CVE-2026-97990 Linux kernel - Denial of Service

Linux kernel vdpa_sim_net contains a vulnerability caused by improper handling of signed byte count from vringh_iov_pull_iotlb(), letting attackers cause incorrect RX path length processing, exploit requires kernel interaction.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.12% chance of exploitation in 30 days
View the NVD record ↗

Details

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

Vendor fix

Update to the latest Linux kernel version containing the patch.

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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