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CVE-2013-7421

Published: 31 December 2013

The Crypto API in the Linux kernel before 3.18.5 allows local users to load arbitrary kernel modules via a bind system call for an AF_ALG socket with a module name in the salg_name field, a different vulnerability than CVE-2014-9644.

From the Ubuntu Security Team

A flaw was discovered in the automatic loading of modules in the crypto subsystem of the Linux kernel. A local user could exploit this flaw to load installed kernel modules, increasing the attack surface and potentially using this to gain administrative privileges.

Notes

AuthorNote
jdstrand
android kernels (flo, goldfish, grouper, maguro, mako and manta) are
not supported on the Ubuntu Touch 14.04 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 (3.19~rc6)
Patches:
Introduced by

03c8efc1ffeb6b82a22c1af8dd908af349563314

Fixed by 5d26a105b5a73e5635eae0629b42fa0a90e07b7b
Introduced by

03c8efc1ffeb6b82a22c1af8dd908af349563314

Fixed by 3e14dcf7cb80b34a1f38b55bc96f02d23fdaaaaf
linux-armadaxp
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-ec2
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-flo
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-fsl-imx51
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-gke
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-goldfish
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-grouper
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-hwe
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-hwe-edge
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-linaro-omap
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-linaro-shared
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-lts-quantal
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-lts-saucy
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-lts-utopic
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-lts-vivid
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-lts-wily
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-lts-xenial
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-maguro
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-mako
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-manta
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-mvl-dove
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-qcm-msm
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-raspi2
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-snapdragon
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)
linux-ti-omap4
Launchpad, Ubuntu, Debian
upstream
Released (3.19~rc6)