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Secunia Security Advisory 45253

Secunia Security Advisory 45253
Posted Jul 15, 2011
Authored by Secunia | Site secunia.com

Secunia Security Advisory - Red Hat has issued an update for the kernel. This fixes multiple weaknesses and vulnerabilities, which can be exploited by malicious, local users to disclose certain system information, bypass certain security restrictions, cause a DoS (Denial of Service), and to potentially gain escalated privileges, by malicious, local users in a guest virtual machine to cause a DoS, and by malicious people to cause a DoS.

tags | advisory, denial of service, kernel, local, vulnerability
systems | linux, redhat
SHA-256 | 819b206e43052a953259fad7a9c42c63cc08c5caf0010b9862ab951de1987bef

Secunia Security Advisory 45253

Change Mirror Download
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The Secunia Vulnerability Intelligence Manager (VIM) enables you to handle vulnerability threats in a simple, cost effective way.

Read more and request a free trial:
http://secunia.com/products/corporate/vim/

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TITLE:
Red Hat update for kernel

SECUNIA ADVISORY ID:
SA45253

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/45253/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=45253

RELEASE DATE:
2011-07-15

DISCUSS ADVISORY:
http://secunia.com/advisories/45253/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
* Last Update
* Popularity
* Comments
* Criticality Level
* Impact
* Where
* Solution Status
* Operating System / Software
* CVE Reference(s)

http://secunia.com/advisories/45253/

ONLY AVAILABLE IN CUSTOMER AREA:
* Authentication Level
* Report Reliability
* Secunia PoC
* Secunia Analysis
* Systems Affected
* Approve Distribution
* Remediation Status
* Secunia CVSS Score
* CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=45253

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
* AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
Red Hat has issued an update for the kernel. This fixes multiple
weaknesses and vulnerabilities, which can be exploited by malicious,
local users to disclose certain system information, bypass certain
security restrictions, cause a DoS (Denial of Service), and to
potentially gain escalated privileges, by malicious, local users in a
guest virtual machine to cause a DoS, and by malicious people to cause
a DoS.

For more information:
SA42176
SA43358
SA43693
SA43806
SA44164
SA44248
SA44466
SA44754

1) A vulnerability related to VLAN GRO_DROP and the
"napi_reuse_skb()" function can be exploited to cause a DoS by
sending specially crafted packets.

2) A vulnerability in the Xen hypervisor implementation can be
exploited to crash a guest virtual machine.

Note: This vulnerability only affects Intel x86 processors with
enabled Intel VT-x extension.

SOLUTION:
Updated packages are available via Red Hat Network.

Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

PROVIDED AND/OR DISCOVERED BY:
1) The vendor credits Ryan Sweat.
2) Reported by the vendor.

ORIGINAL ADVISORY:
RHSA-2011:0927-01:
https://rhn.redhat.com/errata/RHSA-2011-0927.html

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

----------------------------------------------------------------------

About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/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.

----------------------------------------------------------------------

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