GHSA-VV5G-R8MG-XVC2
Vulnerability from github – Published: 2025-10-21 12:31 – Updated: 2025-10-21 12:31In 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:
$ ethtool -G eth0 rx 1024
on igc triggers kernel warnings like this:
[ 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] [ 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() 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.
{
"affected": [],
"aliases": [
"CVE-2022-49227"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-26T07:00:59Z",
"severity": "MODERATE"
},
"details": "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] \u003cTASK\u003e\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.",
"id": "GHSA-vv5g-r8mg-xvc2",
"modified": "2025-10-21T12:31:23Z",
"published": "2025-10-21T12:31:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49227"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3ddb49af08094ebee250b461172ee7b8e27a35d3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/453307b569a0d41bddd07f26bf41b784cd82a4c9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/65aebcf1e05bd97d2e7ffcdff36efea1757c9450"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ab8c107470d12e7ef99030bf0911a10cdef62d16"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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