Linux · Red Hat · Security advisory · October 19, 2026

RHSA-2026:84574: Security update for 8 packages

RHSA-2026:84574, released October 19, 2026, fixes 5 CVEs across 8 products. None of them is reported as exploited. Patch Radar priority: High.

High
CVEs closed
5
None rated Critical
Exploited
0
None reported
Highest CVSS
7.8
Base score, 0 to 10
Highest EPSS
0.0020
10th percentile

Priority of the 5 CVEs

Patch now 0 Urgent 0 High 5 Routine 0

Fixed package versions

ProductReleaseFixed in
xorg-x11-server-XdmxRHEL 90:1.20.11-34.el9_8.5
xorg-x11-server-XephyrRHEL 90:1.20.11-34.el9_8.5
xorg-x11-server-XnestRHEL 90:1.20.11-34.el9_8.5
xorg-x11-server-XorgRHEL 90:1.20.11-34.el9_8.5
xorg-x11-server-XvfbRHEL 90:1.20.11-34.el9_8.5
xorg-x11-server-commonRHEL 90:1.20.11-34.el9_8.5
xorg-x11-server-develRHEL 90:1.20.11-34.el9_8.5
xorg-x11-server-sourceRHEL 90:1.20.11-34.el9_8.5

CVEs this fix closes

PriorityCVETitleCVSSEPSSExploitation
High CVE-2026-93518 X.Org Server XKB ResizeKeyType Numeric Truncation7.8 0.0020 None reported
High CVE-2026-93519 X.Org Server XFixes Pointer Barrier Event List Buffer Overflow7.8 0.0020 None reported
High CVE-2026-93520 X.Org Server XKB ChangeKeycodeRange Heap Out-of-Bounds Write7.8 0.0020 None reported
High CVE-2026-93517 X.Org Server GLX RenderLarge Heap Buffer Overflow7.8 0.0019 None reported
High CVE-2026-93516 .Org Server XInput Passive Grab Use-After-Free7.8 0.0019 None reported
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