CVE-2025-38417
Estado: AnalizadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
ice: fix eswitch code memory leak in reset scenario
Add simple eswitch mode checker in attaching VF procedure and allocate required port representor memory structures only in switchdev mode. The reset flows triggers VF (if present) detach/attach procedure. It might involve VF port representor(s) re-creation if the device is configured is switchdev mode (not legacy one). The memory was blindly allocated in current implementation, regardless of the mode and not freed if in legacy mode.
Testing hints (ethX is PF netdev): - create at least one VF echo 1 > /sys/class/net/ethX/device/sriov_numvfs - trigger the reset echo 1 > /sys/class/net/ethX/device/reset
Detalles técnicos trazas, registros y código del informe original
Kmemeleak trace:
unreferenced object (percpu) 0x7e3bce5b888458 (size 40):
comm "bash", pid 1784, jiffies 4295743894
hex dump (first 32 bytes on cpu 45):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace (crc 0):
pcpu_alloc_noprof+0x4c4/0x7c0
ice_repr_create+0x66/0x130 [ice]
ice_repr_create_vf+0x22/0x70 [ice]
ice_eswitch_attach_vf+0x1b/0xa0 [ice]
ice_reset_all_vfs+0x1dd/0x2f0 [ice]
ice_pci_err_resume+0x3b/0xb0 [ice]
pci_reset_function+0x8f/0x120
reset_store+0x56/0xa0
kernfs_fop_write_iter+0x120/0x1b0
vfs_write+0x31c/0x430
ksys_write+0x61/0xd0
do_syscall_64+0x5b/0x180
entry_SYSCALL_64_after_hwframe+0x76/0x7eCVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.17%
- Percentil entre todas las CVEs puntuadas: 5
- Fecha de la puntuación: 5/10/2026
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-401
Referencias
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: fix eswitch code memory leak in reset scenario\n\nAdd simple eswitch mode checker in attaching VF procedure and allocate\nrequired port representor memory structures only in switchdev mode.\nThe reset flows triggers VF (if present) detach/attach procedure.\nIt might involve VF port representor(s) re-creation if the device is\nconfigured is switchdev mode (not legacy one).\nThe memory was blindly allocated in current implementation,\nregardless of the mode and not freed if in legacy mode.\n\nKmemeleak trace:\nunreferenced object (percpu) 0x7e3bce5b888458 (size 40):\n comm \"bash\", pid 1784, jiffies 4295743894\n hex dump (first 32 bytes on cpu 45):\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n backtrace (crc 0):\n pcpu_alloc_noprof+0x4c4/0x7c0\n ice_repr_create+0x66/0x130 [ice]\n ice_repr_create_vf+0x22/0x70 [ice]\n ice_eswitch_attach_vf+0x1b/0xa0 [ice]\n ice_reset_all_vfs+0x1dd/0x2f0 [ice]\n ice_pci_err_resume+0x3b/0xb0 [ice]\n pci_reset_function+0x8f/0x120\n reset_store+0x56/0xa0\n kernfs_fop_write_iter+0x120/0x1b0\n vfs_write+0x31c/0x430\n ksys_write+0x61/0xd0\n do_syscall_64+0x5b/0x180\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nTesting hints (ethX is PF netdev):\n- create at least one VF\n echo 1 > /sys/class/net/ethX/device/sriov_numvfs\n- trigger the reset\n echo 1 > /sys/class/net/ethX/device/reset"
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ice: se corrige la fuga de memoria del código de eswitch en el escenario de reinicio. Se añade un verificador simple del modo eswitch al procedimiento de conexión de VF y se asignan las estructuras de memoria requeridas para el representante de puerto solo en el modo switchdev. Los flujos de reinicio activan el procedimiento de desconexión/conexión de VF (si está presente). Podría implicar la recreación del/de los representante(s) de puerto de VF si el dispositivo está configurado en modo switchdev (no en el modo heredado). La memoria se asignaba ciegamente en la implementación actual, independientemente del modo, y no se liberaba en el modo heredado. Rastreo de Kmemeleak: objeto sin referencia (percpu) 0x7e3bce5b888458 (size 40): comm \"bash\", pid 1784, jiffies 4295743894 hex dump (first 32 bytes on cpu 45): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 0): pcpu_alloc_noprof+0x4c4/0x7c0 ice_repr_create+0x66/0x130 [ice] ice_repr_create_vf+0x22/0x70 [ice] ice_eswitch_attach_vf+0x1b/0xa0 [ice] ice_reset_all_vfs+0x1dd/0x2f0 [ice] ice_pci_err_resume+0x3b/0xb0 [ice] pci_reset_function+0x8f/0x120 reset_store+0x56/0xa0 kernfs_fop_write_iter+0x120/0x1b0 vfs_write+0x31c/0x430 ksys_write+0x61/0xd0 do_syscall_64+0x5b/0x180 entry_SYSCALL_64_after_hwframe+0x76/0x7e Testing hints (ethX is PF netdev): - create at least one VF echo 1 > /sys/class/net/ethX/device/sriov_numvfs - trigger the reset echo 1 > /sys/class/net/ethX/device/reset"
}
],
"lastModified": "2026-06-17T09:16:49.103",
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