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CVE-2026-93523

Medium priority
Needs evaluation

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...

7 affected packages

xorg, xorg-server, xwayland, xorg-server-hwe-16.04, xorg-server-hwe-18.04...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xwayland Needs evaluation Needs evaluation Needs evaluation — —
xorg-server-hwe-16.04 Not in release Not in release Not in release — —
xorg-server-hwe-18.04 Not in release Not in release Not in release — Needs evaluation
xorg-hwe-16.04 Not in release Not in release Not in release — —
xorg-hwe-18.04 Not in release Not in release Not in release — Not affected
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CVE-2026-93522

Medium priority
Needs evaluation

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...

7 affected packages

xorg, xorg-server, xwayland, xorg-server-hwe-16.04, xorg-server-hwe-18.04...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xwayland Needs evaluation Needs evaluation Needs evaluation — —
xorg-server-hwe-16.04 Not in release Not in release Not in release — —
xorg-server-hwe-18.04 Not in release Not in release Not in release — Needs evaluation
xorg-hwe-16.04 Not in release Not in release Not in release — —
xorg-hwe-18.04 Not in release Not in release Not in release — Not affected
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CVE-2026-93521

Medium priority
Needs evaluation

A buffer overflow in RandR ChangeProviderProperty requests in X.Org X Server before 2.1.25 and XWayland before 24.4.14 could be used by authenticated X clients to crash or execute code within the X server context.

7 affected packages

xorg, xorg-server, xwayland, xorg-server-hwe-16.04, xorg-server-hwe-18.04...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xwayland Needs evaluation Needs evaluation Needs evaluation — —
xorg-server-hwe-16.04 Not in release Not in release Not in release — —
xorg-server-hwe-18.04 Not in release Not in release Not in release — Needs evaluation
xorg-hwe-16.04 Not in release Not in release Not in release — —
xorg-hwe-18.04 Not in release Not in release Not in release — Not affected
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CVE-2026-93520

Medium priority
Needs evaluation

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...

7 affected packages

xorg, xorg-server, xwayland, xorg-server-hwe-16.04, xorg-server-hwe-18.04...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xwayland Needs evaluation Needs evaluation Needs evaluation — —
xorg-server-hwe-16.04 Not in release Not in release Not in release — —
xorg-server-hwe-18.04 Not in release Not in release Not in release — Needs evaluation
xorg-hwe-16.04 Not in release Not in release Not in release — —
xorg-hwe-18.04 Not in release Not in release Not in release — Not affected
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CVE-2026-93519

Medium priority
Needs evaluation

A buffer overflow when handling pointer barriers in the XFIXES extension in X.Org X server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in X server context.

7 affected packages

xorg, xorg-server, xwayland, xorg-server-hwe-16.04, xorg-server-hwe-18.04...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xwayland Needs evaluation Needs evaluation Needs evaluation — —
xorg-server-hwe-16.04 Not in release Not in release Not in release — —
xorg-server-hwe-18.04 Not in release Not in release Not in release — Needs evaluation
xorg-hwe-16.04 Not in release Not in release Not in release — —
xorg-hwe-18.04 Not in release Not in release Not in release — Not affected
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CVE-2026-93518

Medium priority
Needs evaluation

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...

7 affected packages

xorg, xorg-server, xwayland, xorg-server-hwe-16.04, xorg-server-hwe-18.04...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xwayland Needs evaluation Needs evaluation Needs evaluation — —
xorg-server-hwe-16.04 Not in release Not in release Not in release — —
xorg-server-hwe-18.04 Not in release Not in release Not in release — Needs evaluation
xorg-hwe-16.04 Not in release Not in release Not in release — —
xorg-hwe-18.04 Not in release Not in release Not in release — Not affected
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CVE-2026-93517

Medium priority
Needs evaluation

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...

7 affected packages

xorg, xorg-server, xwayland, xorg-server-hwe-16.04, xorg-server-hwe-18.04...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xwayland Needs evaluation Needs evaluation Needs evaluation — —
xorg-server-hwe-16.04 Not in release Not in release Not in release — —
xorg-server-hwe-18.04 Not in release Not in release Not in release — Needs evaluation
xorg-hwe-16.04 Not in release Not in release Not in release — —
xorg-hwe-18.04 Not in release Not in release Not in release — Not affected
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CVE-2026-93516

Medium priority
Needs evaluation

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...

7 affected packages

xorg, xorg-server, xwayland, xorg-server-hwe-16.04, xorg-server-hwe-18.04...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xwayland Needs evaluation Needs evaluation Needs evaluation — —
xorg-server-hwe-16.04 Not in release Not in release Not in release — —
xorg-server-hwe-18.04 Not in release Not in release Not in release — Needs evaluation
xorg-hwe-16.04 Not in release Not in release Not in release — —
xorg-hwe-18.04 Not in release Not in release Not in release — Not affected
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CVE-2026-93515

Medium priority
Needs evaluation

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.

7 affected packages

xorg, xorg-server, xwayland, xorg-server-hwe-16.04, xorg-server-hwe-18.04...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xwayland Needs evaluation Needs evaluation Needs evaluation — —
xorg-server-hwe-16.04 Not in release Not in release Not in release — —
xorg-server-hwe-18.04 Not in release Not in release Not in release — Needs evaluation
xorg-hwe-16.04 Not in release Not in release Not in release — —
xorg-hwe-18.04 Not in release Not in release Not in release — Not affected
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CVE-2026-88812

Medium priority
Needs evaluation

A double free in XKB SetGeometryin X.Org X Server before 21.1.25 and X Wayland before 24.1.14 could be used by attached clients to cause a crash or potentially code in the x server context.

7 affected packages

xorg, xorg-server, xwayland, xorg-server-hwe-16.04, xorg-server-hwe-18.04...

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
xorg Not affected Not affected Not affected Not affected Not affected
xorg-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
xwayland Needs evaluation Needs evaluation Needs evaluation — —
xorg-server-hwe-16.04 Not in release Not in release Not in release — —
xorg-server-hwe-18.04 Not in release Not in release Not in release — Needs evaluation
xorg-hwe-16.04 Not in release Not in release Not in release — —
xorg-hwe-18.04 Not in release Not in release Not in release — Not affected
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