CVE-2024-9632

A flaw was found in the X.org server. Due to improperly tracked allocation size in _XkbSetCompatMap, a local attacker may be able to trigger a buffer overflow condition via a specially crafted payload, leading to denial of service or local privilege escalation in distributions where the X.org server is run with root privileges.

A flaw was found in the X.org server. Due to improperly tracked allocation size in _XkbSetCompatMap, a local attacker may be able to trigger a buffer overflow condition via a specially crafted payload, leading to denial of service or local privilege escalation in distributions where the X.org server is run with root privileges.

X.Org X11 X server

Security Fix(es):

VUL-0: CVE-2024-9632: xorg-x11-server,xwayland: Heap-based buffer overflow privilege escalation in _XkbSetCompatMap(CVE-2024-9632)

X.Org is an open-source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical user interfaces are designed upon.

Security Fix(es):

• xorg-x11-server: tigervnc: heap-based buffer overflow privilege escalation vulnerability (CVE-2024-9632)

• X.Org: Xwayland: Use-after-free of the root cursor (CVE-2025-26594)

• xorg: xwayland: Use-after-free in SyncInitTrigger() (CVE-2025-26601)

• xorg: xwayland: Use-after-free in PlayReleasedEvents() (CVE-2025-26600)

• xorg: xwayland: Use of uninitialized pointer in compRedirectWindow() (CVE-2025-26599)

• xorg: xwayland: Out-of-bounds write in CreatePointerBarrierClient() (CVE-2025-26598)

• xorg: xwayland: Buffer overflow in XkbChangeTypesOfKey() (CVE-2025-26597)

• xorg: xwayland: Heap overflow in XkbWriteKeySyms() (CVE-2025-26596)

• Xorg: xwayland: Buffer overflow in XkbVModMaskText() (CVE-2025-26595)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 9 Release Notes linked from the References section.

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

Security Fix(es):

• xorg-x11-server: tigervnc: heap-based buffer overflow privilege escalation vulnerability (CVE-2024-9632)

• X.Org: Xwayland: Use-after-free of the root cursor (CVE-2025-26594)

• xorg: xwayland: Use-after-free in SyncInitTrigger() (CVE-2025-26601)

• xorg: xwayland: Use-after-free in PlayReleasedEvents() (CVE-2025-26600)

• xorg: xwayland: Use of uninitialized pointer in compRedirectWindow() (CVE-2025-26599)

• xorg: xwayland: Out-of-bounds write in CreatePointerBarrierClient() (CVE-2025-26598)

• xorg: xwayland: Buffer overflow in XkbChangeTypesOfKey() (CVE-2025-26597)

• xorg: xwayland: Heap overflow in XkbWriteKeySyms() (CVE-2025-26596)

• Xorg: xwayland: Buffer overflow in XkbVModMaskText() (CVE-2025-26595)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 9 Release Notes linked from the References section.

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

Security Fix(es):

• xorg-x11-server: tigervnc: heap-based buffer overflow privilege escalation vulnerability (CVE-2024-9632)

• X.Org: Xwayland: Use-after-free of the root cursor (CVE-2025-26594)

• xorg: xwayland: Use-after-free in SyncInitTrigger() (CVE-2025-26601)

• xorg: xwayland: Use-after-free in PlayReleasedEvents() (CVE-2025-26600)

• xorg: xwayland: Use of uninitialized pointer in compRedirectWindow() (CVE-2025-26599)

• xorg: xwayland: Out-of-bounds write in CreatePointerBarrierClient() (CVE-2025-26598)

• xorg: xwayland: Buffer overflow in XkbChangeTypesOfKey() (CVE-2025-26597)

• xorg: xwayland: Heap overflow in XkbWriteKeySyms() (CVE-2025-26596)

• Xorg: xwayland: Buffer overflow in XkbVModMaskText() (CVE-2025-26595)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

A flaw was found in the X.org server. Due to improperly tracked allocation size in _XkbSetCompatMap, a local attacker may be able to trigger a buffer overflow condition via a specially crafted payload, leading to denial of service or local privilege escalation in distributions where the X.org server is run with root privileges.

Virtual Network Computing (VNC) is a remote display system which allows users to view a computing desktop environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures. TigerVNC is a suite of VNC servers and clients.

Security Fix(es):

• xorg-x11-server: tigervnc: heap-based buffer overflow privilege escalation vulnerability (CVE-2024-9632)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

X.Org is an open-source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical user interfaces are designed upon.

Security Fix(es):

• xorg-x11-server: tigervnc: heap-based buffer overflow privilege escalation vulnerability (CVE-2024-9632)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Virtual Network Computing (VNC) is a remote display system which allows users to view a computing desktop environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures. TigerVNC is a suite of VNC servers and clients.

Security Fix(es):

• xorg-x11-server: tigervnc: heap-based buffer overflow privilege escalation vulnerability (CVE-2024-9632)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

X.Org is an open-source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical user interfaces are designed upon.

Security Fix(es):

• xorg-x11-server: tigervnc: heap-based buffer overflow privilege escalation vulnerability (CVE-2024-9632)
• X.Org: Xwayland: Use-after-free of the root cursor (CVE-2025-26594)
• xorg: xwayland: Use-after-free in SyncInitTrigger() (CVE-2025-26601)
• xorg: xwayland: Use-after-free in PlayReleasedEvents() (CVE-2025-26600)
• xorg: xwayland: Use of uninitialized pointer in compRedirectWindow() (CVE-2025-26599)
• xorg: xwayland: Out-of-bounds write in CreatePointerBarrierClient() (CVE-2025-26598)
• xorg: xwayland: Buffer overflow in XkbChangeTypesOfKey() (CVE-2025-26597)
• xorg: xwayland: Heap overflow in XkbWriteKeySyms() (CVE-2025-26596)
• Xorg: xwayland: Buffer overflow in XkbVModMaskText() (CVE-2025-26595)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinuxRelease Notes linked from the References section.

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

Security Fix(es):

• xorg-x11-server: tigervnc: heap-based buffer overflow privilege escalation vulnerability (CVE-2024-9632)
• X.Org: Xwayland: Use-after-free of the root cursor (CVE-2025-26594)
• xorg: xwayland: Use-after-free in SyncInitTrigger() (CVE-2025-26601)
• xorg: xwayland: Use-after-free in PlayReleasedEvents() (CVE-2025-26600)
• xorg: xwayland: Use of uninitialized pointer in compRedirectWindow() (CVE-2025-26599)
• xorg: xwayland: Out-of-bounds write in CreatePointerBarrierClient() (CVE-2025-26598)
• xorg: xwayland: Buffer overflow in XkbChangeTypesOfKey() (CVE-2025-26597)
• xorg: xwayland: Heap overflow in XkbWriteKeySyms() (CVE-2025-26596)
• Xorg: xwayland: Buffer overflow in XkbVModMaskText() (CVE-2025-26595)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinuxRelease Notes linked from the References section.

A flaw was found in the X.org server. Due to improperly tracked allocation size in _XkbSetCompatMap, a local attacker may be able to trigger a buffer overflow condition via a specially crafted payload, leading to denial of service or local privilege escalation in distributions where the X.org server is run with root privileges.

A flaw was found in the X.org server. Due to improperly tracked allocation size in _XkbSetCompatMap, a local attacker may be able to trigger a buffer overflow condition via a specially crafted payload, leading to denial of service or local privilege escalation in distributions where the X.org server is run with root privileges.

A flaw was found in the X.org server. Due to improperly tracked allocation size in _XkbSetCompatMap, a local attacker may be able to trigger a buffer overflow condition via a specially crafted payload, leading to denial of service or local privilege escalation in distributions where the X.org server is run with root privileges.

• CVE-2024-31080: xorg-x11-server: fix heap-based buffer over-read vulnerability in ProcXIGetSelectedEvents() by avoiding byte-swapped length values in replies
• CVE-2024-9632: xorg-x11-server: fix improperly tracked allocation size in _XkbSetCompatMap to prevent buffer overflow condition
• CVE-2024-31081: xorg-x11-server: fix heap-based buffer over-read vulnerability in ProcXIPassiveGrabDevice() function to prevent memory leakage and segmentation faults by handling byte-swapped length values in replies correctly

• Rebuilt with xorg-x11-server-1.20.4-99.el7_9.tuxcare.els8, mitigating the security vulnerabilities identified by the following CVEs: CVE-2025-62229, CVE-2025-62230, CVE-2025-62231
• Moved CVE-2024-9632 patch to xorg-x11-server package

Due to an improperly tracked allocation size in _XkbSetCompatMap, a local attacker may be able to trigger a buffer overflow condition via a specially-crafted payload, leading to denial of service or local privilege escalation in distributions where the X.org server is run with root privileges. (CVE-2024-9632)

These are all security issues fixed in the xorg-x11-server-21.1.14-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the xwayland-24.1.4-1.1 package on the GA media of openSUSE Tumbleweed.

Virtual Network Computing (VNC) is a remote display system which allows users to view a computing desktop environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures. TigerVNC is a suite of VNC servers and clients.

Security Fix(es):

• xorg-x11-server: tigervnc: heap-based buffer overflow privilege escalation vulnerability (CVE-2024-9632)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

X.Org is an open-source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical user interfaces are designed upon.

Security Fix(es):

• xorg-x11-server: tigervnc: heap-based buffer overflow privilege escalation vulnerability (CVE-2024-9632)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Virtual Network Computing (VNC) is a remote display system which allows users to view a computing desktop environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures. TigerVNC is a suite of VNC servers and clients.

Security Fix(es):

• xorg-x11-server: tigervnc: heap-based buffer overflow privilege escalation vulnerability (CVE-2024-9632)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

This update for xorg-x11-server fixes the following issues:

• CVE-2024-9632: Fixed heap-based buffer overflow privilege escalation in _XkbSetCompatMap (bsc#1231565).

This update for xorg-x11-server fixes the following issues:

• CVE-2024-9632: Fixed heap-based buffer overflow privilege escalation in _XkbSetCompatMap (bsc#1231565).

This update for xorg-x11-server fixes the following issues:

• CVE-2024-9632: Fixed heap-based buffer overflow privilege escalation in _XkbSetCompatMap (bsc#1231565).

This update for xwayland fixes the following issues:

• CVE-2024-9632: Fixed heap-based buffer overflow privilege escalation in _XkbSetCompatMap (bsc#1231565).

This update for xwayland fixes the following issues:

• CVE-2024-9632: Fixed heap-based buffer overflow privilege escalation in _XkbSetCompatMap (bsc#1231565).

This update for xwayland fixes the following issues:

• CVE-2024-9632: Fixed heap-based buffer overflow privilege escalation in _XkbSetCompatMap (bsc#1231565).

This update for xorg-x11-server fixes the following issues:

• CVE-2024-9632: Fixed heap-based buffer overflow privilege escalation in _XkbSetCompatMap (bsc#1231565).

This update for xorg-x11-server fixes the following issues:

• CVE-2024-9632: Fixed heap-based buffer overflow privilege escalation in _XkbSetCompatMap (bsc#1231565).