HCE2-SA-2024-0149 Important HCE 2.0 Security Fix(es): 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) 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) HCE 2.0 xorg-x11-server-1.20.11-4.r14.hce2.aarch64.rpm xorg-x11-server-common-1.20.11-4.r14.hce2.aarch64.rpm xorg-x11-server-devel-1.20.11-4.r14.hce2.aarch64.rpm xorg-x11-server-help-1.20.11-4.r14.hce2.noarch.rpm xorg-x11-server-source-1.20.11-4.r14.hce2.noarch.rpm xorg-x11-server-Xdmx-1.20.11-4.r14.hce2.aarch64.rpm xorg-x11-server-Xephyr-1.20.11-4.r14.hce2.aarch64.rpm xorg-x11-server-Xnest-1.20.11-4.r14.hce2.aarch64.rpm xorg-x11-server-Xvfb-1.20.11-4.r14.hce2.aarch64.rpm xorg-x11-server-1.20.11-4.r14.hce2.x86_64.rpm xorg-x11-server-common-1.20.11-4.r14.hce2.x86_64.rpm xorg-x11-server-devel-1.20.11-4.r14.hce2.x86_64.rpm xorg-x11-server-Xdmx-1.20.11-4.r14.hce2.x86_64.rpm xorg-x11-server-Xephyr-1.20.11-4.r14.hce2.x86_64.rpm xorg-x11-server-Xnest-1.20.11-4.r14.hce2.x86_64.rpm xorg-x11-server-Xvfb-1.20.11-4.r14.hce2.x86_64.rpm