CVE-2017-16995

Status: ModifiedHigh (7.8)—💥 Exploit

The check_alu_op function in kernel/bpf/verifier.c in the Linux kernel through 4.4 allows local users to cause a denial of service (memory corruption) or possibly have unspecified other impact by leveraging incorrect sign extension.

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base score: 7.8

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 30%
Percentile among all scored CVEs: 98
Score date: 10/11/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

Metasploit module (reliable, widely available exploit) · Linux BPF Sign Extension Local Privilege Escalation
Published on Exploit-DB · Linux - BPF Sign Extension Local Privilege Escalation (Metasploit) (7/19/2018)
Published on Exploit-DB · Linux Kernel < 4.13.9 (Ubuntu 16.04 / Fedora 27) - Local Privilege Escalation (7/10/2018)
Published on Exploit-DB · Linux Kernel < 4.4.0-116 (Ubuntu 16.04.4) - Local Privilege Escalation (3/16/2018)
Proof of concept on GitHub (unverified) · List of proofs of concept on GitHub

⚠️ GitHub proofs of concept are not verified: some are fake or contain malware. Never run them outside an isolated lab.

Affected technologies (3)

Canonical — Ubuntu Linux Debian — Debian Linux Linux — Linux Kernel

CWEs

CWE-119

References

Raw JSON (NVD)

Show

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