Double Fetch Vulnerability in Linux Kernel's ioctl_file_dedupe_range Function

CVE-2016-6516 · MEDIUM Severity

AV:L/AC:M/AU:N/C:P/I:P/A:P

Race condition in the ioctl_file_dedupe_range function in fs/ioctl.c in the Linux kernel through 4.7 allows local users to cause a denial of service (heap-based buffer overflow) or possibly gain privileges by changing a certain count value, aka a "double fetch" vulnerability.

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