CVE-2024-26830

Medium

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

Package Linux Kernel
Published 2024-04-17
Last modified 2025-04-02
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

6.3

out of 10
Medium
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H

Affected versions

Linux kernel versions 3.14 and later are affected. Fixed in 6.1.79, 6.6.18, 6.7.6, 6.8 and their respective stable series.

Affected from
≥ 3.14
Fixed in
✓ 6.1.79 6.1.x ✓ 6.6.18 6.6.x ✓ 6.7.6 6.7.x ✓ 6.8

References

4 total

Frequently asked questions

  • What is CVE-2024-26830?

    CVE-2024-26830 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.3 out of 10 . It affects Linux kernel versions from 3.14 onward and has been patched in 6.1.79, 6.6.18, 6.7.6 and others. CVE-2024-26830 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2024-26830?

    CVE-2024-26830 has a CVSS score of 6.3 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H .

  • Is there a patch available for CVE-2024-26830?

    Yes. CVE-2024-26830 has been patched. Fixed versions include 6.1.79, 6.6.18, 6.7.6 and others. If you are running Linux kernel 3.14 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2024-26830 actively exploited?

    No. CVE-2024-26830 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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