CVE-2017-7645

Name: CVE-2017-7645
Creator: NVD / NIST
Published: 2017-04-18T14:59:00.213+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 5.79%

Last modified Jun 17, 2026

CVE-2017-7645 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The NFSv2/NFSv3 server in the nfsd subsystem in the Linux kernel through 4.10.11 allows remote attackers to cause a denial of service (system crash) via a long RPC reply, related to net/sunrpc/svc.c, fs/nfsd/nfs3xdr.c, and fs/nfsd/nfsxdr.c.. EPSS estimates a 5.79% chance of exploitation in the next 30 days.

Description

The NFSv2/NFSv3 server in the nfsd subsystem in the Linux kernel through 4.10.11 allows remote attackers to cause a denial of service (system crash) via a long RPC reply, related to net/sunrpc/svc.c, fs/nfsd/nfs3xdr.c, and fs/nfsd/nfsxdr.c.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

5.79%

92.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	< 3.2.89
Linux	Linux Kernel	>= 3.3, < 3.10.107
Linux	Linux Kernel	>= 3.11, < 3.12.74
Linux	Linux Kernel	>= 3.13, < 3.16.44
Linux	Linux Kernel	>= 3.17, < 3.18.52
Linux	Linux Kernel	>= 3.19, < 4.1.40
Linux	Linux Kernel	>= 4.2, < 4.4.66
Linux	Linux Kernel	>= 4.5, < 4.9.26
Linux	Linux Kernel	>= 4.10, < 4.10.14
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Canonical	Ubuntu Linux	14.04

References

http://www.debian.org/security/2017/dsa-3886Third Party Advisory
http://www.securityfocus.com/bid/97950Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2017:1615Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:1616Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:1647Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1319Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e6838a29ecb484c97e4efef9429643b9851fba6eVendor Advisory
https://github.com/torvalds/linux/commit/e6838a29ecb484c97e4efef9429643b9851fba6ePatch, Third Party Advisory
https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0Third Party Advisory
https://marc.info/?l=linux-nfs&m=149218228327497&w=2Mailing List, Patch, Third Party Advisory
https://marc.info/?l=linux-nfs&m=149247516212924&w=2Mailing List, Patch, Third Party Advisory
https://usn.ubuntu.com/3754-1/Third Party Advisory
http://www.debian.org/security/2017/dsa-3886Third Party Advisory
http://www.securityfocus.com/bid/97950Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2017:1615Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:1616Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:1647Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1319Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e6838a29ecb484c97e4efef9429643b9851fba6eVendor Advisory
https://github.com/torvalds/linux/commit/e6838a29ecb484c97e4efef9429643b9851fba6ePatch, Third Party Advisory
https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0Third Party Advisory
https://marc.info/?l=linux-nfs&m=149218228327497&w=2Mailing List, Patch, Third Party Advisory
https://marc.info/?l=linux-nfs&m=149247516212924&w=2Mailing List, Patch, Third Party Advisory
https://usn.ubuntu.com/3754-1/Third Party Advisory

Timeline

Published: Apr 18, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-7645?

How severe is CVE-2017-7645?

CVE-2017-7645 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 5.79% probability of exploitation in the next 30 days.

How do I fix CVE-2017-7645?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-7645?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST