CVE-2024-31081

A heap-based buffer over-read vulnerability was found in the X.org server's ProcXIPassiveGrabDevice() function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a different endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory values and then transmit them back to the client until encountering an unmapped page, resulting in a crash. Despite the attacker's inability to control the specific memory copied into the replies, the small length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds reads.

A heap-based buffer over-read vulnerability was found in the X.org server's ProcXIPassiveGrabDevice() function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a different endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory values and then transmit them back to the client until encountering an unmapped page, resulting in a crash. Despite the attacker's inability to control the specific memory copied into the replies, the small length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds reads.

X.Org X11 X server

Security Fix(es):

A heap-based buffer over-read vulnerability was found in the X.org server's ProcXIGetSelectedEvents() function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a different endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory values and then transmit them back to the client until encountering an unmapped page, resulting in a crash. Despite the attacker's inability to control the specific memory copied into the replies, the small length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds reads.(CVE-2024-31080)

A heap-based buffer over-read vulnerability was found in the X.org server's ProcXIPassiveGrabDevice() function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a different endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory values and then transmit them back to the client until encountering an unmapped page, resulting in a crash. Despite the attacker's inability to control the specific memory copied into the replies, the small length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds reads.(CVE-2024-31081)

A heap-based buffer over-read vulnerability was found in the X.org server's ProcAppleDRICreatePixmap() function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a different endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory values and then transmit them back to the client until encountering an unmapped page, resulting in a crash. Despite the attacker's inability to control the specific memory copied into the replies, the small length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds reads.(CVE-2024-31082)

A use-after-free vulnerability was found in the ProcRenderAddGlyphs() function of Xorg servers. This issue occurs when AllocateGlyph() is called to store new glyphs sent by the client to the X server, potentially resulting in multiple entries pointing to the same non-refcounted glyphs. Consequently, ProcRenderAddGlyphs() may free a glyph, leading to a use-after-free scenario when the same glyph pointer is subsequently accessed. This flaw allows an authenticated attacker to execute arbitrary code on the system by sending a specially crafted request.(CVE-2024-31083)

Xwayland is an X server for running X clients under Wayland. Security Fix(es):

A flaw was found in xorg-server. A specially crafted request to RRChangeProviderProperty or RRChangeOutputProperty can trigger an integer overflow which may lead to a disclosure of sensitive information.(CVE-2023-6478)

A flaw was found in X.Org server. Both DeviceFocusEvent and the XIQueryPointer reply contain a bit for each logical button currently down. Buttons can be arbitrarily mapped to any value up to 255, but the X.Org Server was only allocating space for the device's particular number of buttons, leading to a heap overflow if a bigger value was used.(CVE-2023-6816)

A flaw was found in the X.Org server. The GLX PBuffer code does not call the XACE hook when creating the buffer, leaving it unlabeled. When the client issues another request to access that resource (as with a GetGeometry) or when it creates another resource that needs to access that buffer, such as a GC, the XSELINUX code will try to use an object that was never labeled and crash because the SID is NULL.(CVE-2024-0408)

A heap-based buffer over-read vulnerability was found in the X.org server's ProcXIGetSelectedEvents() function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a different endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory values and then transmit them back to the client until encountering an unmapped page, resulting in a crash. Despite the attacker's inability to control the specific memory copied into the replies, the small length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds reads.(CVE-2024-31080)

A heap-based buffer over-read vulnerability was found in the X.org server's ProcXIPassiveGrabDevice() function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a different endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory values and then transmit them back to the client until encountering an unmapped page, resulting in a crash. Despite the attacker's inability to control the specific memory copied into the replies, the small length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds reads.(CVE-2024-31081)

Xwayland is an X server for running X clients under Wayland. %package devel Summary: Development package Requires: pkgconfig %description devel The development package provides the developmental files which are necessary for developing Wayland compositors using Xwayland. %prep %autosetup -n xwayland- %build %meson \ -Dxwayland_eglstream=true \ -Ddefault_font_path="catalogue:/etc/X11/fontpath.d,built-ins" \ -Dbuilder_string="Build ID: -" \ -Dxkb_output_dir=/lib/xkb \ -Dxcsecurity=true \ -Dglamor=true \ -Ddri3=true %meson_build

Security Fix(es):

A flaw was found in xorg-server. A specially crafted request to RRChangeProviderProperty or RRChangeOutputProperty can trigger an integer overflow which may lead to a disclosure of sensitive information.(CVE-2023-6478)

A flaw was found in X.Org server. Both DeviceFocusEvent and the XIQueryPointer reply contain a bit for each logical button currently down. Buttons can be arbitrarily mapped to any value up to 255, but the X.Org Server was only allocating space for the device's particular number of buttons, leading to a heap overflow if a bigger value was used.(CVE-2023-6816)

A flaw was found in the X.Org server. The GLX PBuffer code does not call the XACE hook when creating the buffer, leaving it unlabeled. When the client issues another request to access that resource (as with a GetGeometry) or when it creates another resource that needs to access that buffer, such as a GC, the XSELINUX code will try to use an object that was never labeled and crash because the SID is NULL.(CVE-2024-0408)

A heap-based buffer over-read vulnerability was found in the X.org server's ProcXIGetSelectedEvents() function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a different endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory values and then transmit them back to the client until encountering an unmapped page, resulting in a crash. Despite the attacker's inability to control the specific memory copied into the replies, the small length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds reads.(CVE-2024-31080)

A heap-based buffer over-read vulnerability was found in the X.org server's ProcXIPassiveGrabDevice() function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a different endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory values and then transmit them back to the client until encountering an unmapped page, resulting in a crash. Despite the attacker's inability to control the specific memory copied into the replies, the small length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds reads.(CVE-2024-31081)

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

Security Fix(es):

A flaw was found in xorg-server. A specially crafted request to RRChangeProviderProperty or RRChangeOutputProperty can trigger an integer overflow which may lead to a disclosure of sensitive information.(CVE-2023-6478)

A flaw was found in X.Org server. Both DeviceFocusEvent and the XIQueryPointer reply contain a bit for each logical button currently down. Buttons can be arbitrarily mapped to any value up to 255, but the X.Org Server was only allocating space for the device's particular number of buttons, leading to a heap overflow if a bigger value was used.(CVE-2023-6816)

A flaw was found in the X.Org server. The GLX PBuffer code does not call the XACE hook when creating the buffer, leaving it unlabeled. When the client issues another request to access that resource (as with a GetGeometry) or when it creates another resource that needs to access that buffer, such as a GC, the XSELINUX code will try to use an object that was never labeled and crash because the SID is NULL.(CVE-2024-0408)

A heap-based buffer over-read vulnerability was found in the X.org server's ProcXIGetSelectedEvents() function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a different endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory values and then transmit them back to the client until encountering an unmapped page, resulting in a crash. Despite the attacker's inability to control the specific memory copied into the replies, the small length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds reads.(CVE-2024-31080)

A heap-based buffer over-read vulnerability was found in the X.org server's ProcXIPassiveGrabDevice() function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a different endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory values and then transmit them back to the client until encountering an unmapped page, resulting in a crash. Despite the attacker's inability to control the specific memory copied into the replies, the small length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds reads.(CVE-2024-31081)

A heap-based buffer over-read vulnerability was found in the X.org server's ProcXIPassiveGrabDevice() function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a different endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory values and then transmit them back to the client until encountering an unmapped page, resulting in a crash. Despite the attacker's inability to control the specific memory copied into the replies, the small length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds reads.

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: Heap buffer overread/data leakage in ProcXIGetSelectedEvents (CVE-2024-31080)
• xorg-x11-server: Heap buffer overread/data leakage in ProcXIPassiveGrabDevice (CVE-2024-31081)
• xorg-x11-server: User-after-free in ProcRenderAddGlyphs (CVE-2024-31083)

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: Heap buffer overread/data leakage in ProcXIGetSelectedEvents (CVE-2024-31080)
• xorg-x11-server: Heap buffer overread/data leakage in ProcXIPassiveGrabDevice (CVE-2024-31081)
• xorg-x11-server: User-after-free in ProcRenderAddGlyphs (CVE-2024-31083)

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: Heap buffer overread/data leakage in ProcXIGetSelectedEvents (CVE-2024-31080)
• xorg-x11-server: Heap buffer overread/data leakage in ProcXIPassiveGrabDevice (CVE-2024-31081)
• xorg-x11-server: Use-after-free in ProcRenderAddGlyphs (CVE-2024-31083)

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: Heap buffer overread/data leakage in ProcXIGetSelectedEvents (CVE-2024-31080)
• xorg-x11-server: Heap buffer overread/data leakage in ProcXIPassiveGrabDevice (CVE-2024-31081)
• xorg-x11-server: Use-after-free in ProcRenderAddGlyphs (CVE-2024-31083)

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.

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

Security Fix(es):

• xorg-x11-server: Heap buffer overread/data leakage in ProcXIGetSelectedEvents (CVE-2024-31080)
• xorg-x11-server: Heap buffer overread/data leakage in ProcXIPassiveGrabDevice (CVE-2024-31081)
• xorg-x11-server: Use-after-free in ProcRenderAddGlyphs (CVE-2024-31083)

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.

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

Security Fix(es):

• xorg-x11-server: Heap buffer overread/data leakage in ProcXIGetSelectedEvents (CVE-2024-31080)
• xorg-x11-server: Heap buffer overread/data leakage in ProcXIPassiveGrabDevice (CVE-2024-31081)
• xorg-x11-server: Use-after-free in ProcRenderAddGlyphs (CVE-2024-31083)

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 AlmaLinux Release Notes linked from 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: Heap buffer overread/data leakage in ProcXIGetSelectedEvents (CVE-2024-31080)
• xorg-x11-server: Heap buffer overread/data leakage in ProcXIPassiveGrabDevice (CVE-2024-31081)
• xorg-x11-server: Use-after-free in ProcRenderAddGlyphs (CVE-2024-31083)

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 AlmaLinux Release Notes linked from the References section.

A heap-based buffer over-read vulnerability was found in the X.org server's ProcXIPassiveGrabDevice() function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a different endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory values and then transmit them back to the client until encountering an unmapped page, resulting in a crash. Despite the attacker's inability to control the specific memory copied into the replies, the small length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds reads.

A heap-based buffer over-read vulnerability was found in the X.org server's ProcXIPassiveGrabDevice() function. This issue occurs when byte-swapped length values are used in replies, potentially leading to memory leakage and segmentation faults, particularly when triggered by a client with a different endianness. This vulnerability could be exploited by an attacker to cause the X server to read heap memory values and then transmit them back to the client until encountering an unmapped page, resulting in a crash. Despite the attacker's inability to control the specific memory copied into the replies, the small length values typically stored in a 32-bit integer can result in significant attempted out-of-bounds reads.

• 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

• CVE-2023-1393: fix use-after-free in compositor overlay window by clearing dangling COW pointer
• CVE-2024-31080: prevent heap over-read in ProcXIGetSelectedEvents() caused by using byte-swapped length values in replies.
• CVE-2024-31081: fix buffer over-read in ProcXIPassiveGrabDevice by using correct unswapped length for replies
• CVE-2025-26600: fix use-after-free by clearing pending events when removing a frozen device

Heap buffer overread/data leakage in ProcXIGetSelectedEvents. (CVE-2024-31080) Heap buffer overread/data leakage in ProcXIPassiveGrabDevice. (CVE-2024-31081) User-after-free in ProcRenderAddGlyphs. (CVE-2024-31083)

These are all security issues fixed in the xorg-x11-server-21.1.12-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the xwayland-23.2.5-1.1 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: Heap buffer overread/data leakage in ProcXIGetSelectedEvents (CVE-2024-31080)

• xorg-x11-server: Heap buffer overread/data leakage in ProcXIPassiveGrabDevice (CVE-2024-31081)

• xorg-x11-server: User-after-free in ProcRenderAddGlyphs (CVE-2024-31083)

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: Heap buffer overread/data leakage in ProcXIGetSelectedEvents (CVE-2024-31080)

• xorg-x11-server: Heap buffer overread/data leakage in ProcXIPassiveGrabDevice (CVE-2024-31081)

• xorg-x11-server: Use-after-free in ProcRenderAddGlyphs (CVE-2024-31083)

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: Heap buffer overread/data leakage in ProcXIGetSelectedEvents (CVE-2024-31080)

• xorg-x11-server: Heap buffer overread/data leakage in ProcXIPassiveGrabDevice (CVE-2024-31081)

• xorg-x11-server: Use-after-free in ProcRenderAddGlyphs (CVE-2024-31083)

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.

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

Security Fix(es):

• xorg-x11-server: Heap buffer overread/data leakage in ProcXIGetSelectedEvents (CVE-2024-31080)

• xorg-x11-server: Heap buffer overread/data leakage in ProcXIPassiveGrabDevice (CVE-2024-31081)

• xorg-x11-server: Use-after-free in ProcRenderAddGlyphs (CVE-2024-31083)

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.

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

Security Fix(es):

• xorg-x11-server: Heap buffer overread/data leakage in ProcXIGetSelectedEvents (CVE-2024-31080)

• xorg-x11-server: Heap buffer overread/data leakage in ProcXIPassiveGrabDevice (CVE-2024-31081)

• xorg-x11-server: Use-after-free in ProcRenderAddGlyphs (CVE-2024-31083)

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 9.5 Release Notes linked from 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: Heap buffer overread/data leakage in ProcXIGetSelectedEvents (CVE-2024-31080)

• xorg-x11-server: Heap buffer overread/data leakage in ProcXIPassiveGrabDevice (CVE-2024-31081)

• xorg-x11-server: Use-after-free in ProcRenderAddGlyphs (CVE-2024-31083)

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 9.5 Release Notes linked from the References section.

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

• CVE-2024-31080: Fixed ProcXIGetSelectedEvents to use unswapped length (bsc#1222309).
• CVE-2024-31081: Fixed ProcXIPassiveGrabDevice to use unswapped length to send reply (bsc#1222310).
• CVE-2024-31082: Fixed ProcAppleDRICreatePixmap to use unswapped length to send reply (bsc#1222311).
• CVE-2024-31083: Fixed refcounting of glyphs during ProcRenderAddGlyphs (bsc#1222312).

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

• CVE-2024-31080: Fixed ProcXIGetSelectedEvents to use unswapped length (bsc#1222309).
• CVE-2024-31081: Fixed ProcXIPassiveGrabDevice to use unswapped length to send reply (bsc#1222310).
• CVE-2024-31082: Fixed ProcAppleDRICreatePixmap to use unswapped length to send reply (bsc#1222311).
• CVE-2024-31083: Fixed refcounting of glyphs during ProcRenderAddGlyphs (bsc#1222312).

Other fixes:

• Fixed regression for security fix for CVE-2024-31083 when using Android Studio (bnc#1222442)

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

• CVE-2024-31080: Fixed ProcXIGetSelectedEvents to use unswapped length (bsc#1222309).
• CVE-2024-31081: Fixed ProcXIPassiveGrabDevice to use unswapped length to send reply (bsc#1222310).
• CVE-2024-31082: Fixed ProcAppleDRICreatePixmap to use unswapped length to send reply (bsc#1222311).
• CVE-2024-31083: Fixed refcounting of glyphs during ProcRenderAddGlyphs (bsc#1222312).

Other fixes:

• Fixed regression for security fix for CVE-2024-31083 when using Android Studio (bnc#1222442)