Xorg-x11-server: heap buffer overread/data leakage in procappledricreatepixmap

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H

缓冲区上溢读取

X.org server 安全漏洞

X.org Server是X.org基金会的一个开放源代码的自由软件。 X.org server存在安全漏洞，该漏洞源于ProcAppleDRICreatePixmap函数存在缓冲区溢出漏洞。

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