CVE-2024-26830i40e: Do not allow untrusted VF to remove administratively set MAC
- 8.4HighCVSS base score
- 0.23%Exploitation in 30 daysEPSS · top 86% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000 link/ether 3c:ec:ef:b7:dd:04 brd ff:ff:ff:ff:ff:ff 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 [root@host ~]# ip link set enp2s0f0v0 down [root@host ~]# ip link show enp2s0f0 23: enp2s0f0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000 link/ether 3c:ec:ef:b7:dd:04 brd ff:ff:ff:ff:ff:ff 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
Timeline
ID reserved
By Linux
- 58 days later
· 58 days later
Published
- 2 years later
· 2 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High8.4 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H |
| NVDNVD · Modified | 3.1 | Medium6.3 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.23% · top 86% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.4.
Affected products
- affected 700bbf6c1f9e4ab055528d5ab4ac5815fe4a6c1b – < 1c981792e4ccbc134b468797acdd7781959e6893
- affected 700bbf6c1f9e4ab055528d5ab4ac5815fe4a6c1b – < be147926140ac48022c9605d7ab0a67387e4b404
- affected 700bbf6c1f9e4ab055528d5ab4ac5815fe4a6c1b – < d250a81ba813a93563be68072c563aa1e346346d
- affected 700bbf6c1f9e4ab055528d5ab4ac5815fe4a6c1b – < 73d9629e1c8c1982f13688c4d1019c3994647ccc
- affected 3.14
- unaffected < 3.14
- unaffected 6.1.79 – ≤ 6.1.*
- unaffected 6.6.18 – ≤ 6.6.*
- unaffected 6.7.6 – ≤ 6.7.*
- unaffected 6.8 – ≤ *
References
References4
- https://git.kernel.org/stable/c/1c981792e4ccbc134b468797acdd7781959e6893 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/be147926140ac48022c9605d7ab0a67387e4b404 (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/d250a81ba813a93563be68072c563aa1e346346d (opens in a new tab)x_transferred
- https://git.kernel.org/stable/c/73d9629e1c8c1982f13688c4d1019c3994647ccc (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2024-24092 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2024-26830)Record last updated .