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udev: Multiple vulnerabilities


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200904-18 / udev
Release Date April 18, 2009
Latest Revision April 18, 2009: 01
Impact high
Exploitable local
Package Vulnerable versions Unaffected versions Architecture(s)
sys-fs/udev < 124-r2 >= 124-r2 All supported architectures

Related bugreports: #266290


Two errors in udev allow for a local root compromise and a Denial of Service.

2.  Impact Information


udev is the device manager used in the Linux 2.6 kernel series.


Sebastian Krahmer of SUSE discovered the following two vulnerabilities:

  • udev does not verify the origin of NETLINK messages properly (CVE-2009-1185).
  • A buffer overflow exists in the util_path_encode() function in lib/libudev-util.c (CVE-2009-1186).


A local attacker could gain root privileges by sending specially crafted NETLINK messages to udev or cause a Denial of Service.

3.  Resolution Information


There is no known workaround at this time.


All udev users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-fs/udev-124-r2"

4.  References


Page updated April 18, 2009

Summary: This is a Gentoo Linux Security Advisory

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