CVE-2026-89596 Linux Kernel forcedeth - Out of Bounds Read/Write

Linux kernel forcedeth driver contains an off-by-one vulnerability caused by incorrect loop boundary in saving/restoring non-PCI config space, letting attackers trigger out-of-bounds memory access during suspend/resume, exploit requires kernel module loaded and suspend/resume cycle.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.18% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Out of Bounds Read/Write
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Published
11 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix for forcedeth off-by-one error.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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