Secunia Logo  


Secunia PSI WorldMap
 
Linux Kernel Multiple Vulnerabilities
Secunia Advisory: SA36763
Release Date: 2009-09-17
Last Update: 2009-10-30
Popularity: 1,425 views

Critical:
Less critical
Impact: Security Bypass
Privilege escalation
DoS
Where: From remote
Solution Status: Vendor Patch

OS:Linux Kernel 2.6.x

Secunia CVSS-2 Score: Available in Secunia business solutions

Subscribe: Instant alerts on relevant vulnerabilities


Advisory Content (Page 1 of 3)[ 1 ] [ 2 ] [ 3 ]

Description:
Some vulnerabilities have been reported in the Linux Kernel, which can be exploited by malicious, local users to bypass certain security restrictions, cause a DoS (Denial of Service), and gain escalated privileges and by malicious people to cause a DoS.

1) An error exists within the "find_ie()" function in net/wireless/scan.c, which can be exploited to trigger an infinite loop by sending specially crafted packets.

Note: This does not affect versions prior to 2.6.30.

2) A boundary error within the "perf_copy_attr()" function in kernel/perf_counter.c can be exploited to cause a buffer overflow by e.g. passing specially crafted data via the "perf_counter_open()" syscall.

Note: This does not affect versions prior to 2.6.31.

3) The "kvm_emulate_hypercall()" function in arch/x86/kvm/x86.c does not reject MMU hypercalls from unprivileged guests, which can be exploited to e.g. crash a guest kernel.

4) The "handle_dr()" function in arch/x86/kvm/vmx.c does not properly check the current privilege level before emulating access to debug registers, which can be exploited to e.g. set hardware breakpoints from userspace.

Change Page:
[ 1 ] [ 2 ] [ 3 ]



Track this Secunia Advisory
Customers of the Secunia Vulnerability Intelligence solutions will automatically receive updates when new information regarding this advisory is released.

Read more about our Vulnerability Intelligence solutions and what they can do for you and your company.

About this Secunia Advisory
Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.

Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
  
Latest Advisories

27th Nov, 2009
New advisories: 8
New vulnerabilities: 15
Updated advisories: 11

Moderately // 216 views
Ubuntu update for php5

26th Nov, 2009
New advisories: 15
New vulnerabilities: 37
Updated advisories: 48

Moderately // 377 views
SugarCRM Multiple Vulnerabilities

Solutions | More...  


Send Feedback to Secunia
If you have new information regarding this Secunia advisory or a product in our database, please send it to us using either our web form or email us at vuln@secunia.com.

Ideas, suggestions, and other feedback are most welcome.

Most Popular - 3 Hours

1. Robo-FTP Response Processing Buffer Overflow Vulnerability // 24 views
2. Adobe Flash Player Multiple Vulnerabilities // 23 views
3. Sun Java JDK / JRE Multiple Vulnerabilities // 23 views
4. XM Easy Personal FTP Server Denial of Service Vulnerability // 21 views
5. WebHints Shell Command Injection Vulnerability // 20 views
6. Joomla GCalendar Component "gcid" SQL Injection // 19 views
7. RADIO istek scripti Information Disclosure Security Issue // 19 views
8. DotNetNuke Cross-Site Scripting and Information Disclosure // 19 views
9. Ubuntu update for php5 // 19 views
10. Joomla LyftenBloggie Component "author" SQL Injection Vulnerability // 19 views