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CVE-2026-93517high8.5

X.Org Server GLX RenderLarge Heap Buffer Overflow

Impact

A heap buffer overflow in handling GLX RenderLarge request where dataBytes exceeds cmdlen in X.org X server before 21.1.25 and XWayland before 24.1.14 that could be be triggered by an authenticated X client could cause crashes or code execution in X server context.

Source excerpt · suse

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

x.orgg · xorg-x11-server

Other versions: unaffected

Version / rangeSource status
0 to before 21.1.25affected
suse version evidence

x.org · xwayland

Other versions: unaffected

Version / rangeSource status
0 to before 24.1.14affected
suse version evidence

Original source description

A heap buffer overflow in handling GLX RenderLarge request where dataBytes exceeds cmdlen in X.org X server before 21.1.25 and XWayland before 24.1.14 that could be be triggered by an authenticated X client could cause crashes or code execution in X server context.

References