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CVE-2016-1886 is an integer signedness error in the genkbd_commonioctl function in sys/dev/kbd/kbd.c in FreeBSD versions 9.3 before p42, 10.1 before p34, 10.2 before p17, and 10.3 before p3. The vulnerability is triggered by passing a negative value in the flen member of the arg structure to the SETFKEY ioctl call. This leads to a two-way heap and stack overflow, potentially allowing local users to read sensitive kernel memory, cause a denial of service via kernel crash, or escalate privileges.
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Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
1 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.