{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-37917", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:23.967Z", "datePublished": "2025-05-20T15:21:47.703Z", "dateUpdated": "2026-08-05T11:58:19.708Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:58:19.708Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: mtk-star-emac: fix spinlock recursion issues on rx/tx poll\n\nUse spin_lock_irqsave and spin_unlock_irqrestore instead of spin_lock\nand spin_unlock in mtk_star_emac driver to avoid spinlock recursion\noccurrence that can happen when enabling the DMA interrupts again in\nrx/tx poll.\n\n```\nBUG: spinlock recursion on CPU#0, swapper/0/0\n lock: 0xffff00000db9cf20, .magic: dead4ead, .owner: swapper/0/0,\n .owner_cpu: 0\nCPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted\n 6.15.0-rc2-next-20250417-00001-gf6a27738686c-dirty #28 PREEMPT\nHardware name: MediaTek MT8365 Open Platform EVK (DT)\nCall trace:\n show_stack+0x18/0x24 (C)\n dump_stack_lvl+0x60/0x80\n dump_stack+0x18/0x24\n spin_dump+0x78/0x88\n do_raw_spin_lock+0x11c/0x120\n _raw_spin_lock+0x20/0x2c\n mtk_star_handle_irq+0xc0/0x22c [mtk_star_emac]\n __handle_irq_event_percpu+0x48/0x140\n handle_irq_event+0x4c/0xb0\n handle_fasteoi_irq+0xa0/0x1bc\n handle_irq_desc+0x34/0x58\n generic_handle_domain_irq+0x1c/0x28\n gic_handle_irq+0x4c/0x120\n do_interrupt_handler+0x50/0x84\n el1_interrupt+0x34/0x68\n el1h_64_irq_handler+0x18/0x24\n el1h_64_irq+0x6c/0x70\n regmap_mmio_read32le+0xc/0x20 (P)\n _regmap_bus_reg_read+0x6c/0xac\n _regmap_read+0x60/0xdc\n regmap_read+0x4c/0x80\n mtk_star_rx_poll+0x2f4/0x39c [mtk_star_emac]\n __napi_poll+0x38/0x188\n net_rx_action+0x164/0x2c0\n handle_softirqs+0x100/0x244\n __do_softirq+0x14/0x20\n ____do_softirq+0x10/0x20\n call_on_irq_stack+0x24/0x64\n do_softirq_own_stack+0x1c/0x40\n __irq_exit_rcu+0xd4/0x10c\n irq_exit_rcu+0x10/0x1c\n el1_interrupt+0x38/0x68\n el1h_64_irq_handler+0x18/0x24\n el1h_64_irq+0x6c/0x70\n cpuidle_enter_state+0xac/0x320 (P)\n cpuidle_enter+0x38/0x50\n do_idle+0x1e4/0x260\n cpu_startup_entry+0x34/0x3c\n rest_init+0xdc/0xe0\n console_on_rootfs+0x0/0x6c\n __primary_switched+0x88/0x90\n```" } ], "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 - The race is driven entirely by Ethernet frame reception and the resulting transmit-completion interrupts on the MAC, so any remote peer able to send routed packets to the affected interface (these SoCs are commonly IoT/embedded gateways) can drive it. No local access is needed.\nAC:L - The attacker creates both sides of the race by flooding the interface: inbound frames schedule RX NAPI while the host's replies generate TX-complete interrupts that hit the same CPU during the lock-held MMIO window, and the flood can be sustained indefinitely until the collision occurs (it was observed during ordinary traffic testing).\nPR:N - The code path is the driver's packet receive/transmit interrupt and NAPI handling, executed on any incoming frame with no authentication, credentials, or capability check whatsoever.\nUI:N - No victim action is required; the deadlock occurs in interrupt/softirq context purely as a result of attacker-generated traffic.\nS:U - The deadlock is confined to the kernel of the affected host and does not cross into another security authority such as a hypervisor or IOMMU boundary.\nC:N - The lock protects only a read-modify-write of the interrupt-mask register; the recursion causes a hang and exposes no memory contents or kernel data to the attacker.\nI:N - No memory corruption, out-of-bounds access, or data modification results from the spinlock recursion — the CPU simply spins on a lock it already holds.\nA:H - The self-deadlock wedges the CPU in interrupt context while holding priv->lock, producing a spinlock-recursion BUG and a hard lockup that stalls networking and typically hangs the system." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/mediatek/mtk_star_emac.c" ], "versions": [ { "version": "97da99868573b8861de83f7126a5981d896c1d6c", "lessThan": "bedd287fdd3142dffad7ae2ac6ef15f4a2ad0629", "status": "affected", "versionType": "git" }, { "version": "0a8bd81fd6aaace14979152e0540da8ff158a00a", "lessThan": "94107259f972d2fd896dbbcaa176b3b2451ff9e5", "status": "affected", "versionType": "git" }, { "version": "0a8bd81fd6aaace14979152e0540da8ff158a00a", "lessThan": "7cb10f17bddc415f30fbc00a4e2b490e0d94c462", "status": "affected", "versionType": "git" }, { "version": "0a8bd81fd6aaace14979152e0540da8ff158a00a", "lessThan": "8d40bf73fa7f31eac2b0a7c9d85de67df82ee7f3", "status": "affected", "versionType": "git" }, { "version": "0a8bd81fd6aaace14979152e0540da8ff158a00a", "lessThan": "d886f8d85494d12b2752fd7c6c32162d982d5dd5", "status": "affected", "versionType": "git" }, { "version": "0a8bd81fd6aaace14979152e0540da8ff158a00a", "lessThan": "6fe0866014486736cc3ba1c6fd4606d3dbe55c9c", "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/mediatek/mtk_star_emac.c" ], "versions": [ { "version": "6.0", "status": "affected" }, { "version": "0", "lessThan": "6.0", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.138", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.90", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.28", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.14.6", "lessThanOrEqual": "6.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.15", "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": "6.0", "versionEndExcluding": "6.1.138" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.6.90" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.12.28" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.14.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndExcluding": "6.15" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/bedd287fdd3142dffad7ae2ac6ef15f4a2ad0629" }, { "url": "https://git.kernel.org/stable/c/94107259f972d2fd896dbbcaa176b3b2451ff9e5" }, { "url": "https://git.kernel.org/stable/c/7cb10f17bddc415f30fbc00a4e2b490e0d94c462" }, { "url": "https://git.kernel.org/stable/c/8d40bf73fa7f31eac2b0a7c9d85de67df82ee7f3" }, { "url": "https://git.kernel.org/stable/c/d886f8d85494d12b2752fd7c6c32162d982d5dd5" }, { "url": "https://git.kernel.org/stable/c/6fe0866014486736cc3ba1c6fd4606d3dbe55c9c" } ], "title": "net: ethernet: mtk-star-emac: fix spinlock recursion issues on rx/tx poll", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T19:57:19.232Z" } }, { "x_adpType": "supplier", "providerMetadata": { "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-07-14T12:41:12.648Z" }, "affected": [ { "vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom" } ], "defaultStatus": "unknown" }, { "vendor": "Siemens", "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP", "versions": [ { "status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom" } ], "defaultStatus": "unknown" } ], "references": [ { "url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html" } ] } ] } }