CVE-2026-57451— Vim 缓冲区错误漏洞

Vim: Out-of-bounds Read in Text Property Count

Vim is an open source, command line text editor. Prior to 9.2.0670, get_text_props() in src/textprop.c reads a uint16 property count stored inline after a line's text and returns it as the number of 32-byte textprop_T entries that follow. The only check is a floor that guarantees room for a single entry; the count is never checked against the amount of data actually present. A line that declares a large count while carrying little data causes consumers to read far past the end of the line buffer. Such a line can be delivered through a crafted undo file, leading to a crash. This vulnerability is fixed in 9.2.0670.

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

跨界内存读

Vim 缓冲区错误漏洞

Vim是Vim组织开源的一款跨平台的文本编辑器。 Vim 9.2.0670之前版本存在缓冲区错误漏洞，该漏洞源于get_text_props()函数对属性计数未验证实际数据量，可能导致越界读取，进而在通过特制撤销文件触发时造成程序崩溃。

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