CVE-2026-34003

A flaw was found in the X.Org X server's XKB key types request validation. A local attacker could send a specially crafted request to the X server, leading to an out-of-bounds memory access vulnerability. This could result in the disclosure of sensitive information or cause the server to crash,...

CVE-2026-34003

A flaw was found in the X.Org X server's XKB key types request validation. A local attacker could send a specially crafted request to the X server, leading to an out-of-bounds memory access vulnerability. This could result in the disclosure of sensitive information or cause the server to crash,...

CVE-2026-34003

The CVE-2026-34003 issue is a local, out-of-bounds/ buffer-overflow in the XKB key types validation of the X.Org X server (Xwayland included in affected stacks). Public reports enumerate XKB Buffer overflow in CheckKeyTypes() as the root cause, leading to possible information disclosure and Denia...

CVE-2026-34001

CVE-2026-34001 is a use-after-free in the X.Org X server’s XSYNC fence triggering logic (miSyncTriggerFence()). The vulnerability can be exploited by a local attacker with X11 access, potentially crashing the X server and enabling memory corruption, with high impact on confidentiality, integrity,...

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-2026-34001 Xorg: xwayland: x.org x server: use-after-free vulnerability leads to server crash and potential memory corruption

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-2026-34001

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

CVE-2026-33999 affects the X.Org X server, specifically an integer underflow in the XKB compatibility map handling, allowing a local or remote X11 server user to trigger a buffer read overrun. The result is memory-safety violations and potential DoS or other impacts as described in the connected ...

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-2026-33999 Xorg: xwayland: x.org x server: denial of service via integer underflow in xkb compatibility map handling

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-2026-33999

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-2026-33999 Xorg: xwayland: x.org x server: denial of service via integer underflow in xkb compatibility map handling

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-2026-33999

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 数字错误漏洞

X.Org X Server is an X Window system display server developed by the X.Org Foundation. X.Org X Server has a numerical error vulnerability, which stems from integer underflow in the XKB compatibility mapping process. This vulnerability may allow attackers to trigger a buffer overflow, leading to...

[SECURITY] Fedora 43 Update: xorg-x11-server-Xwayland-24.1.10-1.fc43

Xwayland is an X server for running X clients under Wayland...

Security update for xorg-x11-server (important)

openSUSE security update: security update for xorg-x11-server ------------------------------------------------------------- Announcement ID: openSUSE-SU-2026:20544-1 Rating: important References: bsc1260922 bsc1260923 bsc1260924 bsc1260925 bsc1260926 Cross-References: CVE-2026-33999 CVE-2026-3400...

Fedora 43 : xorg-x11-server-Xwayland (2026-beff97a194)

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-beff97a194 advisory. Update to xwayland 24.1.10, CVE fix for: CVE-2026-33999, CVE-2026-34000, CVE-2026-34001, CVE-2026-34002, CVE-2026-34003 Tenable has extracted the...

PT-2026-46940

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 FreeCounter function. This occurs when a client establishes multiple SyncCounters and awaits their triggers...

PT-2026-46942

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 read flaw exists in the glXDisp ChangeDrawableAttributes function. Due to an incorrect size validation check, the system may...

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...