CVE-2025-37859
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: page_pool: avoid infinite loop to schedule delayed worker We noticed the kworker in page_pool_release_retry() was waken up repeatedly and infinitely in production because of the buggy driver causing the inflight less than 0 and warning us in page_pool_inflight()[1]. Since the inflight value goes negative, it means we should not expect the whole page_pool to get back to work normally. This patch mitigates the adverse effect by not rescheduling the kworker when detecting the inflight negative in page_pool_release_retry(). [1] [Mon Feb 10 20:36:11 2025] ------------[ cut here ]------------ [Mon Feb 10 20:36:11 2025] Negative(-51446) inflight packet-pages ... [Mon Feb 10 20:36:11 2025] Call Trace: [Mon Feb 10 20:36:11 2025] page_pool_release_retry+0x23/0x70 [Mon Feb 10 20:36:11 2025] process_one_work+0x1b1/0x370 [Mon Feb 10 20:36:11 2025] worker_thread+0x37/0x3a0 [Mon Feb 10 20:36:11 2025] kthread+0x11a/0x140 [Mon Feb 10 20:36:11 2025] ? process_one_work+0x370/0x370 [Mon Feb 10 20:36:11 2025] ? __kthread_cancel_work+0x40/0x40 [Mon Feb 10 20:36:11 2025] ret_from_fork+0x35/0x40 [Mon Feb 10 20:36:11 2025] ---[ end trace ebffe800f33e7e34 ]--- Note: before this patch, the above calltrace would flood the dmesg due to repeated reschedule of release_dw kworker.
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Analyzed
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-05-09 07:16:06.960000
Last modified
2026-11-05 21:17:56
View original CVE JSON
{
"id": "CVE-2025-37859",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-05-09T07:16:06.960",
"lastModified": "2026-11-05T21:17:56.000",
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{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\npage_pool: avoid infinite loop to schedule delayed worker\n\nWe noticed the kworker in page_pool_release_retry() was waken\nup repeatedly and infinitely in production because of the\nbuggy driver causing the inflight less than 0 and warning\nus in page_pool_inflight()[1].\n\nSince the inflight value goes negative, it means we should\nnot expect the whole page_pool to get back to work normally.\n\nThis patch mitigates the adverse effect by not rescheduling\nthe kworker when detecting the inflight negative in\npage_pool_release_retry().\n\n[1]\n[Mon Feb 10 20:36:11 2025] ------------[ cut here ]------------\n[Mon Feb 10 20:36:11 2025] Negative(-51446) inflight packet-pages\n...\n[Mon Feb 10 20:36:11 2025] Call Trace:\n[Mon Feb 10 20:36:11 2025] page_pool_release_retry+0x23/0x70\n[Mon Feb 10 20:36:11 2025] process_one_work+0x1b1/0x370\n[Mon Feb 10 20:36:11 2025] worker_thread+0x37/0x3a0\n[Mon Feb 10 20:36:11 2025] kthread+0x11a/0x140\n[Mon Feb 10 20:36:11 2025] ? process_one_work+0x370/0x370\n[Mon Feb 10 20:36:11 2025] ? __kthread_cancel_work+0x40/0x40\n[Mon Feb 10 20:36:11 2025] ret_from_fork+0x35/0x40\n[Mon Feb 10 20:36:11 2025] ---[ end trace ebffe800f33e7e34 ]---\nNote: before this patch, the above calltrace would flood the\ndmesg due to repeated reschedule of release_dw kworker."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: page_pool: evitar bucle infinito para programar un trabajador retrasado. Observamos que el kworker en page_pool_release_retry() se reactivaba repetida e infinitamente en producción debido a un controlador defectuoso que causaba un valor inflight menor que 0 y nos advertía en page_pool_inflight()[1]. Dado que el valor inflight es negativo, no debemos esperar que todo el page_pool vuelva a funcionar con normalidad. Este parche mitiga el efecto adverso al no reprogramar el kworker al detectar un valor inflight negativo en page_pool_release_retry(). [1] [Lun 10 Feb 20:36:11 2025] ------------[ cortar aquí ]------------ [Lun 10 Feb 20:36:11 2025] Negativo(-51446) paquetes en vuelo-páginas ... [Lun 10 Feb 20:36:11 2025] Rastreo de llamadas: [Lun 10 Feb 20:36:11 2025] page_pool_release_retry+0x23/0x70 [Lun 10 Feb 20:36:11 2025] process_one_work+0x1b1/0x370 [Lun 10 Feb 20:36:11 2025] workers_thread+0x37/0x3a0 [Lun 10 Feb 20:36:11 2025] kthread+0x11a/0x140 [lun 10 feb 20:36:11 2025] ? process_one_work+0x370/0x370 [lun 10 feb 20:36:11 2025] ? __kthread_cancel_work+0x40/0x40 [lun 10 feb 20:36:11 2025] ret_from_fork+0x35/0x40 [lun 10 feb 20:36:11 2025] ---[ fin del seguimiento ebffe800f33e7e34 ]--- Nota: antes de este parche, el seguimiento de llamadas anterior inundaría dmesg debido a la reprogramación repetida de release_dw kworker."
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