CVE-2025-39875
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: igb: Fix NULL pointer dereference in ethtool loopback test The igb driver currently causes a NULL pointer dereference when executing the ethtool loopback test. This occurs because there is no associated q_vector for the test ring when it is set up, as interrupts are typically not added to the test rings. Since commit 5ef44b3cb43b removed the napi_id assignment in __xdp_rxq_info_reg(), there is no longer a need to pass a napi_id to it. Therefore, simply use 0 as the last parameter.
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-09-23 06:15:46.950000
Last modified
2026-10-19 21:10:00.160000
View original CVE JSON
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"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-09-23T06:15:46.950",
"lastModified": "2026-10-19T21:10:00.160",
"vulnStatus": "Modified",
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{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nigb: Fix NULL pointer dereference in ethtool loopback test\n\nThe igb driver currently causes a NULL pointer dereference when executing\nthe ethtool loopback test. This occurs because there is no associated\nq_vector for the test ring when it is set up, as interrupts are typically\nnot added to the test rings.\n\nSince commit 5ef44b3cb43b removed the napi_id assignment in\n__xdp_rxq_info_reg(), there is no longer a need to pass a napi_id to it.\nTherefore, simply use 0 as the last parameter."
},
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"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nigb: Corrección de desreferencia de puntero NULL en la prueba de bucle invertido de ethtool\n\nEl controlador igb actualmente provoca una desreferencia de puntero NULL al ejecutar la prueba de bucle invertido de ethtool. Esto ocurre porque no hay un q_vector asociado para el anillo de prueba cuando se configura, ya que las interrupciones normalmente no se añaden a los anillos de prueba.\n\nDesde que el commit 5ef44b3cb43b eliminó la asignación de napi_id en __xdp_rxq_info_reg(), ya no es necesario pasar un napi_id. Por lo tanto, simplemente use 0 como último parámetro."
}
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