{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-19T22:31:18.569","vulnerabilities":[{"cve":{"id":"CVE-2025-38048","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2025-06-18T10:15:37.450","lastModified":"2025-12-17T18:17:05.530","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio_ring: Fix data race by tagging event_triggered as racy for KCSAN\n\nsyzbot reports a data-race when accessing the event_triggered, here is the\nsimplified stack when the issue occurred:\n\n==================================================================\nBUG: KCSAN: data-race in virtqueue_disable_cb / virtqueue_enable_cb_delayed\n\nwrite to 0xffff8881025bc452 of 1 bytes by task 3288 on cpu 0:\n virtqueue_enable_cb_delayed+0x42/0x3c0 drivers/virtio/virtio_ring.c:2653\n start_xmit+0x230/0x1310 drivers/net/virtio_net.c:3264\n __netdev_start_xmit include/linux/netdevice.h:5151 [inline]\n netdev_start_xmit include/linux/netdevice.h:5160 [inline]\n xmit_one net/core/dev.c:3800 [inline]\n\nread to 0xffff8881025bc452 of 1 bytes by interrupt on cpu 1:\n virtqueue_disable_cb_split drivers/virtio/virtio_ring.c:880 [inline]\n virtqueue_disable_cb+0x92/0x180 drivers/virtio/virtio_ring.c:2566\n skb_xmit_done+0x5f/0x140 drivers/net/virtio_net.c:777\n vring_interrupt+0x161/0x190 drivers/virtio/virtio_ring.c:2715\n __handle_irq_event_percpu+0x95/0x490 kernel/irq/handle.c:158\n handle_irq_event_percpu kernel/irq/handle.c:193 [inline]\n\nvalue changed: 0x01 -> 0x00\n==================================================================\n\nWhen the data race occurs, the function virtqueue_enable_cb_delayed() sets\nevent_triggered to false, and virtqueue_disable_cb_split/packed() reads it\nas false due to the race condition. Since event_triggered is an unreliable\nhint used for optimization, this should only cause the driver temporarily\nsuggest that the device not send an interrupt notification when the event\nindex is used.\n\nFix this KCSAN reported data-race issue by explicitly tagging the access as\ndata_racy."},{"lang":"es","value":"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: virtio_ring: corrige la ejecución de datos etiquetando event_triggered como racy para KCSAN syzbot informa una ejecución de datos al acceder a event_triggered, aquí está la pila simplificada cuando ocurrió el problema: ===================================================================== ERROR: KCSAN: ejecución de datos en virtqueue_disable_cb / virtqueue_enable_cb_delayed escribe en 0xffff8881025bc452 de 1 byte por la tarea 3288 en la CPU 0: virtqueue_enable_cb_delayed+0x42/0x3c0 drivers/virtio/virtio_ring.c:2653 start_xmit+0x230/0x1310 drivers/net/virtio_net.c:3264 __netdev_start_xmit include/linux/netdevice.h:5151 [en línea] netdev_start_xmit include/linux/netdevice.h:5160 [en línea] xmit_one net/core/dev.c:3800 [en línea] lectura a 0xffff8881025bc452 de 1 byte por interrupción en la CPU 1: virtqueue_disable_cb_split drivers/virtio/virtio_ring.c:880 [en línea] virtqueue_disable_cb+0x92/0x180 drivers/virtio/virtio_ring.c:2566 skb_xmit_done+0x5f/0x140 drivers/net/virtio_net.c:777 vring_interrupt+0x161/0x190 drivers/virtio/virtio_ring.c:2715 __handle_irq_event_percpu+0x95/0x490 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] valor cambiado: 0x01 -> 0x00 ===================================================================== Cuando ocurre la ejecución de datos, la función virtqueue_enable_cb_delayed() establece event_triggered en falso, y virtqueue_disable_cb_split/packed() lo lee como falso debido a la condición de ejecución. Dado que event_triggered es una indicación poco fiable utilizada para la optimización, esto solo debería provocar que el controlador sugiera temporalmente que el dispositivo no envíe una notificación de interrupción cuando se utilice el índice de evento. Solucione este problema de ejecución de datos informado por KCSAN etiquetando explícitamente el acceso como data_racy."}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":4.7,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.0,"impactScore":3.6}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-362"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.185","matchCriteriaId":"F1720A61-C869-48BC-BCA5-8AA690C3EEC6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.1.141","matchCriteriaId":"7CEA8241-A858-4009-B4EE-31C62772811A"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.6.93","matchCriteriaId":"50A4A9DE-24AB-4FB4-AACD-85D8EABB0571"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.31","matchCriteriaId":"1AE98841-5774-4B45-A81C-2D188DB7E5C3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.14.9","matchCriteriaId":"A9B72DD1-715C-4101-A720-1C8D70044C06"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*","matchCriteriaId":"8D465631-2980-487A-8E65-40AE2B9F8ED1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*","matchCriteriaId":"4C9D071F-B28E-46EC-AC61-22B913390211"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:*","matchCriteriaId":"13FC0DDE-E513-465E-9E81-515702D49B74"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*","matchCriteriaId":"FA6FEEC2-9F11-4643-8827-749718254FED"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/02d2d6caee3abc9335cfca35f8eb4492173ae6f2","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/2e2f925fe737576df2373931c95e1a2b66efdfef","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/4ed8f0e808b3fcc71c5b8be7902d8738ed595b17","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/b49b5132e4c7307599492aee1cdc6d89f7f2a7da","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/b6d6419548286b2b9d2b90df824d3cab797f6ae8","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/b730cb109633c455ce8a7cd6934986c6a16d88d8","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]}]}}]}