Secunia Security Advisory - Some vulnerabilities have been reported in the Linux Kernel, which potentially can be exploited by malicious, local users to cause a DoS (Denial of Service).
8b7d5778f3835800a3dcdcb8e9255ea459cf8282c83ba924b24e3a14bfb33db5
TITLE:
Linux Kernel Multiple Denial of Service Vulnerabilities
SECUNIA ADVISORY ID:
SA17786
VERIFY ADVISORY:
http://secunia.com/advisories/17786/
CRITICAL:
Not critical
IMPACT:
DoS
WHERE:
Local system
OPERATING SYSTEM:
Linux Kernel 2.6.x
http://secunia.com/product/2719/
DESCRIPTION:
Some vulnerabilities have been reported in the Linux Kernel, which
potentially can be exploited by malicious, local users to cause a DoS
(Denial of Service).
1) An error in the auto-reap of child processes that have ptrace
attached can lead to dangling ptrace references. This may be
exploited by local users to cause a kernel crash.
2) The use of "printk()" in the "time_out_leases()" function in
"/fs/locks.c" can consume a large amount of kernel log space. This
can be exploited by local users to cause a DoS by generating a large
number of broken leases.
The vulnerabilities have been reported in the 2.6 kernel branch.
SOLUTION:
The vulnerabilities have been fixed in version 2.6.15-rc3.
PROVIDED AND/OR DISCOVERED BY:
1) Oleg Nesterov
2) Avi Kivity
ORIGINAL ADVISORY:
Kernel.org:
http://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.15-rc3
http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7ed0175a462c4c30f6df6fac1cccac058f997739
http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f3a9388e4ebea57583272007311fffa26ebbb305
Red Hat Bugzilla:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=174078
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=174337
----------------------------------------------------------------------
About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.
Subscribe:
http://secunia.com/secunia_security_advisories/
Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/
Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.
----------------------------------------------------------------------