CVE-2026-88806

A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the keysymmap...

UBUNTU-CVE-2026-88806

A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the keysymmap...

CVE-2026-88806

libX11 versions before 1.8.14 are vulnerable to a heap-based buffer overflow in the handling of the XkbGetMap reply, specifically overflowing the key_sym_map buffer. A malicious X server can trigger this, leading to potential compromise of confidentiality, integrity, and availability as rated by ...

CVE-2026-88806 libX11 XkbGetMap Reply Heap-based Buffer Overflow

A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the keysymmap...

EUVD-2026-83914

A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the keysymmap...

CVE-2026-88806

A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the keysymmap...

CVE-2026-88806 libX11 XkbGetMap Reply Heap-based Buffer Overflow

A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the keysymmap...

PT-2026-104826

A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the key sym map...

PT-2026-96101

Name of the Vulnerable Software and Affected Versions libX11 versions prior to 1.8.14 Description A buffer overflow exists in the handling of XkbGetMap, which can lead to an overflow of the key sym map. This issue allows a malicious X server to exploit the flaw. Recommendations Update libX11 to...

CVE-2026-88806: Heap-based Buffer Overflow

A malicious X server could exploit a buffer overflow in libX11 before 1.8.14 during handling of XkbGetMap overflowing the keysymmap...

OPENSUSE-SU-2026:11833-1 libX11-6-1.8.13-2.1 on GA media

These are all security issues fixed in the libX11-6-1.8.13-2.1 package on the GA media of openSUSE Tumbleweed...

Astra Linux – Vulnerability in libx11

The LookupCol.c file in X.Org X, as well as versions of X11 such as X11R7.7 and libX11 before version 1.7.1, may allow remote attackers to execute arbitrary code. The libX11 XLookupColor function, intended for server-side color lookups, contains a flaw that allows a client to send color-name...

Astra Linux – Vulnerability in libx11

A vulnerability was discovered in libX11. The security flaw arises because the functions in src/InitExt.c of libX11 do not check whether the values provided for the Request, Event, or Error IDs are within the bounds of the arrays to which those functions refer, by using those IDs as array indexes...

Photon OS 5.0: Libx11 PHSA-2023-5.0-90-0112

An update of the libX11 package has been released. %NASLMINLEVEL 80900 C Tenable, Inc. The descriptive text and package checks in this plugin were extracted from VMware Security Advisory PHSA-2023-5.0-90-0112. The text itself is copyright C VMware, Inc. include'compat.inc'; if description...

Photon OS 5.0: Libx11 PHSA-2023-5.0-92-0029

An update of the libX11 package has been released. %NASLMINLEVEL 80900 C Tenable, Inc. The descriptive text and package checks in this plugin were extracted from VMware Security Advisory PHSA-2023-5.0-92-0029. The text itself is copyright C VMware, Inc. include'compat.inc'; if description...

Photon OS 5.0: Libx11 PHSA-2023-5.0-92-0112

An update of the libX11 package has been released. %NASLMINLEVEL 80900 C Tenable, Inc. The descriptive text and package checks in this plugin were extracted from VMware Security Advisory PHSA-2023-5.0-92-0112. The text itself is copyright C VMware, Inc. include'compat.inc'; if description...

Photon OS 5.0: Libx11 PHSA-2023-5.0-91-0029

An update of the libX11 package has been released. %NASLMINLEVEL 80900 C Tenable, Inc. The descriptive text and package checks in this plugin were extracted from VMware Security Advisory PHSA-2023-5.0-91-0029. The text itself is copyright C VMware, Inc. include'compat.inc'; if description...

Photon OS 5.0: Libx11 PHSA-2023-5.0-90-0029

An update of the libX11 package has been released. %NASLMINLEVEL 80900 C Tenable, Inc. The descriptive text and package checks in this plugin were extracted from VMware Security Advisory PHSA-2023-5.0-90-0029. The text itself is copyright C VMware, Inc. include'compat.inc'; if description...

Photon OS 5.0: Libx11 PHSA-2023-5.0-91-0112

An update of the libX11 package has been released. %NASLMINLEVEL 80900 C Tenable, Inc. The descriptive text and package checks in this plugin were extracted from VMware Security Advisory PHSA-2023-5.0-91-0112. The text itself is copyright C VMware, Inc. include'compat.inc'; if description...

JLSEC-2026-470 An integer overflow vulnerability leading to a double-free was found in libX11

An integer overflow vulnerability leading to a double-free was found in libX11. This flaw allows a local privileged attacker to cause an application compiled with libX11 to crash, or in some cases, result in arbitrary code execution. The highest threat from this flaw is to confidentiality,...