CVE-2026-33999

A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling, allows an attacker with local or remote X11 server access to trigger a buffer read overrun. This can lead to memory-safety violations and potentially a denial of servi...

CVE-2026-34001

A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence function. An attacker with access to the X11 server can exploit this without user interaction, leading to a server crash and potentially...

CVE-2026-33999

A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling, allows an attacker with local or remote X11 server access to trigger a buffer read overrun. This can lead to memory-safety violations and potentially a denial of servi...

X.Org X Server 安全漏洞

X.Org X Server is an X Window system display server developed by the X.Org Foundation. There are security vulnerabilities in X.Org X Server, which stem from the reutilization of freed resources in the XSYNC fence trigger logic. Attackers could exploit these vulnerabilities to cause server crashes...

X.Org X Server 缓冲区错误漏洞

The X.Org X Server is an X Window system display server developed by the X.Org Foundation. The X.Org X Server has a buffer error vulnerability, which stems from an out-of-bounds memory access during the validation of XKB key type requests. This vulnerability could allow local attackers to send...

PT-2026-46943

Name of the Vulnerable Software and Affected Versions X.Org X server affected versions not specified Xwayland affected versions not specified Description A use-after-free flaw exists in the CreateSaverWindow function. A client can trigger a use-after-free read by changing window attributes and...

PT-2026-46939

Name of the Vulnerable Software and Affected Versions X.Org X server affected versions not specified Xwayland affected versions not specified Description A stack-based buffer overflow exists in the X.Org X server and Xwayland. The function XkbSetMapChecks declares a fixed-size stack buffer...

PT-2026-46937

Name of the Vulnerable Software and Affected Versions X.Org X server affected versions not specified Xwayland affected versions not specified Description A use-after-free flaw exists in the miSyncDestroyFence function. This occurs when a client sets up multiple fence triggers, allowing a function...

PT-2026-46941

Name of the Vulnerable Software and Affected Versions X.Org X server affected versions not specified Xwayland affected versions not specified Description A use-after-free flaw exists in the SyncChangeCounter function. A client that establishes multiple SyncCounters can trigger this condition by...

PT-2026-46944

Name of the Vulnerable Software and Affected Versions X.Org X server affected versions not specified Xwayland affected versions not specified Description An out-of-bounds write flaw exists in the X.Org X server and Xwayland within the DRIGetBuffers and DRIGetBuffersWithFormat functions. A client...

FreeBSD : xorg-server -- Multiple vulnerabilities (7b6463c6-3813-11f1-a284-589cfc10a551)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 7b6463c6-3813-11f1-a284-589cfc10a551 advisory. X.Org project reports: Multiple issues have been found in the X server and Xwayland...

xwayland -- Multiple vulnerabilities

X.Org project reports: Multiple issues have been found in the X server and Xwayland implementations published by X.Org for which we are releasing security fixes for in xorg-server-21.1.22 and xwayland-24.1.10...

xorg-server -- Multiple vulnerabilities

X.Org project reports: Multiple issues have been found in the X server and Xwayland implementations published by X.Org for which we are releasing security fixes for in xorg-server-21.1.22 and xwayland-24.1.10...

PT-2026-33105

Name of the Vulnerable Software and Affected Versions xwayland versions prior to 24.1.9-2.1 xorg-x11-server versions prior to 21.1.21-5.1 Description Security issues were identified in xwayland and xorg-x11-server. Recommendations Update xwayland to version 24.1.9-2.1. Update xorg-x11-server to...

PT-2026-33104

Name of the Vulnerable Software and Affected Versions xwayland versions prior to 24.1.9-2.1 xorg-x11-server versions prior to 21.1.21-5.1 Description Security issues were identified in xwayland and xorg-x11-server. Recommendations Update xwayland to version 24.1.9-2.1. Update xorg-x11-server to...

PT-2026-33103

Name of the Vulnerable Software and Affected Versions xwayland versions prior to 24.1.9-2.1 xorg-x11-server versions prior to 21.1.21-5.1 Description Security issues were identified in xwayland and xorg-x11-server. Recommendations Update xwayland to version 24.1.9-2.1. Update xorg-x11-server to...

PT-2026-33106

Name of the Vulnerable Software and Affected Versions xwayland versions prior to 24.1.9-2.1 xorg-x11-server versions prior to 21.1.21-5.1 Description Security issues were identified in xwayland and xorg-x11-server. Recommendations Update xwayland to version 24.1.9-2.1. Update xorg-x11-server to...

PT-2026-33102

Name of the Vulnerable Software and Affected Versions xwayland versions prior to 24.1.9-2.1 xorg-x11-server versions prior to 21.1.21-5.1 Description Security issues were identified in xwayland and xorg-x11-server. Recommendations Update xwayland to version 24.1.9-2.1. Update xorg-x11-server to...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: xorg-x11-server (UTSA-2026-006161)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-006161 advisory. A flaw was found in the X.Org X server and Xwayland when processing X11 Present extension notifications. Improper error handling during notification creation can lea...

Security Bulletin: AIX Xorg X Server is vulnerable to memory corruption or a denial of service (CVE-2025-62230, CVE-2025-62231)

Summary Updated Feb 24 2026: New iFix for 7.3 TL3 SP2 provided with correct fileset prereqs. Updated the affected fileset levels to show that 7.3 TL3 SP2 is vulnerable. Vulnerabilities in Xorg X Server could cause a memory corruption or denial of service CVE-2025-62230, CVE-2025-62231...