ghsa-wvxq-2p8c-hj2m
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
i40e: Do not allow untrusted VF to remove administratively set MAC
Currently when PF administratively sets VF's MAC address and the VF is put down (VF tries to delete all MACs) then the MAC is removed from MAC filters and primary VF MAC is zeroed.
Do not allow untrusted VF to remove primary MAC when it was set administratively by PF.
Reproducer: 1) Create VF 2) Set VF interface up 3) Administratively set the VF's MAC 4) Put VF interface down
[root@host ~]# echo 1 > /sys/class/net/enp2s0f0/device/sriov_numvfs
[root@host ~]# ip link set enp2s0f0v0 up
[root@host ~]# ip link set enp2s0f0 vf 0 mac fe:6c:b5:da:c7:7d
[root@host ~]# ip link show enp2s0f0
23: enp2s0f0:
{
"affected": [],
"aliases": [
"CVE-2024-26830"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-17T10:15:09Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ni40e: Do not allow untrusted VF to remove administratively set MAC\n\nCurrently when PF administratively sets VF\u0027s MAC address and the VF\nis put down (VF tries to delete all MACs) then the MAC is removed\nfrom MAC filters and primary VF MAC is zeroed.\n\nDo not allow untrusted VF to remove primary MAC when it was set\nadministratively by PF.\n\nReproducer:\n1) Create VF\n2) Set VF interface up\n3) Administratively set the VF\u0027s MAC\n4) Put VF interface down\n\n[root@host ~]# echo 1 \u003e /sys/class/net/enp2s0f0/device/sriov_numvfs\n[root@host ~]# ip link set enp2s0f0v0 up\n[root@host ~]# ip link set enp2s0f0 vf 0 mac fe:6c:b5:da:c7:7d\n[root@host ~]# ip link show enp2s0f0\n23: enp2s0f0: \u003cBROADCAST,MULTICAST,UP,LOWER_UP\u003e mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000\n link/ether 3c:ec:ef:b7:dd:04 brd ff:ff:ff:ff:ff:ff\n vf 0 link/ether fe:6c:b5:da:c7:7d brd ff:ff:ff:ff:ff:ff, spoof checking on, link-state auto, trust off\n[root@host ~]# ip link set enp2s0f0v0 down\n[root@host ~]# ip link show enp2s0f0\n23: enp2s0f0: \u003cBROADCAST,MULTICAST,UP,LOWER_UP\u003e mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000\n link/ether 3c:ec:ef:b7:dd:04 brd ff:ff:ff:ff:ff:ff\n vf 0 link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff, spoof checking on, link-state auto, trust off",
"id": "GHSA-wvxq-2p8c-hj2m",
"modified": "2024-04-17T12:32:03Z",
"published": "2024-04-17T12:32:03Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26830"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1c981792e4ccbc134b468797acdd7781959e6893"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/73d9629e1c8c1982f13688c4d1019c3994647ccc"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/be147926140ac48022c9605d7ab0a67387e4b404"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d250a81ba813a93563be68072c563aa1e346346d"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
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