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Debian Security Advisory DSA-1996-1 [email protected] http://www.debian.org/security/ dann frazier
February 12, 2010 http://www.debian.org/security/faq
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Package : linux-2.6
Vulnerability : privilege escalation/denial of service/sensitive memory leak Problem type : local/remote
Debian-specific: no
CVE Id(s) : CVE-2009-3939 CVE-2009-4027 CVE-2009-4536 CVE-2009-4538
CVE-2010-0003 CVE-2010-0007 CVE-2010-0291 CVE-2010-0298
CVE-2010-0306 CVE-2010-0307 CVE-2010-0309 CVE-2010-0410
CVE-2010-0415

Several vulnerabilities have been discovered in the Linux kernel that
may lead to a denial of service, sensitive memory leak or privilege
escalation. The Common Vulnerabilities and Exposures project
identifies the following problems:

CVE-2009-3939

Joseph Malicki reported that the dbg_lvl sysfs attribute for the
megaraid_sas device driver had world-writable permissions,
permitting local users to modify logging settings.

CVE-2009-4027

Lennert Buytenhek reported a race in the mac80211 subsystem that
may allow remote users to cause a denial of service (system crash)
on a system connected to the same wireless network.

CVE-2009-4536 & CVE-2009-4538

Fabian Yamaguchi reported issues in the e1000 and e1000e drivers
for Intel gigabit network adapters which allow remote users to
bypass packet filters using specially crafted ethernet frames.

CVE-2010-0003

Andi Kleen reported a defect which allows local users to gain read
access to memory reachable by the kernel when the
print-fatal-signals option is enabled. This option is disabled by
default.

CVE-2010-0007

Florian Westphal reported a lack of capability checking in the
ebtables netfilter subsystem. If the ebtables module is loaded,
local users can add and modify ebtables rules.

CVE-2010-0291

Al Viro reported several issues with the mmap/mremap system calls
that allow local users to cause a denial of service (system panic)
or obtain elevated privileges.

CVE-2010-0298 & CVE-2010-0306

Gleb Natapov discovered issues in the KVM subsystem where missing
permission checks (CPL/IOPL) permit a user in a guest system to
denial of service a guest (system crash) or gain escalated
privileges with the guest.

CVE-2010-0307

Mathias Krause reported an issue with the load_elf_binary code on
the amd64 flavor kernels that allows local users to cause a denial
of service (system crash).

CVE-2010-0309

Marcelo Tosatti fixed an issue in the PIT emulation code in the
KVM subsystem that allows privileged users in a guest domain to
cause a denial of service (crash) of the host system.

CVE-2010-0410

Sebastian Krahmer discovered an issue in the netlink connector
subsystem that permits local users to allocate large amounts of
system memory resulting in a denial of service (out of memory).

CVE-2010-0415

Ramon de Carvalho Valle discovered an issue in the sys_move_pages
interface, limited to amd64, ia64 and powerpc64 flavors in Debian.
Local users can exploit this issue to cause a denial of service
(system crash) or gain access to sensitive kernel memory.

For the stable distribution (lenny), this problem has been fixed in
version 2.6.26-21lenny3.

For the oldstable distribution (etch), these problems, where
applicable, will be fixed in updates to linux-2.6 and linux-2.6.24.

We recommend that you upgrade your linux-2.6 and user-mode-linux
packages.

Note: Debian carefully tracks all known security issues across every
linux kernel package in all releases under active security support.
However, given the high frequency at which low-severity security
issues are discovered in the kernel and the resource requirements of
doing an update, updates for lower priority issues will normally not
be released for all kernels at the same time. Rather, they will be
released in a staggered or "leap-frog" fashion.

The following matrix lists additional source packages that were
rebuilt for compatibility with or to take advantage of this update:

Debian 5.0 (lenny)
user-mode-linux 2.6.26-1um-2+21lenny3

Upgrade instructions
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wget url
will fetch the file for you
dpkg -i file.deb
will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
will update the internal database
apt-get upgrade
will install corrected packages

You may use an automated update by adding the resources from the
footer to the proper configuration.

Debian GNU/Linux 5.0 alias lenny
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Stable updates are available for alpha, amd64, arm, armel, hppa, i386, ia64, mips, mipsel, powerpc, s390 and sparc.

Source archives:

http://security.debian.org/pool/updates/main/l/linux-2.6/linux-2.6_2.6.26-21lenny2.diff.gz
Size/MD5 checksum: 7743374 ab69790fa702dc6902a48328ed655e17
http://security.debian.org/pool/updates/main/l/linux-2.6/linux-2.6_2.6.26-21lenny1.dsc
Size/MD5 checksum: 5778 5a4c27a374c304a0f727a6bc8ca107f3
http://security.debian.org/pool/updates/main/l/linux-2.6/linux-2.6_2.6.26.orig.tar.gz
Size/MD5 checksum: 61818969 85e039c2588d5bf3cb781d1c9218bbcb
http://security.debian.org/pool/updates/main/l/linux-2.6/linux-2.6_2.6.26-21lenny1.diff.gz
Size/MD5 checksum: 7739467 c8cd3620be097861ec74ba95738bf627
http://security.debian.org/pool/updates/main/l/linux-2.6/linux-2.6_2.6.26-21lenny2.dsc
Size/MD5 checksum: 5778 71b62f2c2ce9bf12c5c8c7b1aead68a2
http://security.debian.org/pool/updates/main/l/linux-2.6/linux-2.6_2.6.26-21lenny3.diff.gz
Size/MD5 checksum: 7763646 65572787e140a954f0b5cbc00ce52038
http://security.debian.org/pool/updates/main/l/linux-2.6/linux-2.6_2.6.26-21lenny3.dsc
Size/MD5 checksum: 5778 3de1d44da4b4d993a2662b458bac2141

Architecture independent packages:


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