CVE-2017-16995
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…
- 7.8HighCVSS base score
- 30.1%Exploitation in 30 daysEPSS · top 1.8% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 4Public exploitsMetasploit, Nuclei and Exploit-DB
Description
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list a Metasploit module and 3 Exploit-DB entries for it. 3 references of the record are tagged as an exploit.
Show the exploits7
Metasploit modules1 module
- Linux BPF Sign Extension Local Privilege Escalation (Metasploit module) (opens in a new tab)
exploit/linux/local/bpf_sign_extension_priv_escRank greatdisclosed 12 Nov 2017
Exploit-DB3 entries
- Linux - BPF Sign Extension Local Privilege Escalation (Metasploit) (Exploit-DB entry) (opens in a new tab)
EDB-ID 45058local, linuxpublished 19 Jul 2018Verified
- Linux Kernel < 4.13.9 (Ubuntu 16.04 / Fedora 27) - Local Privilege Escalation (Exploit-DB entry) (opens in a new tab)
EDB-ID 45010local, linuxpublished 10 Jul 2018Verified
- Linux Kernel < 4.4.0-116 (Ubuntu 16.04.4) - Local Privilege Escalation (Exploit-DB entry) (opens in a new tab)
EDB-ID 44298local, linuxpublished 16 Mar 2018Not verified
References tagged exploit3 references
- 45058 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- 44298 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- 45010 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By debian
- 25 days later
· 25 days later
Published
- 7 years later
· 7 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 30.1% · top 1.8% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
n/a
- affected through 4.4
References
14
- 45058 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- https://github.com/torvalds/linux/commit/95a762e2c8c942780948091f8f2a4f32fce1ac6f (opens in a new tab)x_refsource_MISCx_transferred
- USN-3619-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1454 (opens in a new tab)x_refsource_MISCx_transferred
- USN-3633-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- 102288 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 44298 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- 45010 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- DSA-4073 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- USN-3523-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- http://openwall.com/lists/oss-security/2017/12/21/2 (opens in a new tab)x_refsource_MISCx_transferred
- USN-3619-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=95a762e2c8c942780948091f8f2a4f32fce1ac6f (opens in a new tab)x_refsource_MISCx_transferred
- https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=a6132276ab5dcc38b3299082efeb25b948263adb (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2017-8163 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2017-16995)Record last updated .