CVE-2025-22032
Estado: ModificadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
wifi: mt76: mt7921: fix kernel panic due to null pointer dereference
Address a kernel panic caused by a null pointer dereference in the `mt792x_rx_get_wcid` function. The issue arises because the `deflink` structure is not properly initialized with the `sta` context. This patch ensures that the `deflink` structure is correctly linked to the `sta` context, preventing the null pointer dereference.
Detalles técnicos trazas, registros y código del informe original
BUG: kernel NULL pointer dereference, address: 0000000000000400 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 0 UID: 0 PID: 470 Comm: mt76-usb-rx phy Not tainted 6.12.13-gentoo-dist #1 Hardware name: /AMD HUDSON-M1, BIOS 4.6.4 11/15/2011 RIP: 0010:mt792x_rx_get_wcid+0x48/0x140 [mt792x_lib] RSP: 0018:ffffa147c055fd98 EFLAGS: 00010202 RAX: 0000000000000000 RBX: ffff8e9ecb652000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8e9ecb652000 RBP: 0000000000000685 R08: ffff8e9ec6570000 R09: 0000000000000000 R10: ffff8e9ecd2ca000 R11: ffff8e9f22a217c0 R12: 0000000038010119 R13: 0000000080843801 R14: ffff8e9ec6570000 R15: ffff8e9ecb652000 FS: 0000000000000000(0000) GS:ffff8e9f22a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000400 CR3: 000000000d2ea000 CR4: 00000000000006f0 Call Trace: <TASK> ? __die_body.cold+0x19/0x27 ? page_fault_oops+0x15a/0x2f0 ? search_module_extables+0x19/0x60 ? search_bpf_extables+0x5f/0x80 ? exc_page_fault+0x7e/0x180 ? asm_exc_page_fault+0x26/0x30 ? mt792x_rx_get_wcid+0x48/0x140 [mt792x_lib] mt7921_queue_rx_skb+0x1c6/0xaa0 [mt7921_common] mt76u_alloc_queues+0x784/0x810 [mt76_usb] ? __pfx___mt76_worker_fn+0x10/0x10 [mt76] __mt76_worker_fn+0x4f/0x80 [mt76] kthread+0xd2/0x100 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x34/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1a/0x30 </TASK> ---[ end trace 0000000000000000 ]---
CVSS
- 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: 0.20%
- Percentil entre todas las CVEs puntuadas: 9
- 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-476
- CWE-476
Referencias
JSON original (NVD)
Mostrar
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"published": "2025-04-16T15:15:55.823",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7921: fix kernel panic due to null pointer dereference\n\nAddress a kernel panic caused by a null pointer dereference in the\n`mt792x_rx_get_wcid` function. The issue arises because the `deflink` structure\nis not properly initialized with the `sta` context. This patch ensures that the\n`deflink` structure is correctly linked to the `sta` context, preventing the\nnull pointer dereference.\n\n BUG: kernel NULL pointer dereference, address: 0000000000000400\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 0 P4D 0\n Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI\n CPU: 0 UID: 0 PID: 470 Comm: mt76-usb-rx phy Not tainted 6.12.13-gentoo-dist #1\n Hardware name: /AMD HUDSON-M1, BIOS 4.6.4 11/15/2011\n RIP: 0010:mt792x_rx_get_wcid+0x48/0x140 [mt792x_lib]\n RSP: 0018:ffffa147c055fd98 EFLAGS: 00010202\n RAX: 0000000000000000 RBX: ffff8e9ecb652000 RCX: 0000000000000000\n RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8e9ecb652000\n RBP: 0000000000000685 R08: ffff8e9ec6570000 R09: 0000000000000000\n R10: ffff8e9ecd2ca000 R11: ffff8e9f22a217c0 R12: 0000000038010119\n R13: 0000000080843801 R14: ffff8e9ec6570000 R15: ffff8e9ecb652000\n FS: 0000000000000000(0000) GS:ffff8e9f22a00000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 0000000000000400 CR3: 000000000d2ea000 CR4: 00000000000006f0\n Call Trace:\n <TASK>\n ? __die_body.cold+0x19/0x27\n ? page_fault_oops+0x15a/0x2f0\n ? search_module_extables+0x19/0x60\n ? search_bpf_extables+0x5f/0x80\n ? exc_page_fault+0x7e/0x180\n ? asm_exc_page_fault+0x26/0x30\n ? mt792x_rx_get_wcid+0x48/0x140 [mt792x_lib]\n mt7921_queue_rx_skb+0x1c6/0xaa0 [mt7921_common]\n mt76u_alloc_queues+0x784/0x810 [mt76_usb]\n ? __pfx___mt76_worker_fn+0x10/0x10 [mt76]\n __mt76_worker_fn+0x4f/0x80 [mt76]\n kthread+0xd2/0x100\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x34/0x50\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1a/0x30\n </TASK>\n ---[ end trace 0000000000000000 ]---"
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: mt76: mt7921: corrección de pánico del kernel debido a la desreferencia de puntero nulo. Se solucionó un pánico del kernel causado por una desreferencia de puntero nulo en la función `mt792x_rx_get_wcid`. El problema surge porque la estructura `deflink` no se inicializa correctamente con el contexto `sta`. Este parche garantiza que la estructura `deflink` esté correctamente vinculada al contexto `sta`, lo que evita la desreferencia de puntero nulo. ERROR: desreferencia de puntero NULL del kernel, dirección: 0000000000000400 #PF: acceso de lectura del supervisor en modo kernel #PF: error_code(0x0000) - página no presente PGD 0 P4D 0 Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 0 UID: 0 PID: 470 Comm: mt76-usb-rx phy No contaminado 6.12.13-gentoo-dist #1 Nombre del hardware: /AMD HUDSON-M1, BIOS 4.6.4 15/11/2011 RIP: 0010:mt792x_rx_get_wcid+0x48/0x140 [mt792x_lib] RSP: 0018:ffffa147c055fd98 EFLAGS: 00010202 RAX: 0000000000000000 RBX: ffff8e9ecb652000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8e9ecb652000 RBP: 0000000000000685 R08: ffff8e9ec6570000 R09: 000000000000000 R10: ffff8e9ecd2ca000 R11: ffff8e9f22a217c0 R12: 0000000038010119 R13: 0000000080843801 R14: ffff8e9ec6570000 R15: ffff8e9ecb652000 FS: 0000000000000000(0000) GS:ffff8e9f22a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000000400 CR3: 000000000d2ea000 CR4: 00000000000006f0 Seguimiento de llamadas: ? __die_body.cold+0x19/0x27 ? page_fault_oops+0x15a/0x2f0 ? search_module_extables+0x19/0x60 ? search_bpf_extables+0x5f/0x80 ? exc_page_fault+0x7e/0x180 ? asm_exc_page_fault+0x26/0x30 ? mt792x_rx_get_wcid+0x48/0x140 [mt792x_lib] mt7921_queue_rx_skb+0x1c6/0xaa0 [mt7921_common] mt76u_alloc_queues+0x784/0x810 [mt76_usb] ? __pfx___mt76_worker_fn+0x10/0x10 [mt76] __mt76_worker_fn+0x4f/0x80 [mt76] kthread+0xd2/0x100 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x34/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1a/0x30 ---[ fin de seguimiento 0000000000000000 ]---"
}
],
"lastModified": "2026-06-17T08:44:53.420",
"configurations": [
{
"nodes": [
{
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