despite hardware activity, causing complete and lasting loss of network connectivity until reboot."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/marvell/mvneta.c"], "versions": [{"version": "12bb03b436dad56692e9a103ed26156156bef5d2", "lessThan": "bf88cd3b649bc3e638f1e8a77649581852747a68", "status": "affected", "versionType": "git"}, {"version": "12bb03b436dad56692e9a103ed26156156bef5d2", "lessThan": "8c7a489aa71d2693752b2e794a68bf672d16c829", "status": "affected", "versionType": "git"}, {"version": "12bb03b436dad56692e9a103ed26156156bef5d2", "lessThan": "82c13027ed283b856017adee970dbfdffce5c6b8", "status": "affected", "versionType": "git"}, {"version": "12bb03b436dad56692e9a103ed26156156bef5d2", "lessThan": "be626ac1faadd49c2cead9f9cd06ba8752d81563", "status": "affected", "versionType": "git"}, {"version": "12bb03b436dad56692e9a103ed26156156bef5d2", "lessThan": "1cc312dc8bc78fa24c80d5bc193dbf5b57a99cc6", "status": "affected", "versionType": "git"}, {"version": "12bb03b436dad56692e9a103ed26156156bef5d2", "lessThan": "b84dd48f9da1eb132bdc06a944423cd5a1641ef1", "status": "affected", "versionType": "git"}, {"version": "12bb03b436dad56692e9a103ed26156156bef5d2", "lessThan": "5bdb33ff6e58bdc43632e98b30723eb65352d671", "status": "affected", "versionType": "git"}, {"version": "12bb03b436dad56692e9a103ed26156156bef5d2", "lessThan": "fd398d6480987e4c84fff0aaab6b9d6642a93343", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/marvell/mvneta.c"], "versions": [{"version": "4.4", "status": "affected"}, {"version": "0", "lessThan": "4.4", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "5.10.261"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "5.15.212"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.4", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/bf88cd3b649bc3e638f1e8a77649581852747a68"}, {"url": "https://git.kernel.org/stable/c/8c7a489aa71d2693752b2e794a68bf672d16c829"}, {"url": "https://git.kernel.org/stable/c/82c13027ed283b856017adee970dbfdffce5c6b8"}, {"url": "https://git.kernel.org/stable/c/be626ac1faadd49c2cead9f9cd06ba8752d81563"}, {"url": "https://git.kernel.org/stable/c/1cc312dc8bc78fa24c80d5bc193dbf5b57a99cc6"}, {"url": "https://git.kernel.org/stable/c/b84dd48f9da1eb132bdc06a944423cd5a1641ef1"}, {"url": "https://git.kernel.org/stable/c/5bdb33ff6e58bdc43632e98b30723eb65352d671"}, {"url": "https://git.kernel.org/stable/c/fd398d6480987e4c84fff0aaab6b9d6642a93343"}], "title": "net: mvneta: re-enable percpu interrupt on resume", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-72409", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-16T18:49:13.017025Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T18:55:22.213Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-72409", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-16T18:49:13.017025Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T18:49:13.582Z"}}], "cna": {"title": "net: mvneta: re-enable percpu interrupt on resume", "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.5, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}, "scenarios": [{"lang": "en", "value": "AV:N - Remote traffic on internet-facing Marvell Armada 370/XP/38x routers, NAS, and gateways drives mvneta_percpu_isr/NAPI (race step 1); the highest-impact scenario pairs sustained RX/TX load with automatic suspend/resume, so the attack is initiated from the network.\nAC:L - On PREEMPT_RT (called highly likely in the fix) or when softirq is deferred to ksoftirqd, an attacker can sustain traffic to keep NAPI pending across suspend; no uncontrollable memory layout or rare one-shot victim state is required beyond routine PM cycles.\nPR:N - Sending packets to the mvneta interface requires no credentials; in the strongest scenario suspend/resume is driven by automatic system power management rather than privileged manual action, so no account or capability on the victim is needed.\nUI:N - No victim user action is required beyond normal operation; remote traffic and automatic suspend/resume (or scheduled PM) suffice without anyone mounting devices or confirming prompts.\nS:U - The bug leaves the MPIC per-CPU IRQ permanently masked on the same host kernel/driver boundary; it does not cross VM, container, or IOMMU security domains.\nC:N - This is a driver/IRQ state-management logic error with no out-of-bounds access, use-after-free, or memory disclosure; interrupts stay masked but no kernel memory is read.\nI:N - No data structures or packets are corrupted; the failure mode is a permanently masked interrupt with no write primitive or control-flow hijack potential.\nA:H - After resume the MPIC per-CPU interrupt remains permanently masked, so the NIC never delivers packets despite hardware activity, causing complete and lasting loss of network connectivity until reboot."}]}], "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"}], "references": [{"url": "https://git.kernel.org/stable/c/bf88cd3b649bc3e638f1e8a77649581852747a68"}, {"url": "https://git.kernel.org/stable/c/8c7a489aa71d2693752b2e794a68bf672d16c829"}, {"url": "https://git.kernel.org/stable/c/82c13027ed283b856017adee970dbfdffce5c6b8"}, {"url": "https://git.kernel.org/stable/c/be626ac1faadd49c2cead9f9cd06ba8752d81563"}, {"url": "https://git.kernel.org/stable/c/1cc312dc8bc78fa24c80d5bc193dbf5b57a99cc6"}, {"url": "https://git.kernel.org/stable/c/b84dd48f9da1eb132bdc06a944423cd5a1641ef1"}, {"url": "https://git.kernel.org/stable/c/5bdb33ff6e58bdc43632e98b30723eb65352d671"}, {"url": "https://git.kernel.org/stable/c/fd398d6480987e4c84fff0aaab6b9d6642a93343"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "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."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.261", "versionStartIncluding": "4.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.212", "versionStartIncluding": "4.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.178", "versionStartIncluding": "4.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.145", "versionStartIncluding": "4.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.97", "versionStartIncluding": "4.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.40", "versionStartIncluding": "4.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.5", "versionStartIncluding": "4.4"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "4.4"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:43:49.648Z"}}}, "cveMetadata": {"cveId": "CVE-2026-72409", "state": "PUBLISHED", "dateUpdated": "2026-10-16T18:55:22.213Z", "dateReserved": "2026-08-09T03:40:39.926Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-08-15T05:56:32.152Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/marvell/mvneta.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "bf88cd3b649bc3e638f1e8a77649581852747a68", "status": "affected", "version": "12bb03b436dad56692e9a103ed26156156bef5d2", "versionType": "git"}, {"lessThan": "8c7a489aa71d2693752b2e794a68bf672d16c829", "status": "affected", "version": "12bb03b436dad56692e9a103ed26156156bef5d2", "versionType": "git"}, {"lessThan": "82c13027ed283b856017adee970dbfdffce5c6b8", "status": "affected", "version": "12bb03b436dad56692e9a103ed26156156bef5d2", "versionType": "git"}, {"lessThan": "be626ac1faadd49c2cead9f9cd06ba8752d81563", "status": "affected", "version": "12bb03b436dad56692e9a103ed26156156bef5d2", "versionType": "git"}, {"lessThan": "1cc312dc8bc78fa24c80d5bc193dbf5b57a99cc6", "status": "affected", "version": "12bb03b436dad56692e9a103ed26156156bef5d2", "versionType": "git"}, {"lessThan": "b84dd48f9da1eb132bdc06a944423cd5a1641ef1", "status": "affected", "version": "12bb03b436dad56692e9a103ed26156156bef5d2", "versionType": "git"}, {"lessThan": "5bdb33ff6e58bdc43632e98b30723eb65352d671", "status": "affected", "version": "12bb03b436dad56692e9a103ed26156156bef5d2", "versionType": "git"}, {"lessThan": "fd398d6480987e4c84fff0aaab6b9d6642a93343", "status": "affected", "version": "12bb03b436dad56692e9a103ed26156156bef5d2", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/marvell/mvneta.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.4"}, {"lessThan": "4.4", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.261", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.212", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.178", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.145", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.97", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-72409", "lastModified": "2026-10-16T19:17:28.580", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-72409", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T18:49:13.017025Z", "version": "2.0.3"}}]}, "published": "2026-08-15T06:22:14.493", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1cc312dc8bc78fa24c80d5bc193dbf5b57a99cc6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5bdb33ff6e58bdc43632e98b30723eb65352d671"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/82c13027ed283b856017adee970dbfdffce5c6b8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8c7a489aa71d2693752b2e794a68bf672d16c829"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b84dd48f9da1eb132bdc06a944423cd5a1641ef1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/be626ac1faadd49c2cead9f9cd06ba8752d81563"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bf88cd3b649bc3e638f1e8a77649581852747a68"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fd398d6480987e4c84fff0aaab6b9d6642a93343"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: net: mvneta: re-enable percpu interrupt on resume", "id": "2516625", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516625"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: mvneta: re-enable percpu interrupt on resume\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.\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:\n1. mvneta_percpu_isr: disable_percpu_irq() + napi_schedule()\n=> MPIC masked, percpu_enabled cpumask bit cleared\n2. NAPI poll does not complete before suspend proceeds\n(on PREEMPT_RT this is highly likely since softirqs run in\nksoftirqd which gets frozen; on non-RT it can happen when\nsoftirq processing is deferred to ksoftirqd)\n3. mvneta_stop_dev => napi_disable(): cancels the pending poll\nwithout executing the completion path\n4. suspend_device_irqs => IRQCHIP_MASK_ON_SUSPEND: masks MPIC\n(already masked, but records IRQS_SUSPENDED)\n5. Resume: mpic_resume checks irq_percpu_is_enabled() => false\n(bit was cleared in step 1) => skips unmask\n6. mvneta_start_dev only restores device-level INTR_NEW_MASK,\ndoes not touch the MPIC per-CPU mask\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.\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.", "A flaw was found in the Linux kernel's `mvneta` network driver. When a system utilizing this driver enters and exits suspend mode, if a Networked Asynchronous Packet Interface (NAPI) poll operation is pending, the per-CPU interrupt may not be correctly re-enabled upon resume. This oversight results in the permanent masking of the per-CPU interrupt, preventing the CPU from receiving network interrupts and leading to a complete loss of network connectivity."], "name": "CVE-2026-72409", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72409\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72409\nhttps://lore.kernel.org/linux-cve-announce/2026081523-CVE-2026-72409-ac2d@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[12bb03b436dad56692e9a103ed26156156bef5d2,bf88cd3b649bc3e638f1e8a77649581852747a68)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[12bb03b436dad56692e9a103ed26156156bef5d2,8c7a489aa71d2693752b2e794a68bf672d16c829)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[12bb03b436dad56692e9a103ed26156156bef5d2,82c13027ed283b856017adee970dbfdffce5c6b8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[12bb03b436dad56692e9a103ed26156156bef5d2,be626ac1faadd49c2cead9f9cd06ba8752d81563)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[12bb03b436dad56692e9a103ed26156156bef5d2,1cc312dc8bc78fa24c80d5bc193dbf5b57a99cc6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[12bb03b436dad56692e9a103ed26156156bef5d2,b84dd48f9da1eb132bdc06a944423cd5a1641ef1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[12bb03b436dad56692e9a103ed26156156bef5d2,5bdb33ff6e58bdc43632e98b30723eb65352d671)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[12bb03b436dad56692e9a103ed26156156bef5d2,fd398d6480987e4c84fff0aaab6b9d6642a93343)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.4"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,4.4)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.261,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.212,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.178,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.145,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.97,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.40,6.19.0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-15T11:15:03.436110+00:00", "updated": "2026-08-22T04:30:06.710279+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-732", "CWE-772"]}