CVE-2024-50297

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It results in following kernel crash\nwhile running iperf stress test:\n\nkernel BUG at lib/dynamic_queue_limits.c:99!\n<snip>\nInternal error: Oops - BUG: 00000000f2000800 [#1] SMP\npc : dql_completed+0x238/0x248\nlr : dql_completed+0x3c/0x248\n\nCall trace:\n dql_completed+0x238/0x248\n axienet_dma_tx_cb+0xa0/0x170\n xilinx_dma_do_tasklet+0xdc/0x290\n tasklet_action_common+0xf8/0x11c\n tasklet_action+0x30/0x3c\n handle_softirqs+0xf8/0x230\n<snip>\n\nStart dmaengine after enqueue in dql fixes the crash."}], "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 vulnerable code is the NIC's `ndo_start_xmit` handler, driven directly by a remote peer's traffic \u2014 TCP ACKs, SYN-ACKs, and ICMP echo replies generated in response to a remote flood exercise this path at line rate, which is exactly the iperf stress condition that produced the reported panic. No local access is needed; a routed, internet-facing attacker suffices.\nAC:L - The attacker controls the enqueue side of the race and its packet rate, and can sustain traffic indefinitely until the DMA completion tasklet lands in the window between `dma_async_issue_pending()` and `netdev_tx_sent_queue()`; the bug was reproduced by an ordinary stress test on stock multi-core hardware.\nPR:N - Transmission is triggered by unauthenticated inbound packets, so no credentials or privileges of any kind are required; even in the local attacker model, any unprivileged socket send reaches the path with no capability check.\nUI:N - No victim action is needed \u2014 the target transmits automatically in response to attacker-supplied network traffic.\nS:U - The fault and its impact are confined to the kernel of the affected host; no VM, IOMMU, or sandbox boundary is crossed.\nC:N - The `BUG_ON` in `dql_completed()` fires before any accounting underflow or memory access occurs; the skb pointer and sg_len are assigned prior to DMA submission, so there is no out-of-bounds read, no UAF, and no information disclosure.\nI:N - The race corrupts nothing \u2014 the BQL consistency assertion aborts execution before the counters go inconsistent, giving the attacker no write primitive or data modification.\nA:H - `BUG_ON` is hit inside the DMA completion tasklet (softirq context), making it a fatal exception in interrupt context and a full kernel panic; on the embedded/appliance platforms this driver targets that means a hang requiring power-cycle, repeatable at will by an unauthenticated remote flood."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/xilinx/xilinx_axienet_main.c"], "versions": [{"version": "6a91b846af85a24241decd686269e8e038eb13d1", "lessThan": "def3dee25cbd1c9b2ed443c3f6180e952563de77", "status": "affected", "versionType": "git"}, {"version": "6a91b846af85a24241decd686269e8e038eb13d1", "lessThan": "5ccdcdf186aec6b9111845fd37e1757e9b413e2f", "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/xilinx/xilinx_axienet_main.c"], "versions": [{"version": "6.8", "status": "affected"}, {"version": "0", "lessThan": "6.8", "status": "unaffected", "versionType": "semver"}, {"version": "6.11.8", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12", "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": "6.8", "versionEndExcluding": "6.11.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.12"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/def3dee25cbd1c9b2ed443c3f6180e952563de77"}, {"url": "https://git.kernel.org/stable/c/5ccdcdf186aec6b9111845fd37e1757e9b413e2f"}], "title": "net: xilinx: axienet: Enqueue Tx packets in dql before dmaengine starts", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.7, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2024-50297", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-10-01T20:14:04.909182Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-362", "description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T20:17:20.345Z"}}]}}

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It results in following kernel crash\nwhile running iperf stress test:\n\nkernel BUG at lib/dynamic_queue_limits.c:99!\n<snip>\nInternal error: Oops - BUG: 00000000f2000800 [#1] SMP\npc : dql_completed+0x238/0x248\nlr : dql_completed+0x3c/0x248\n\nCall trace:\n dql_completed+0x238/0x248\n axienet_dma_tx_cb+0xa0/0x170\n xilinx_dma_do_tasklet+0xdc/0x290\n tasklet_action_common+0xf8/0x11c\n tasklet_action+0x30/0x3c\n handle_softirqs+0xf8/0x230\n<snip>\n\nStart dmaengine after enqueue in dql fixes the crash."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: xilinx: axienet: Poner en cola los paquetes Tx en dql antes de que se inicie dmaengine Poner en cola los paquetes en dql despu\u00e9s de que se inicie el motor dma provoca una condici\u00f3n de ejecuci\u00f3n. La transferencia Tx comienza una vez que se inicia el motor dma y puede ejecutar dql dequeue al finalizar antes de que se ponga en cola. Esto da como resultado el siguiente bloqueo del kernel mientras se ejecuta la prueba de estr\u00e9s iperf: \u00a1ERROR del kernel en lib/dynamic_queue_limits.c:99! Error interno: Ups - BUG: 00000000f2000800 [#1] SMP pc : dql_completed+0x238/0x248 lr : dql_completed+0x3c/0x248 Rastreo de llamadas: dql_completed+0x238/0x248 axienet_dma_tx_cb+0xa0/0x170 xilinx_dma_do_tasklet+0xdc/0x290 tasklet_action_common+0xf8/0x11c tasklet_action+0x30/0x3c handle_softirqs+0xf8/0x230 Iniciar dmaengine despu\u00e9s de poner en cola en dql corrige el fallo."}], "id": "CVE-2024-50297", "lastModified": "2026-08-04T11:21:43.163", "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"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-50297", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-10-01T20:14:04.909182Z", "version": "2.0.3"}}]}, "published": "2024-11-19T02:16:31.887", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/5ccdcdf186aec6b9111845fd37e1757e9b413e2f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/def3dee25cbd1c9b2ed443c3f6180e952563de77"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-362"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: net: xilinx: axienet: Enqueue Tx packets in dql before dmaengine starts", "id": "2327171", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2327171"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-362", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: xilinx: axienet: Enqueue Tx packets in dql before dmaengine starts\nEnqueue packets in dql after dma engine starts causes race condition.\nTx transfer starts once dma engine is started and may execute dql dequeue\nin completion before it gets queued. It results in following kernel crash\nwhile running iperf stress test:\nkernel BUG at lib/dynamic_queue_limits.c:99!\n<snip>\nInternal error: Oops - BUG: 00000000f2000800 [#1] SMP\npc : dql_completed+0x238/0x248\nlr : dql_completed+0x3c/0x248\nCall trace:\ndql_completed+0x238/0x248\naxienet_dma_tx_cb+0xa0/0x170\nxilinx_dma_do_tasklet+0xdc/0x290\ntasklet_action_common+0xf8/0x11c\ntasklet_action+0x30/0x3c\nhandle_softirqs+0xf8/0x230\n<snip>\nStart dmaengine after enqueue in dql fixes the crash."], "name": "CVE-2024-50297", "package_state": [{"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": "2024-11-19T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-50297\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-50297\nhttps://lore.kernel.org/linux-cve-announce/2024111902-CVE-2024-50297-7693@gregkh/T"], "threat_severity": "Important"}

{}