EUVD-2025-36898

A flaw was identified in the X.Org X server’s X Keyboard Xkb extension where improper bounds checking in the XkbSetCompatMap function can cause an unsigned short overflow. If an attacker sends specially crafted input data, the value calculation may overflow, leading to memory corruption or a cras...

CVE-2025-62231

A flaw was identified in the X.Org X server’s X Keyboard Xkb extension where improper bounds checking in the XkbSetCompatMap function can cause an unsigned short overflow. If an attacker sends specially crafted input data, the value calculation may overflow, leading to memory corruption or a cras...

CVE-2025-62231

A flaw was identified in the X.Org X server’s X Keyboard Xkb extension where improper bounds checking in the XkbSetCompatMap function can cause an unsigned short overflow. If an attacker sends specially crafted input data, the value calculation may overflow, leading to memory corruption or a cras...

SUSE CVE-2025-62230

A flaw was discovered in the X.Org X server's X Keyboard Xkb extension when handling client resource cleanup. The software frees certain data structures without properly detaching related resources, leading to a use-after-free condition. This can cause memory corruption or a crash when affected...

SUSE CVE-2025-62231

A flaw was identified in the X.Org X server's X Keyboard Xkb extension where improper bounds checking in the XkbSetCompatMap function can cause an unsigned short overflow. If an attacker sends specially crafted input data, the value calculation may overflow, leading to memory corruption or a cras...

PT-2025-44230

Name of the Vulnerable Software and Affected Versions X.Org Server affected versions not specified Description A flaw exists in the X Keyboard Xkb extension of the X.Org X server. Improper bounds checking within the XkbSetCompatMap function can lead to an unsigned short overflow when processing...

UBUNTU-CVE-2025-62231

A flaw was identified in the X.Org X server’s X Keyboard Xkb extension where improper bounds checking in the XkbSetCompatMap function can cause an unsigned short overflow. If an attacker sends specially crafted input data, the value calculation may overflow, leading to memory corruption or a cras...

UBUNTU-CVE-2025-62230

A flaw was discovered in the X.Org X server’s X Keyboard Xkb extension when handling client resource cleanup. The software frees certain data structures without properly detaching related resources, leading to a use-after-free condition. This can cause memory corruption or a crash when affected...

USN-7085-2 xorg-server, xorg-server-hwe-16.04, xorg-server-hwe-18.04 vulnerability

USN-7085-1 fixed a vulnerability in X.Org. This update provides the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. Original advisory details: Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled certain memory operations in the X Keyboard Extension. An attacker...

USN-7085-1 xorg-server, xwayland vulnerability

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled certain memory operations in the X Keyboard Extension. An attacker could use this issue to cause the X Server to crash, leading to a denial of service, or possibly execute arbitrary code...

xorg-x11-server: out-of-bounds memory reads/writes in XKB button actions

A flaw was found in xorg-server. Querying or changing XKB button actions such as moving from a touchpad to a mouse can result in out-of-bounds memory reads and writes. This may allow local privilege escalation or possible remote code execution in cases where X11 forwarding is involved...

xorg-x11-server: out-of-bounds memory reads/writes in XKB button actions

A flaw was found in xorg-server. Querying or changing XKB button actions such as moving from a touchpad to a mouse can result in out-of-bounds memory reads and writes. This may allow local privilege escalation or possible remote code execution in cases where X11 forwarding is involved...

xorg-x11-server: buffer overflow in _GetCountedString() in xkb/xkb.c

A flaw was found in the xorg-x11-server package. A buffer overflow can occur in the GetCountedString function in xkb/xkb.c due to improper input validation, allowing for possible escalation of privileges, execution of arbitrary code, or a denial of service...

xorg-x11-server: out-of-bounds access in ProcXkbSetDeviceInfo request handler of the Xkb extension

A flaw was found in the Xorg-x11-server. The specific flaw exists within the handling of ProcXkbSetDeviceInfo requests. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated buffer. This flaw allows an attacker...

xorg-x11-server: out-of-bounds access in ProcXkbSetDeviceInfo request handler of the Xkb extension

A flaw was found in the Xorg-x11-server. The specific flaw exists within the handling of ProcXkbSetDeviceInfo requests. The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated buffer. This flaw allows an attacker...

DEBIAN-CVE-2017-13723

In X.Org Server aka xserver and xorg-server before 1.19.4, a local attacker authenticated to the X server could overflow a global buffer, causing crashes of the X server or potentially other problems by injecting large or malformed XKB related atoms and accessing them via xkbcomp...

X.Org X Server 'xkb/xkb.c' Information Disclosure Vulnerability

Xorg X Server is one of the X Window System display servers available on multiple platforms. X.Org X Server 'xkb/xkb.c' fails to properly handle XkbSetGeometry requests, allowing an attacker to exploit vulnerability-sensitive information...

CVE-2013-4394

The SetX11Keyboard function in systemd, when PolicyKit Local Authority PKLA is used to change the group permissions on the X Keyboard Extension XKB layouts description, allows local users in the group to modify the Xorg X11 Server configuration file and possibly gain privileges via vectors...

Design/Logic Flaw

The SetX11Keyboard function in systemd, when PolicyKit Local Authority PKLA is used to change the group permissions on the X Keyboard Extension XKB layouts description, allows local users in the group to modify the Xorg X11 Server configuration file and possibly gain privileges via vectors...

CVE-2013-4394

CVE-2013-4394 concerns systemd’s SetX11Keyboard function. When PKLA is used to change group permissions on XKB layouts, local users in that group may modify the Xorg X11 Server configuration file and potentially gain privileges through vectors involving special and control characters. The vulnera...