CVE-2026-12087— Socket versions before 2.041 for Perl have an out-of-bounds heap read

Socket versions before 2.041 for Perl have an out-of-bounds heap read

Socket versions before 2.041 for Perl have an out-of-bounds heap read. In Socket.xs, pack_ip_mreq_source() checks the length of its source argument before the argument is read, so the check tests the byte length carried over from the preceding multiaddr argument instead. Both addresses occupy a 4-byte field, so a valid multiaddr lets a source of any length pass the check, and the source is then copied into the 4-byte imr_sourceaddr field with a fixed-size copy. A source shorter than 4 bytes is not rejected, and the copy reads up to 3 bytes past the end of its buffer. Calling pack_ip_mreq_source() with a source value shorter than 4 bytes copies adjacent heap memory into the returned packed structure.

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跨界内存读

PEVANS Socket 缓冲区错误漏洞

PEVANS Socket是PEVANS个人开发者的一个消息队列中间件。 PEVANS Socket 2.041之前版本存在缓冲区错误漏洞，该漏洞源于对pack_ip_mreq_source()函数中source参数的长度检查错误，导致越界堆读取。

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