CVE-2017-7645
Published: 18 April 2017
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.
From the Ubuntu Security Team
Tuomas Haanpää and Ari Kauppi discovered that the NFSv2 and NFSv3 server implementations in the Linux kernel did not properly handle certain long RPC replies. A remote attacker could use this to cause a denial of service (system crash).
Priority
Status
| Package | Release | Status |
|---|---|---|
|
linux Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Not vulnerable
(4.13.0-16.19)
|
|
| artful |
Not vulnerable
(4.10.0-22.24)
|
|
| cosmic |
Not vulnerable
(4.15.0-20.21)
|
|
| trusty |
Released
(3.13.0-157.207)
|
|
| xenial |
Released
(4.4.0-79.100)
|
|
| yakkety |
Ignored
(end of life)
|
|
| zesty |
Released
(4.10.0-22.24)
|
|
| precise |
Ignored
(end of life)
|
|
|
Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
||
|
linux-linaro-omap Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| precise |
Ignored
(end of life)
|
|
|
linux-linaro-shared Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| precise |
Ignored
(end of life)
|
|
|
linux-linaro-vexpress Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| precise |
Ignored
(end of life)
|
|
|
linux-qcm-msm Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| precise |
Ignored
(end of life)
|
|
|
linux-armadaxp Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| precise |
Ignored
(end of life)
|
|
| This package is not directly supported by the Ubuntu Security Team | ||
|
linux-lts-quantal Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| precise |
Ignored
(end of life)
|
|
| This package is not directly supported by the Ubuntu Security Team | ||
|
linux-lts-raring Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| precise |
Ignored
(end of life)
|
|
|
linux-lts-saucy Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| precise |
Ignored
(end of life)
|
|
| This package is not directly supported by the Ubuntu Security Team | ||
|
linux-lts-trusty Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| precise |
Ignored
(end of life)
|
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| xenial |
Ignored
(abandoned)
|
|
| yakkety |
Ignored
(end of life)
|
|
| zesty |
Ignored
(end of life)
|
|
|
linux-grouper Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-maguro Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-mako Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| xenial |
Ignored
(abandoned)
|
|
| yakkety |
Ignored
(end of life)
|
|
| zesty |
Does not exist
|
|
|
linux-manta Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-flo Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored)
|
|
| xenial |
Ignored
(abandoned)
|
|
| yakkety |
Ignored
(end of life)
|
|
| zesty |
Does not exist
|
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Ignored
(end of life, was needed)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Released
(4.4.0-79.100~14.04.1)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-aws Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Not vulnerable
(4.15.0-1001.1)
|
|
| artful |
Does not exist
|
|
| cosmic |
Not vulnerable
(4.15.0-1007.7)
|
|
| precise |
Does not exist
|
|
| trusty |
Not vulnerable
(4.4.0-1002.2)
|
|
| xenial |
Released
(4.4.0-1018.27)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-hwe Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Not vulnerable
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Released
(4.10.0-27.30~16.04.2)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Not vulnerable
(4.18.0-8.9~18.04.1)
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Released
(4.10.0-27.30~16.04.2)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-gke Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Released
(4.4.0-1014.14)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-azure Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Not vulnerable
(4.15.0-1002.2)
|
|
| artful |
Does not exist
|
|
| cosmic |
Not vulnerable
(4.15.0-1009.9)
|
|
| trusty |
Not vulnerable
(4.15.0-1023.24~14.04.1)
|
|
| xenial |
Not vulnerable
(4.11.0-1009.9)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-gcp Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Not vulnerable
(4.15.0-1001.1)
|
|
| artful |
Does not exist
|
|
| cosmic |
Not vulnerable
(4.15.0-1006.6)
|
|
| trusty |
Does not exist
|
|
| xenial |
Not vulnerable
(4.10.0-1004.4)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-kvm Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Not vulnerable
(4.15.0-1002.2)
|
|
| artful |
Does not exist
|
|
| cosmic |
Not vulnerable
(4.15.0-1008.8)
|
|
| trusty |
Does not exist
|
|
| xenial |
Not vulnerable
(4.4.0-1004.9)
|
|
| zesty |
Does not exist
|
|
|
linux-euclid Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Ignored
(was needed ESM criteria)
|
|
| zesty |
Does not exist
|
|
|
linux-azure-edge Launchpad, Ubuntu, Debian |
upstream |
Released
(4.11)
|
| bionic |
Not vulnerable
(4.18.0-1003.3~18.04.1)
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Not vulnerable
(4.15.0-1002.2)
|
|
|
linux-oem Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Not vulnerable
(4.15.0-1002.3)
|
|
| cosmic |
Not vulnerable
(4.15.0-1004.5)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.11)
|
|
| xenial |
Not vulnerable
(4.13.0-1008.9)
|
|
| zesty |
Does not exist
|
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(4.10.0-1006.8)
|
| bionic |
Not vulnerable
(4.13.0-1005.5)
|
|
| cosmic |
Not vulnerable
(4.15.0-1010.11)
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.11)
|
|
| xenial |
Released
(4.4.0-1057.64)
|
|
| yakkety |
Ignored
(end of life)
|
|
| zesty |
Released
(4.10.0-1006.8)
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(4.4.0-1059.63)
|
| bionic |
Not vulnerable
|
|
| cosmic |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.11)
|
|
| xenial |
Released
(4.4.0-1059.63)
|
|
| yakkety |
Released
(4.4.0-1059.63)
|
|
| zesty |
Released
(4.4.0-1059.63)
|
|
|
linux-ti-omap4 Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.11)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
| precise |
Ignored
(end of life)
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7645
- https://marc.info/?l=linux-nfs&m=149218228327497&w=2
- https://marc.info/?l=linux-nfs&m=149247516212924&w=2
- https://github.com/torvalds/linux/commit/e6838a29ecb484c97e4efef9429643b9851fba6e
- https://github.com/torvalds/linux/commit/db44bac41bbfc0c0d9dd943092d8bded3c9db19b
- https://github.com/torvalds/linux/commit/13bf9fbff0e5e099e2b6f003a0ab8ae145436309
- https://ubuntu.com/security/notices/USN-3314-1
- https://ubuntu.com/security/notices/USN-3312-1
- https://ubuntu.com/security/notices/USN-3312-2
- https://ubuntu.com/security/notices/USN-3361-1
- https://ubuntu.com/security/notices/USN-3754-1
- NVD
- Launchpad
- Debian