|
Linux Kernel Multiple Vulnerabilities
|
|
Secunia Advisory:
|
SA36763
|
|
|
Release Date:
|
2009-09-17
|
|
Last Update:
|
2009-10-30
|
|
Popularity:
|
1,691 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.
|
