x.org vulnerabilities (CVE)

CVE records published for x.org, newest first. Follow to get an email when a new one appears.

76 results
5.3Medium
CVE-2026-93536

X.Org Server GestureBuildSprite Use-After-Free

x.org xorg-x11-server; x.org xwayland

A use after free caused by missing lifecycle management of gesture sprites in GestureBuildSprite() in X.Org X Server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash the X server or potentially execute code.

7.8High
CVE-2026-93523

X.Org Server XInput2 PassiveUngrabDevice Out-of-Bounds Write

x.org xorg-x11-server; x.org xwayland

A heap buffer overflow caused by a XIPassiveUngrabDevice request with an out-of-range modifier value in X.Org X Server before 21.1.15 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in X server context.

7.8High
CVE-2026-93522

X.Org Server Glamor CopyArea Heap Buffer Overflow

x.org xorg-x11-server; x.org xwayland

A heap buffer overflow caused by mismatched size usage in CopyArea CPU-to-FBO path in X.Org X Server before 21.1.15 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in the X server context.

7.8High
CVE-2026-93520

X.Org Server XKB ChangeKeycodeRange Heap Out-of-Bounds Write

x.org xorg-x11-server; x.org xwayland

A heap buffer overflow caused by mismatching size calculations between XkbAllocNames and ChangeKeycodeRange in X.org X server before 2.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in X server …

7.8High
CVE-2026-93518

X.Org Server XKB ResizeKeyType Numeric Truncation

x.org xorg-x11-server; x.org xwayland

An integer truncation issue in XkbResizeKeyType() that could lead to a heap buffer overflow by authenticated X clients in X.org X server before 21.1.25 and XWayland before 24.1.14 could be exploited for crashes or potential code execution in the X server.

8.5High
CVE-2026-93517

X.Org Server GLX RenderLarge Heap Buffer Overflow

x.orgg xorg-x11-server; x.org xwayland

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.

5.5Medium
CVE-2026-93516

.Org Server XInput Passive Grab Use-After-Free

x.org xorg-x11-server; x.org xwayland

A use-after-free caused by lack of lifecycle management when adding / removing XInput master devices in X.org X Server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X Clients to crash the X server or potentially execute code in X s…

6.8Medium
CVE-2026-93515

.Org Server Present Extension Use-After-Free

X.org xorg-x11-server; x.org xwayland

A use-after-free in present_clear_window_notifies() in the X.org X Server before 21.1.25 and X Wayland before 24.1.14 could be used by malicious X clients to crash or potentially execute code in the X server context.