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CVE-2017-8797 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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

see all 26 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-129	Improper Validation of Array Index	[email protected]

Affected Products

Product	Versions
linux linux kernel	>= 4.0, < 4.1.40 >= 4.2, < 4.4.70 >= 4.5, < 4.9.30 >= 4.11, < 4.11.3
CPE cpe:2.3:o:linux:linux_kernel:::::::: Remediation No remediation found in references.

Change History

10 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
May 13, 2026	CVE Status Change	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Feb 3, 2023	Modified Analysis	[email protected]
Jan 5, 2018	CVE Modified	[email protected]
Dec 31, 2017	CVE Modified	[email protected]
Jul 13, 2017	Initial Analysis	[email protected]
Jul 7, 2017	CVE Modified	[email protected]
Jul 4, 2017	CVE Modified	[email protected]