Red Hat Red Hat Enterprise Linux 10 Incorrect Calculation Of Buffer Size Rated 7.8 CVSS
Last refreshed2026-10-15
Status: UPDATED
| Advisory ID: CVE-2026-86563
Key Details
CVE
CVE-2026-86563
CVSS Score / Version
7.8 (High) / CVSS v3.1
Updated
2026-10-14
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Prose
attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products
see table below
Classified as
CWE-131 (Incorrect Calculation of Buffer Size)
Exploitation prediction (EPSS)
0.16% probability of exploitation in the next 30 days (5% percentile) -- FIRST.org's EPSS model.
Affected Products, Subsystems & Sectors
Vendor
Product
Affected Versions
Patch Status
Red Hat
Red Hat Enterprise Linux 10
Red Hat
Red Hat Enterprise Linux 8
Red Hat
Red Hat Enterprise Linux 9
Red Hat
Red Hat OpenShift Container Platform 4
Red Hat
Red Hat OpenStack Platform 13 (Queens)
Red Hat
Fast Datapath for RHEL 10
Red Hat
Fast Datapath for RHEL 8
Red Hat
Fast Datapath for RHEL 9
Subsystems
OT Supporting Infrastructure
Sectors
Multiple
What to Know
A flaw was found in DPDK lib/vhost. A double-offset bug in vhost log mapping calculation can lead to incorrect memory access. (NVD)
What to Do
Monitor Red Hat's web page for any future patch releases.