Buffer overflow in Linux Kernel
CVE-2016-6516
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (59.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/torvalds/linux/commit/10eec60ce79187686e052092e5383c99b4420a20 (Patch)
- www.securityfocus.com/bid/92259 (vdb-entry)
- www.openwall.com/lists/oss-security/2016/07/31/6 (mailing-list, Release Notes)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch)
- bugzilla.redhat.com/show_bug.cgi (VDB Entry, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2016-6516?
- CVE-2016-6516 is a high-severity vulnerability in Linux Kernel, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.4/10. Published 2016-08-06.
- How severe is CVE-2016-6516?
- High severity. CVSS v3 base score is 7.4 out of 10.
- Is CVE-2016-6516 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.