CVE-2016-6516 (NVD)

2016-08-06

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.

Products Linux_kernel
Type Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119)
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') (CWE-362)
First patch https://github.com/torvalds/linux/commit/10eec60ce79187686e052092e5383c99b4420a20
Relevant file/s ./fs/ioctl.c (modified, +1)
Links http://www.openwall.com/lists/oss-security/2016/07/31/6
https://bugzilla.redhat.com/show_bug.cgi?id=1362457
http://www.securityfocus.com/bid/92259
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=10eec60ce79187686e052092e5383c99b4420a20

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