CVE-2026-64225: octeontx2-af: CGX: add bounds check to cgx_speed_mbps index

High 7.8 EPSS 0.1% Linux kernel

In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: CGX: add bounds check to cgx_speed_mbps index cgx_speed_mbps has 13 elements but RESP_LINKSTAT_SPEED can yield values 0-15. If it returns a value >= 13, this causes an out-of-bounds array access. Add a bounds check and default to speed 0 if the index is out of range.

CVE-2026-64225CVE identifier
7.8CVSS 3.1 base score (high)
0.1%EPSS: chance of exploitation in the next 30 days (higher than 3% of CVEs)
2026-07-24published

What do these terms mean? CVE · CVSS score · exploited (KEV) · EPSS · backported fix · all terms

What to do now

Check whether you run Linux kernel and which version (commands below).
Install the fixed version for your system: see “Patch it” below.
Reboot into the new kernel (uname -r to confirm); live patching (kpatch, Ubuntu Livepatch, SUSE kGraft/klp) can defer the reboot for some CVEs

Affected and fixed versions

Affected:

Linux Linux 61071a871ea6eb2125ece91c1a0dbb124a318c8a to before 94071141f00bc414e8f8f7f5db3b5143d535299f
Linux Linux 61071a871ea6eb2125ece91c1a0dbb124a318c8a to before 985b5e38ac4f4d5ff03c8bfd8484353b440a1579
Linux Linux 61071a871ea6eb2125ece91c1a0dbb124a318c8a to before 93d3dc81098cd60fb74d434ba7985ddfd9de5acb
Linux Linux 61071a871ea6eb2125ece91c1a0dbb124a318c8a to before e043017ac429caee73bd30c5a725659f1a3a4568
Linux Linux 61071a871ea6eb2125ece91c1a0dbb124a318c8a to before 8201bf45cc7c1c1a09290c4db8ab1e19801f8fec
Linux Linux 61071a871ea6eb2125ece91c1a0dbb124a318c8a to before 47a4cf2229be379cf88f92e32e1240337cd6273f
Linux Linux 61071a871ea6eb2125ece91c1a0dbb124a318c8a to before 2c3d26b4a62454945ba9ef3af3174d3e40e7afef
Linux Linux 61071a871ea6eb2125ece91c1a0dbb124a318c8a to before c0bf0a4f3f1f5f57aa83e1400ba4f56f0abfd542
Linux Linux 4.20

Patch it

Use the commands for your system. Distribution packages often keep an older version number with the fix backported, so compare with the fixed package versions in the table below, not only with the upstream version.

Debian

sudo apt update
sudo apt install --only-upgrade linux-image-amd64

Ubuntu

sudo apt update
sudo apt install --only-upgrade linux-image-generic (or the installed flavour: linux-image-aws, -azure, -gcp, -virtual)

RHEL, AlmaLinux, Rocky, Oracle

sudo dnf upgrade --refresh kernel

Fedora

sudo dnf upgrade --refresh kernel

SUSE / openSUSE

sudo zypper refresh
sudo zypper update kernel-default

Amazon Linux

sudo dnf upgrade --releasever=latest kernel kernel6.12

Arch Linux

sudo pacman -Syu

Alpine

apk update && apk upgrade linux-lts linux-virt

FreeBSD

not Linux

General update steps for every system are on the Linux and Unix & BSD pages; after updating, see which services to restart.

Fix status in Linux distributions

Release	Package	Status	Fixed version / advisory
Debian 12	`linux`	fixed	`6.1.176-1`
Debian 13	`linux`	fixed	`6.12.94-1`
Debian testing	`linux`	fixed	`7.0.12-1`
Red Hat Enterprise Linux 9	`kernel`	fix deferred
Red Hat Enterprise Linux 9	`kernel-rt`	fix deferred
Red Hat Enterprise Linux 10	`kernel`	fix deferred
Red Hat Enterprise Linux 10	`libkrun`	fix deferred

From the Debian security tracker, Ubuntu CVE tracker and Red Hat Security Data API, refreshed every few hours.

Sources

Page generated automatically from official sources on 2026-11-03 18:05 UTC. Always confirm with your vendor's advisory.