libXrender: libXrender: Code injection via heap overflow in RenderQueryPictFormats

A flaw was found in libXrender. Malicious X servers can exploit a heap overflow vulnerability in the RenderQueryPictFormats function. This allows them to inject arbitrary code into connected X clients, potentially leading to unauthorized control over the client's system...

DEBIAN-CVE-2026-93523

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...

AZL-112291 CVE-2026-93536 affecting package xorg-x11-server-Xwayland for versions less than 24.1.14-1

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...

DEBIAN-CVE-2026-93536

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...

ALPINE-CVE-2026-93536

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...

CVE-2026-93524

A buffer overread exists in the CheckKeySyms() function within the X.Org X Server (versions before 21.1.25 ) and XWayland (versions before 24.1.14 ). The root cause is a desynchronization during the SetMap request: when the first loop populates a validation array for new key widths, the second lo...

DEBIAN-CVE-2026-93522

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...

CVE-2026-93522

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...

CVE-2026-93523

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...

EUVD-2026-112256

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...

CVE-2026-93522

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...

EUVD-2026-112146

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...

AZL-111455 CVE-2026-93520 affecting package xorg-x11-server 1.20.10-6

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 context...

CVE-2026-93520

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 context...

CVE-2026-93519 X.Org Server XFixes Pointer Barrier Event List Buffer Overflow

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...

CVE-2026-93519

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...

EUVD-2026-112075

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 server context...

Alma Linux: CVE-2026-93523: Important: xorg-x11-server security update (Multiple Advisories)

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...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: libXrender (UTSA-2026-142327)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-142327 advisory. A heap overflow in libXrender before 0.9.13 inRenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients. Tenable has extract...

Important: libXrender

Issue Overview: A heap overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients. CVE-2026-88807 Affected Packages: libXrender Issue Correction: Run dnf update libXrender --releasever 2023.12.20261012 or dnf update...