漏洞信息
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Vulnerability Title
7-Zip SquashFS Fragment Offset Overflow (GHSL-2026-116)
Vulnerability Description
7-Zip is a file archiver with a high compression ratio. Versions 9.34 through 26.00 contain a heap memory disclosure via SquashFS fragment offset integer overflow on 32-bit builds. 32-bit integer overflow in the SquashFS ReadBlock function allows an attacker-controlled node.Offset value to bypass the fragment bounds check, causing memcpy to read heap memory preceding the cache buffer into the extracted file. The vulnerability is exploitable only on 32-bit builds of 7-Zip where size_t is 32 bits, allowing the addition offsetInBlock + blockSize to wrap modulo 2³². On 64-bit builds the addition is promoted to 64 bits and the check correctly rejects the input. Version 26.01 patches the issue.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Vulnerability Type
跨界内存读
Vulnerability Title
7-Zip 缓冲区错误漏洞
Vulnerability Description
7-Zip是7-Zip开源的一个压缩软件。 7-Zip 9.34版本至26.00版本存在缓冲区错误漏洞,该漏洞源于SquashFS片段偏移整数溢出,可能导致攻击者控制的节点偏移值绕过片段边界检查,使memcpy读取缓存缓冲区前的堆内存到提取文件中。
CVSS Information
N/A
Vulnerability Type
N/A