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CVE-2017-8797

HIGH
7.5
CVSS Score
Published: July 2, 2017 at 05:00 PM UTC
Updated: June 17, 2026 at 01:26 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.5
Exploit prediction
EPSS 9%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
4.0 ≤ v < 4.1.404.11 ≤ v < 4.11.34.2 ≤ v < 4.4.704.5 ≤ v < 4.9.30
Affected range stops below 4.1.40, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.11.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.4.70, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.9.30, so it looks safe — our inference, not a vendor statement

References (13)

x_refsource_MISCPatchVendor Advisory
Source: [email protected]
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b550a32e60a4941994b437a8d662432a486235a5
x_refsource_MISCPatchVendor Advisory
Source: [email protected]
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f961e3f2acae94b727380c0b74e2d3954d0edf79
x_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.11.3
x_refsource_MISCMailing ListPatchVDB Entry
Source: [email protected]
http://www.openwall.com/lists/oss-security/2017/06/27/5
VDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/99298
VDB Entryx_refsource_SECTRACKBroken LinkThird Party Advisory
Source: [email protected]
http://www.securitytracker.com/id/1038790
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2017:1842
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2017:2077

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-129

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