CVE-2022-49227
Estado: AnalizadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
igc: avoid kernel warning when changing RX ring parameters
Calling ethtool changing the RX ring parameters like this:
on igc triggers kernel warnings like this:
igc_ethtool_set_ringparam() copies the igc_ring structure but neglects to reset the xdp_rxq_info member before calling igc_setup_rx_resources(). This in turn calls xdp_rxq_info_reg() with an already registered xdp_rxq_info.
Make sure to unregister the xdp_rxq_info structure first in igc_setup_rx_resources.
Detalles técnicos trazas, registros y código del informe original
$ ethtool -G eth0 rx 1024 [ 225.198467] ------------[ cut here ]------------ [ 225.198473] Missing unregister, handled but fix driver [ 225.198485] WARNING: CPU: 7 PID: 959 at net/core/xdp.c:168 xdp_rxq_info_reg+0x79/0xd0 [...] [ 225.198601] Call Trace: [ 225.198604] <TASK> [ 225.198609] igc_setup_rx_resources+0x3f/0xe0 [igc] [ 225.198617] igc_ethtool_set_ringparam+0x30e/0x450 [igc] [ 225.198626] ethnl_set_rings+0x18a/0x250 [ 225.198631] genl_family_rcv_msg_doit+0xca/0x110 [ 225.198637] genl_rcv_msg+0xce/0x1c0 [ 225.198640] ? rings_prepare_data+0x60/0x60 [ 225.198644] ? genl_get_cmd+0xd0/0xd0 [ 225.198647] netlink_rcv_skb+0x4e/0xf0 [ 225.198652] genl_rcv+0x24/0x40 [ 225.198655] netlink_unicast+0x20e/0x330 [ 225.198659] netlink_sendmsg+0x23f/0x480 [ 225.198663] sock_sendmsg+0x5b/0x60 [ 225.198667] __sys_sendto+0xf0/0x160 [ 225.198671] ? handle_mm_fault+0xb2/0x280 [ 225.198676] ? do_user_addr_fault+0x1eb/0x690 [ 225.198680] __x64_sys_sendto+0x20/0x30 [ 225.198683] do_syscall_64+0x38/0x90 [ 225.198687] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 225.198693] RIP: 0033:0x7f7ae38ac3aa
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: 0.27%
- Percentil entre todas las CVEs puntuadas: 17
- 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
- NVD-CWE-noinfo
Referencias
JSON original (NVD)
Mostrar
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"id": "CVE-2022-49227",
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"source": "nvd@nist.gov",
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"attackVector": "LOCAL",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "NONE"
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"published": "2025-02-26T07:00:59.747",
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"descriptions": [
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nigc: avoid kernel warning when changing RX ring parameters\n\nCalling ethtool changing the RX ring parameters like this:\n\n $ ethtool -G eth0 rx 1024\n\non igc triggers kernel warnings like this:\n\n[ 225.198467] ------------[ cut here ]------------\n[ 225.198473] Missing unregister, handled but fix driver\n[ 225.198485] WARNING: CPU: 7 PID: 959 at net/core/xdp.c:168\nxdp_rxq_info_reg+0x79/0xd0\n[...]\n[ 225.198601] Call Trace:\n[ 225.198604] <TASK>\n[ 225.198609] igc_setup_rx_resources+0x3f/0xe0 [igc]\n[ 225.198617] igc_ethtool_set_ringparam+0x30e/0x450 [igc]\n[ 225.198626] ethnl_set_rings+0x18a/0x250\n[ 225.198631] genl_family_rcv_msg_doit+0xca/0x110\n[ 225.198637] genl_rcv_msg+0xce/0x1c0\n[ 225.198640] ? rings_prepare_data+0x60/0x60\n[ 225.198644] ? genl_get_cmd+0xd0/0xd0\n[ 225.198647] netlink_rcv_skb+0x4e/0xf0\n[ 225.198652] genl_rcv+0x24/0x40\n[ 225.198655] netlink_unicast+0x20e/0x330\n[ 225.198659] netlink_sendmsg+0x23f/0x480\n[ 225.198663] sock_sendmsg+0x5b/0x60\n[ 225.198667] __sys_sendto+0xf0/0x160\n[ 225.198671] ? handle_mm_fault+0xb2/0x280\n[ 225.198676] ? do_user_addr_fault+0x1eb/0x690\n[ 225.198680] __x64_sys_sendto+0x20/0x30\n[ 225.198683] do_syscall_64+0x38/0x90\n[ 225.198687] entry_SYSCALL_64_after_hwframe+0x44/0xae\n[ 225.198693] RIP: 0033:0x7f7ae38ac3aa\n\nigc_ethtool_set_ringparam() copies the igc_ring structure but neglects to\nreset the xdp_rxq_info member before calling igc_setup_rx_resources().\nThis in turn calls xdp_rxq_info_reg() with an already registered xdp_rxq_info.\n\nMake sure to unregister the xdp_rxq_info structure first in\nigc_setup_rx_resources."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: igc: evitar advertencia del kernel al cambiar los parámetros del anillo RX Llamar a ethtool cambiando los parámetros del anillo RX de esta manera: $ ethtool -G eth0 rx 1024 en igc activa advertencias del kernel como esta: [ 225.198467] ------------[ cortar aquí ]------------ [ 225.198473] Falta anulación del registro, controlador manejado pero corregido [ 225.198485] ADVERTENCIA: CPU: 7 PID: 959 en net/core/xdp.c:168 xdp_rxq_info_reg+0x79/0xd0 [...] [ 225.198601] Seguimiento de llamada: [ 225.198604] [ 225.198609] igc_setup_rx_resources+0x3f/0xe0 [igc] [ 225.198617] igc_ethtool_set_ringparam+0x30e/0x450 [igc] [ 225.198626] ethnl_set_rings+0x18a/0x250 [ 225.198631] genl_family_rcv_msg_doit+0xca/0x110 [ 225.198637] genl_rcv_msg+0xce/0x1c0 [ 225.198640] ? rings_prepare_data+0x60/0x60 [ 225.198644] ? genl_get_cmd+0xd0/0xd0 [ 225.198647] netlink_rcv_skb+0x4e/0xf0 [ 225.198652] genl_rcv+0x24/0x40 [ 225.198655] netlink_unicast+0x20e/0x330 [ 225.198659] netlink_sendmsg+0x23f/0x480 [ 225.198663] sock_sendmsg+0x5b/0x60 [ 225.198667] __sys_sendto+0xf0/0x160 [ 225.198671] ? handle_mm_fault+0xb2/0x280 [ 225.198676] ? do_user_addr_fault+0x1eb/0x690 [ 225.198680] __x64_sys_sendto+0x20/0x30 [ 225.198683] do_syscall_64+0x38/0x90 [ 225.198687] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 225.198693] RIP: 0033:0x7f7ae38ac3aa igc_ethtool_set_ringparam() copia la estructura igc_ring pero no restablece el miembro xdp_rxq_info antes de llamar a igc_setup_rx_resources(). Esto, a su vez, llama a xdp_rxq_info_reg() con un xdp_rxq_info ya registrado. Asegúrese de anular el registro de la estructura xdp_rxq_info primero en igc_setup_rx_resources."
}
],
"lastModified": "2026-06-17T05:17:26.690",
"configurations": [
{
"nodes": [
{
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