77450 : Linux Kernel security/keys/user_defined.c user_update() Function NULL Pointer Dereference Negative Key Parsing Remote DoS
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Timeline

Disclosure Date
2011-11-15

Description

<em style='font-weight:bold;'>(Description Provided by <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=2011-4110" target="_blank">CVE</a>)</em> : The user_update function in security/keys/user_defined.c in the Linux kernel 2.6 allows local users to cause a denial of service (NULL pointer dereference and kernel oops) via vectors related to a user-defined key and "updating a negative key into a fully instantiated key."

Classification

Location: Remote / Network Access
Attack Type: Denial of Service
Impact: Loss of Availability
Solution: Patch / RCS
Exploit: Exploit Unknown
Disclosure: Vendor Verified

Solution

Currently, there are no known workarounds or upgrades to correct this issue. However, multiple vendors have released patches to address this vulnerability.

Products

Unknown or Incomplete

References

Credit

Unknown or Incomplete

CVSSv2 Score

CVSSv2 Base Score = 2.1
Source: nvd.nist.gov | Generated: 2012-01-30 | Disagree?

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