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Secunia Security Advisory 44747

Secunia Security Advisory 44747
Posted May 31, 2011
Authored by Secunia | Site secunia.com

Secunia Security Advisory - A vulnerability has been reported in the Linux Kernel, which can be exploited by malicious, local users to cause a DoS (Denial of Service).

tags | advisory, denial of service, kernel, local
systems | linux
SHA-256 | 80b78981c06ab8ba78eae3eccf56cd0d78a072d0beaf719068549bc8de2181b3

Secunia Security Advisory 44747

Change Mirror Download
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Alerts when vulnerabilities pose a threat to your infrastructure
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Watch our quick solution overview:
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TITLE:
Linux Kernel "key_replace_session_keyring()" NULL Pointer Dereference
Denial of Service

SECUNIA ADVISORY ID:
SA44747

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/44747/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=44747

RELEASE DATE:
2011-06-01

DISCUSS ADVISORY:
http://secunia.com/advisories/44747/#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/44747/

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=44747

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:
A vulnerability has been reported in the Linux Kernel, which can be
exploited by malicious, local users to cause a DoS (Denial of
Service).

The vulnerability is caused due to an error within the
"key_replace_session_keyring()" function in
security/keys/process_keys.c, which can be exploited to cause a NULL
pointer dereference and e.g. crash the kernel.

The vulnerability is reported in version 2.6.39. Other versions may
also be affected.

SOLUTION:
Fixed in version 3.0-rc1.

PROVIDED AND/OR DISCOVERED BY:
Robert Swiecki

ORIGINAL ADVISORY:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=f7285b5d631fd6096b11c6af0058ed3a2b30ef4e

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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

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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