CVE-2024-50297
Estado: ModificadaMedia (4.7)—
In the Linux kernel, the following vulnerability has been resolved:
net: xilinx: axienet: Enqueue Tx packets in dql before dmaengine starts
Enqueue packets in dql after dma engine starts causes race condition. Tx transfer starts once dma engine is started and may execute dql dequeue in completion before it gets queued. It results in following kernel crash while running iperf stress test:
Start dmaengine after enqueue in dql fixes the crash.
Detalles técnicos trazas, registros y código del informe original
kernel BUG at lib/dynamic_queue_limits.c:99! <snip> Internal error: Oops - BUG: 00000000f2000800 [#1] SMP pc : dql_completed+0x238/0x248 lr : dql_completed+0x3c/0x248 Call trace: 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 <snip>
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 4.7
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.28%
- Percentil entre todas las CVEs puntuadas: 19
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- CWE-362
- CWE-362
Referencias
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: xilinx: axienet: Enqueue Tx packets in dql before dmaengine starts\n\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:\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."
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"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 después de que se inicie el motor dma provoca una condición de ejecución. 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 estrés iperf: ¡ERROR 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 después de poner en cola en dql corrige el fallo."
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