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FreeBSD Kernel amd64_set_ldt Heap Overflow
Posted Mar 17, 2016
Authored by Core Security Technologies, Francisco Falcon

Core Security Technologies Advisory - An integer signedness error has been found in the amd64_set_ldt() function in the FreeBSD kernel code (define d in the /sys/amd64/amd64/sys_machdep.c file), which implements the i386_set_ldt system call on the amd64 version of the OS. This integer signedness issue ultimately leads to a heap overflow in the kernel, allowing local unprivileged attackers to crash the system. FreeBSD 10.2 amd64 is affected.

tags | exploit, overflow, kernel
systems | freebsd, bsd
advisories | CVE-2016-1885
SHA-256 | d41fcb2fcfd845b70a122e20b1cbd17e3b183211e307eaf35331480595a9fc22

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