Package : linux-2.6
Vulnerability : several
Problem-Type : local
Debian-specific: no
CVE ID : CVE-2007-3731 CVE-2007-3739 CVE-2007-3740 CVE-2007-4573
CVE-2007-4849
Several local and remote vulnerabilities have been discovered in the Linux
kernel that may lead to a denial of service or the execution of arbitrary
code. The Common Vulnerabilities and Exposures project identifies the
following problems:
CVE-2007-3731
Evan Teran discovered a potential local denial of service (oops) in
the handling of PTRACE_SETREGS and PTRACE_SINGLESTEP requests.
CVE-2007-3739
Adam Litke reported a potential local denial of service (oops) on
powerpc platforms resulting from unchecked VMA expansion into address
space reserved for hugetlb pages.
CVE-2007-3740
Steve French reported that CIFS filesystems with CAP_UNIX enabled
were not honoring a process' umask which may lead to unintentinally
relaxed permissions.
CVE-2007-4573
Wojciech Purczynski discovered a vulnerability that can be exploitd
by a local user to obtain superuser privileges on x86_64 systems.
This resulted from improper clearing of the high bits of registers
during ia32 system call emulation. This vulnerability is relevant
to the Debian amd64 port as well as users of the i386 port who run
the amd64 linux-image flavour.
CVE-2007-4849
Michael Stone reported an issue with the JFFS2 filesystem. Legacy
modes for inodes that were created with POSIX ACL support enabled
were not being written out to the medium, resulting in incorrect
permissions upon remount.
These problems have been fixed in the stable distribution in version
2.6.18.dfsg.1-13etch3.
We recommend that you upgrade your kernel package immediately and reboot
the machine. If you have built a custom kernel from the kernel source
package, you will need to rebuild to take advantage of these fixes.
Upgrade Instructions
- --------------------
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:
These files will probably be moved into the stable distribution on
its next update.
---------------------------------------------------------------------------------
For apt-get: deb http://security.debian.org/ etch/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/etch/updates/main
Mailing list: debian-security-announce@lists.debian.org
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>
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