Secunia

Multiple vulnerabilities have been reported in the Linux kernel, which can be exploited to disclose information, cause a DoS (Denial of Service), gain escalated privileges, or potentially compromise a vulnerable system.

1) Some unspecified errors have been reported in the ISO9660 filesystem handler including Rock Ridge and Juliet extensions. These can be exploited via a specially crafted filesystem to cause a DoS or potentially corrupt memory leading to execution of arbitrary code.

2) A signedness error in the "bluez_sock_create()" function when creating bluetooth sockets can potentially be exploited to gain root privileges on a vulnerable system.

3) An information leak exists in the "ext2_make_empty()" function in the implementation of the ext2 filesystem when creating new directories. This can be exploited to disclose kernel memory.

4) An error in load_elf_library can be exploited to cause a DoS.

5) An error in the "fib_seq_start()" function can be exploited by malicious, local users to crash the system via /proc/net/route.

Solution
Update to version 2.6.11.6.
Further details available in Customer Area

Provided and/or discovered by
1) Michal Zalewski
2) Ilja van Sprundel
3) Mathieu Lafon and Romain Francoise, Arkoon Network Security.
4) Yichen Xie
5) Patrick McHardy

Changelog
Further details available in Customer Area

Original Advisory
Kernel.org:
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.11.5
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.11.6
http://kernel.org/pub/linux/kernel/v2.4/testing/patch-2.4.30.log

Arkoon Network Security:
http://arkoon.net/advisories/ext2-make-empty-leak.txt

Other references
Further details available in Customer Area

Deep Links
Links available in Customer Area