Vulnerability Details : CVE-2017-16995

Public exploit exists!
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.
Published 2017-12-27 17:08:18
Updated 2023-01-19 15:48:42
Source Debian GNU/Linux
View at NVD,   CVE.org
Vulnerability category: OverflowMemory CorruptionDenial of service

Exploit prediction scoring system (EPSS) score for CVE-2017-16995

Probability of exploitation activity in the next 30 days: 0.05%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 15 % EPSS Score History EPSS FAQ

Metasploit modules for CVE-2017-16995

  • Linux BPF Sign Extension Local Privilege Escalation
    Disclosure Date: 2017-11-12
    First seen: 2020-04-26
    exploit/linux/local/bpf_sign_extension_priv_esc
    Linux kernel prior to 4.14.8 contains a vulnerability in the Berkeley Packet Filter (BPF) verifier. The `check_alu_op` function performs incorrect sign extension which allows the verifier to be bypassed, leading to arbitrary kernel read/write. The

CVSS scores for CVE-2017-16995

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
7.2
 HIGH AV:L/AC:L/Au:N/C:C/I:C/A:C
3.9
10.0
 NIST
7.8
 HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1.8
5.9
 NIST

CWE ids for CVE-2017-16995

References for CVE-2017-16995

Products affected by CVE-2017-16995

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