What is CVE-2017-8797?

CVE-2017-8797 is a high-severity vulnerability in Linux Kernel, classified under Improper Validation of Array Index. CVSS score: 7.5/10. Published 2017-07-02.

How severe is CVE-2017-8797?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2017-8797 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Linux Kernel

CVE-2017-8797

The NFSv4 server in the Linux kernel before 4.11.3 does not properly validate the layout type when processing the NFSv4 pNFS GETDEVICEINFO or LAYOUTGET operand in a UDP packet from a remote attacker. This type value is uninitialized upon encountering certain error conditions. This value is used as an array index for dereferencing, which leads to an OOPS and eventually a DoS of knfsd and a soft-lockup of the whole system.

Published 2017-07-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.095 (95.3th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.087 · newest: 0.095 · change: +0.008

Affected products

Linux Kernel

Weakness classification (CWE)

CWE-129 — Improper Validation of Array Index

Public proof-of-concept exploits

bygregonline/devsec-fastapi-report

References

www.openwall.com/lists/oss-security/2017/06/27/5 (Patch, Mailing List, VDB Entry)
www.securitytracker.com/id/1038790 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
access.redhat.com/errata/RHSA-2017:2437 (vendor-advisory, Third Party Advisory)
github.com/torvalds/linux/commit/f961e3f2acae94b727380c0b74e2d3954d0edf79 (Patch, Third Party Advisory)
access.redhat.com/errata/RHSA-2017:2669 (vendor-advisory, Third Party Advisory)
bugzilla.redhat.com/show_bug.cgi (VDB Entry, Third Party Advisory, Issue Tracking)
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
github.com/torvalds/linux/commit/b550a32e60a4941994b437a8d662432a486235a5 (Patch, Third Party Advisory)
access.redhat.com/errata/RHSA-2017:2077 (vendor-advisory, Third Party Advisory)
www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.3 (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2017-8797?: CVE-2017-8797 is a high-severity vulnerability in Linux Kernel, classified under Improper Validation of Array Index. CVSS score: 7.5/10. Published 2017-07-02.
How severe is CVE-2017-8797?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2017-8797 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.