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CVE-2015-0275

Published: 23 February 2015

The ext4_zero_range function in fs/ext4/extents.c in the Linux kernel before 4.1 allows local users to cause a denial of service (BUG) via a crafted fallocate zero-range request.

From the Ubuntu security team

Xiong Zhou discovered a bug in the way the EXT4 filesystem handles fallocate zero range functionality when the page size is greater than the block size. A local attacker could exploit this flaw to cause a denial of service (system crash).

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
Priority

Medium

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
Patches:
Introduced by

b8a8684502a0fc852afa0056c6bb2a9273f6fcc0

Fixed by 0f2af21aae11972fa924374ddcf52e88347cf5a8
linux-armadaxp
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-ec2
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-flo
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-gke
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-goldfish
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-grouper
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-hwe
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-linaro-omap
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-linaro-shared
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-lts-quantal
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-lts-saucy
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-lts-utopic
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-lts-vivid
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-lts-wily
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-lts-xenial
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-maguro
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-mako
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-manta
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-mvl-dove
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-qcm-msm
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-raspi2
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-snapdragon
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)
linux-ti-omap4
Launchpad, Ubuntu, Debian
upstream
Released (4.1~rc1)