CVE-2017-8797

HIGH

Linux Kernel < 4.1.40 - Improper Array Index Validation

Title source: rule
STIX 2.1

Description

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.

References (13)

Core 13
Core References
Mailing List, Patch, VDB Entry x_refsource_misc
http://www.openwall.com/lists/oss-security/2017/06/27/5
Broken Link, Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1038790
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:2437
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:2669
Issue Tracking, Third Party Advisory, VDB Entry x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=1466329
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:2077
Release Notes, Vendor Advisory x_refsource_misc
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.3
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:1842
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/99298

Scores

CVSS v3 7.5
EPSS 0.3042
EPSS Percentile 96.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-129
Status published
Products (1)
linux/linux_kernel 4.0 - 4.1.40
Published Jul 02, 2017
Tracked Since Feb 18, 2026