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Fencer Vulns
high 8.4

CVE-2024-26830 json

i40e: Do not allow untrusted VF to remove administratively set MAC

published 2024-04-17 2 y ago modified 2026-08-05 3 mo ago also EUVD-2024-24092

cvss
8.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 14%
public exploits
0
none known

Summary

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

Patch / fix

  • Linux Linux 6.1.79, 6.6.18, 6.7.6, 6.8
  • linux Debian 12 6.1.82-1
  • linux Debian 14, Debian 13 6.7.7-1

debian advisories DEBIAN-CVE-2024-26830

  • linux Ubuntu 20.04 LTS 5.4.0-193.213
  • linux Ubuntu 22.04 LTS 5.15.0-119.129
  • linux-aws Ubuntu 20.04 LTS 5.4.0-1131.141
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1068.74
  • linux-gcp Ubuntu 20.04 LTS 5.4.0-1135.144
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1067.75
  • linux-gke Ubuntu 22.04 LTS 5.15.0-1065.71
  • linux-ibm Ubuntu 20.04 LTS 5.4.0-1078.83

ubuntu advisories UBUNTU-CVE-2024-26830

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel RHEL 9 5.14.0-427.13.1.el9_4
  • rv RHEL 9 5.14.0-427.13.1.el9_4
  • perf RHEL 9 5.14.0-427.13.1.el9_4
  • rtla RHEL 9 5.14.0-427.13.1.el9_4
  • bpftool RHEL 9 7.3.0-427.13.1.el9_4
  • libperf RHEL 9 5.14.0-427.13.1.el9_4
  • kernel-rt RHEL 9 5.14.0-427.13.1.el9_4
  • kernel-64k RHEL 9 5.14.0-427.13.1.el9_4

red hat advisories RHSA-2025:0063RHSA-2025:0064RHSA-2024:10941RHSA-2024:8161RHSA-2024:2394RHSA-2024:3138

  • kernel-syms SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-122.225.1
  • kernel-source SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-122.225.1
  • kernel-default SLES for SAP 12 SP5, SLES 12 SP5, SLE Workstation Extension 12 SP5 +2 more 4.12.14-122.225.1
  • kernel-obs-build SLE Software Development Kit 12 SP5 4.12.14-122.225.1
  • kernel-azure SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-16.194.1
  • kernel-syms-azure SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-16.194.1
  • kernel-source-azure SLES for SAP 12 SP5, SLES 12 SP5 4.12.14-16.194.1
  • kernel-rt SLE Real Time 12 SP5 4.12.14-10.197.1

suse advisories SUSE-SU-2024:2940-1SUSE-SU-2024:2901-1SUSE-SU-2024:2892-1SUSE-SU-2024:1663-1SUSE-SU-2024:1659-1SUSE-SU-2024:1644-1

  • kernel Rocky Linux 8 4.18.0-553.123.1.el8_10.cloud.0.1

rocky linux advisories RXSA-2024:3138

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-26830 updated cvss 4.4

kernel: i40e: Do not allow untrusted VF to remove administratively set MAC

  • Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +6 more
    affected: no fix available
  • Red Hat Enterprise Linux 9 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +12 more
    affected: no fix planned “Will not fix”
  • Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-debuginfo-common-x86_64 4.18.0-477.83.1.el8_8, kernel-debuginfo-common-aarch64 4.18.0-477.83.1.el8_8, kernel-debuginfo-common-ppc64le 4.18.0-477.83.1.el8_8
    fixed: vendor fix RHSA-2024:10941
  • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-debuginfo-common-s390x 5.14.0-284.99.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.99.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.99.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.99.1.el9_2
    fixed: vendor fix RHSA-2025:0063
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-427.13.1.el9_4, perf 5.14.0-427.13.1.el9_4, rtla 5.14.0-427.13.1.el9_4, kernel-devel-matched 5.14.0-427.13.1.el9_4, kernel-64k-devel-matched 5.14.0-427.13.1.el9_4, kernel-debug-devel-matched 5.14.0-427.13.1.el9_4, +6 more
    fixed: vendor fix RHSA-2024:2394
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) perf 5.14.0-284.99.1.el9_2, rtla 5.14.0-284.99.1.el9_2, kernel-devel-matched 5.14.0-284.99.1.el9_2, kernel-64k-devel-matched 5.14.0-284.99.1.el9_2, kernel-debug-devel-matched 5.14.0-284.99.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.99.1.el9_2, +5 more
    fixed: vendor fix RHSA-2025:0063
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-553.el8_10, kernel 4.18.0-553.el8_10, bpftool 4.18.0-553.el8_10, kernel-core 4.18.0-553.el8_10, kernel-tools 4.18.0-553.el8_10, python3-perf 4.18.0-553.el8_10, +15 more
    fixed: vendor fix RHSA-2024:3138
show 10 more
  • Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.3.0-427.13.1.el9_4, kernel 5.14.0-427.13.1.el9_4, kernel-64k 5.14.0-427.13.1.el9_4, kernel-core 5.14.0-427.13.1.el9_4, kernel-tools 5.14.0-427.13.1.el9_4, python3-perf 5.14.0-427.13.1.el9_4, +28 more
    fixed: vendor fix RHSA-2024:2394
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) perf 4.18.0-372.126.1.el8_6, kernel 4.18.0-372.126.1.el8_6, bpftool 4.18.0-372.126.1.el8_6, kernel-core 4.18.0-372.126.1.el8_6, kernel-tools 4.18.0-372.126.1.el8_6, python3-perf 4.18.0-372.126.1.el8_6, +8 more Red Hat Enterprise Linux BaseOS E4S (v.8.6) perf 4.18.0-372.126.1.el8_6, kernel 4.18.0-372.126.1.el8_6, bpftool 4.18.0-372.126.1.el8_6, kernel-core 4.18.0-372.126.1.el8_6, kernel-tools 4.18.0-372.126.1.el8_6, python3-perf 4.18.0-372.126.1.el8_6, +15 more
    fixed: vendor fix RHSA-2024:8161
  • Red Hat Enterprise Linux BaseOS EUS (v.8.8) perf 4.18.0-477.83.1.el8_8, kernel 4.18.0-477.83.1.el8_8, bpftool 4.18.0-477.83.1.el8_8, kernel-core 4.18.0-477.83.1.el8_8, kernel-tools 4.18.0-477.83.1.el8_8, python3-perf 4.18.0-477.83.1.el8_8, +15 more
    fixed: vendor fix RHSA-2024:10941
  • Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool 7.0.0-284.99.1.el9_2, kernel 5.14.0-284.99.1.el9_2, kernel-64k 5.14.0-284.99.1.el9_2, kernel-core 5.14.0-284.99.1.el9_2, kernel-tools 5.14.0-284.99.1.el9_2, python3-perf 5.14.0-284.99.1.el9_2, +28 more
    fixed: vendor fix RHSA-2025:0063
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6) perf 4.18.0-372.126.1.el8_6, kernel 4.18.0-372.126.1.el8_6, bpftool 4.18.0-372.126.1.el8_6, kernel-core 4.18.0-372.126.1.el8_6, kernel-tools 4.18.0-372.126.1.el8_6, python3-perf 4.18.0-372.126.1.el8_6, +8 more
    fixed: vendor fix RHSA-2024:8161
  • Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-553.el8_10, kernel-debuginfo-common-aarch64 4.18.0-553.el8_10, kernel-debuginfo-common-ppc64le 4.18.0-553.el8_10
    fixed: vendor fix RHSA-2024:3138
  • Red Hat Enterprise Linux CRB (v. 9) libperf 5.14.0-427.13.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.13.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.13.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.13.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.13.1.el9_4 Red Hat Enterprise Linux NFV (v. 9) kernel-rt 5.14.0-427.13.1.el9_4, kernel-rt-kvm 5.14.0-427.13.1.el9_4, kernel-rt-core 5.14.0-427.13.1.el9_4, kernel-rt-modules 5.14.0-427.13.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.13.1.el9_4, kernel-rt-debug-core 5.14.0-427.13.1.el9_4, +6 more
    fixed: vendor fix RHSA-2024:2394
  • Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt 5.14.0-284.99.1.rt14.384.el9_2, kernel-rt-core 5.14.0-284.99.1.rt14.384.el9_2, kernel-rt-modules 5.14.0-284.99.1.rt14.384.el9_2, kernel-rt-debug-core 5.14.0-284.99.1.rt14.384.el9_2, kernel-rt-modules-core 5.14.0-284.99.1.rt14.384.el9_2, kernel-rt-debug-modules 5.14.0-284.99.1.rt14.384.el9_2, +4 more Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt 5.14.0-284.99.1.rt14.384.el9_2, kernel-rt-kvm 5.14.0-284.99.1.rt14.384.el9_2, kernel-rt-core 5.14.0-284.99.1.rt14.384.el9_2, kernel-rt-modules 5.14.0-284.99.1.rt14.384.el9_2, kernel-rt-debug-kvm 5.14.0-284.99.1.rt14.384.el9_2, kernel-rt-debug-core 5.14.0-284.99.1.rt14.384.el9_2, +6 more
    fixed: vendor fix RHSA-2025:0064
  • Red Hat Enterprise Linux RT (v. 9) kernel-rt 5.14.0-427.13.1.el9_4, kernel-rt-core 5.14.0-427.13.1.el9_4, kernel-rt-modules 5.14.0-427.13.1.el9_4, kernel-rt-debug-core 5.14.0-427.13.1.el9_4, kernel-rt-modules-core 5.14.0-427.13.1.el9_4, kernel-rt-debug-modules 5.14.0-427.13.1.el9_4, +4 more
    fixed: vendor fix RHSA-2024:2394
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-doc 5.14.0-284.99.1.el9_2
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.23% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.4 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H
NVD 3.1 6.3 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H

Affected products

  • Linux Linux

Classification

Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.