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Vulnerability record · CVE-2017-8797 · published 2 July 2017

CVE-2017-8797: Linux kernel vulnerability

Linux · Linux Kernel

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.

7.5 CVSS 3.1 High EPSS 9.5% · top 4.7% CWE-129 · CWE-129
7.5CVSS 3.1 base score, v2 7.8
9.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
26References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b550a32e60a4941994b437a8d662432a486235a5 PatchVendor Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f961e3f2acae94b727380c0b74e2d3954d0edf79 PatchVendor Advisory
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.3 Release NotesVendor Advisory
http://www.openwall.com/lists/oss-security/2017/06/27/5 Mailing ListPatchVDB Entry
http://www.securityfocus.com/bid/99298 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038790 Broken LinkThird Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2017:1842 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2077 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2437 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2669 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1466329 Issue TrackingThird Party AdvisoryVDB Entry
https://github.com/torvalds/linux/commit/b550a32e60a4941994b437a8d662432a486235a5 PatchThird Party Advisory
https://github.com/torvalds/linux/commit/f961e3f2acae94b727380c0b74e2d3954d0edf79 PatchThird Party Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b550a32e60a4941994b437a8d662432a486235a5 PatchVendor Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f961e3f2acae94b727380c0b74e2d3954d0edf79 PatchVendor Advisory
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.3 Release NotesVendor Advisory
http://www.openwall.com/lists/oss-security/2017/06/27/5 Mailing ListPatchVDB Entry
http://www.securityfocus.com/bid/99298 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038790 Broken LinkThird Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2017:1842 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2077 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2437 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2669 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1466329 Issue TrackingThird Party AdvisoryVDB Entry
https://github.com/torvalds/linux/commit/b550a32e60a4941994b437a8d662432a486235a5 PatchThird Party Advisory
https://github.com/torvalds/linux/commit/f961e3f2acae94b727380c0b74e2d3954d0edf79 PatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2017-8797), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.