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USN-578-1: Linux kernel vulnerabilities

14 February 2008

Linux kernel vulnerabilities

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Releases

Packages

Details

The minix filesystem did not properly validate certain filesystem
values. If a local attacker could trick the system into attempting
to mount a corrupted minix filesystem, the kernel could be made to
hang for long periods of time, resulting in a denial of service.
(CVE-2006-6058)

Alexander Schulze discovered that the skge driver does not properly
use the spin_lock and spin_unlock functions. Remote attackers could
exploit this by sending a flood of network traffic and cause a denial
of service (crash). (CVE-2006-7229)

Hugh Dickins discovered that hugetlbfs performed certain prio_tree
calculations using HPAGE_SIZE instead of PAGE_SIZE. A local user
could exploit this and cause a denial of service via kernel panic.
(CVE-2007-4133)

Chris Evans discovered an issue with certain drivers that use the
ieee80211_rx function. Remote attackers could send a crafted 802.11
frame and cause a denial of service via crash. (CVE-2007-4997)

Alex Smith discovered an issue with the pwc driver for certain webcam
devices. A local user with physical access to the system could remove
the device while a userspace application had it open and cause the USB
subsystem to block. (CVE-2007-5093)

Scott James Remnant discovered a coding error in ptrace. Local users
could exploit this and cause the kernel to enter an infinite loop.
(CVE-2007-5500)

Venustech AD-LAB discovered a buffer overflow in the isdn net
subsystem. This issue is exploitable by local users via crafted input
to the isdn_ioctl function. (CVE-2007-6063)

It was discovered that the isdn subsystem did not properly check for
NULL termination when performing ioctl handling. A local user could
exploit this to cause a denial of service. (CVE-2007-6151)

Blake Frantz discovered that when a root process overwrote an existing
core file, the resulting core file retained the previous core file's
ownership. Local users could exploit this to gain access to sensitive
information. (CVE-2007-6206)

Hugh Dickins discovered the when using the tmpfs filesystem, under
rare circumstances, a kernel page may be improperly cleared. A local
user may be able to exploit this and read sensitive kernel data or
cause a denial of service via crash. (CVE-2007-6417)

Bill Roman discovered that the VFS subsystem did not properly check
access modes. A local user may be able to gain removal privileges
on directories. (CVE-2008-0001)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 6.06

After a standard system upgrade you need to reboot your computer to
effect the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-386,
linux-powerpc, linux-amd64-generic), a standard system upgrade will
automatically perform this as well.

Related notices

  • USN-574-1: linux-image-2.6.17-12-hppa32, linux-source-2.6.22, linux-image-2.6.20-16-server-bigiron, linux-image-2.6.20-16-hppa64, linux-image-2.6.20-16-mckinley, linux-image-2.6.20-16-sparc64-smp, linux-image-2.6.22-14-cell, linux-image-2.6.20-16-lowlatency, linux-source-2.6.17, linux-image-2.6.17-12-server, linux-image-2.6.22-14-generic, linux-image-2.6.17-12-generic, linux-image-2.6.17-12-sparc64, linux-image-2.6.20-16-hppa32, linux-image-2.6.17-12-386, linux-image-2.6.22-14-server, linux-image-2.6.17-12-itanium, linux-image-2.6.22-14-xen, linux-image-2.6.22-14-rt, linux-image-2.6.17-12-powerpc, linux-image-2.6.22-14-powerpc64-smp, linux-image-2.6.22-14-powerpc, linux-image-2.6.22-14-sparc64, linux-image-2.6.20-16-generic, linux-image-2.6.22-14-ume, linux-image-2.6.17-12-sparc64-smp, linux-image-2.6.22-14-lpiacompat, linux-image-2.6.17-12-powerpc-smp, linux-image-2.6.22-14-hppa32, linux-image-2.6.20-16-powerpc-smp, linux-image-2.6.22-14-hppa64, linux-source-2.6.20, linux-image-2.6.17-12-server-bigiron, linux-image-2.6.20-16-powerpc64-smp, linux-image-2.6.20-16-powerpc, linux-image-2.6.22-14-lpia, linux-image-2.6.22-14-mckinley, linux-image-2.6.22-14-powerpc-smp, linux-image-2.6.20-16-server, linux-image-2.6.20-16-itanium, linux-image-2.6.22-14-386, linux-image-2.6.20-16-sparc64, linux-image-2.6.22-14-itanium, linux-image-2.6.22-14-virtual, linux-image-2.6.17-12-mckinley, linux-image-2.6.20-16-386, linux-image-2.6.17-12-powerpc64-smp, linux-image-2.6.22-14-sparc64-smp, linux-image-2.6.17-12-hppa64
  • USN-558-1: linux-image-2.6.17-12-hppa32, linux-source-2.6.22, linux-image-2.6.20-16-server-bigiron, linux-image-2.6.20-16-hppa64, linux-image-2.6.20-16-mckinley, linux-image-2.6.20-16-sparc64-smp, linux-image-2.6.22-14-cell, linux-image-2.6.20-16-lowlatency, linux-source-2.6.17, linux-image-2.6.17-12-server, linux-image-2.6.22-14-generic, linux-image-2.6.17-12-generic, linux-image-2.6.17-12-sparc64, linux-image-2.6.20-16-hppa32, linux-image-2.6.17-12-386, linux-image-2.6.22-14-server, linux-image-2.6.17-12-itanium, linux-image-2.6.22-14-xen, linux-image-2.6.22-14-rt, linux-image-2.6.17-12-powerpc, linux-image-2.6.22-14-powerpc64-smp, linux-image-2.6.22-14-powerpc, linux-image-2.6.22-14-sparc64, linux-image-2.6.20-16-generic, linux-image-2.6.22-14-ume, linux-image-2.6.17-12-sparc64-smp, linux-image-2.6.22-14-lpiacompat, linux-image-2.6.17-12-powerpc-smp, linux-image-2.6.22-14-hppa32, linux-image-2.6.20-16-powerpc-smp, linux-image-2.6.22-14-hppa64, linux-source-2.6.20, linux-image-2.6.17-12-server-bigiron, linux-image-2.6.20-16-powerpc64-smp, linux-image-2.6.20-16-powerpc, linux-image-2.6.22-14-lpia, linux-image-2.6.22-14-mckinley, linux-image-2.6.22-14-powerpc-smp, linux-image-2.6.20-16-server, linux-image-2.6.20-16-itanium, linux-image-2.6.22-14-386, linux-image-2.6.20-16-sparc64, linux-image-2.6.22-14-itanium, linux-image-2.6.22-14-virtual, linux-image-2.6.17-12-mckinley, linux-image-2.6.20-16-386, linux-image-2.6.17-12-powerpc64-smp, linux-image-2.6.22-14-sparc64-smp, linux-image-2.6.17-12-hppa64