CVE-2017-7895

Published: 28 April 2017

The NFSv2 and NFSv3 server implementations in the Linux kernel through 4.10.13 lack certain checks for the end of a buffer, which allows remote attackers to trigger pointer-arithmetic errors or possibly have unspecified other impact via crafted requests, related to 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 check for the end of buffer. A remote attacker could use this to craft requests that cause a denial of service (system crash) or possibly execute arbitrary code.

Priority

Medium

CVSS 3 base score: 9.8

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
Patches:
Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Fixed by 13bf9fbff0e5e099e2b6f003a0ab8ae145436309
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-azure
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-euclid
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-gcp
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-kvm
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-lts-quantal
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-lts-saucy
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-oem
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)
linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (4.11)

Notes

AuthorNote
jdstrand
android kernels (flo, goldfish, grouper, maguro, mako and manta) are
not supported on the Ubuntu Touch 14.10 and earlier preview kernels
linux-lts-saucy no longer receives official support
linux-lts-quantal no longer receives official support

References