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Linux Kernel Sysfs "fill_write_buffer" Function Local Denial of Service Vulnerability


Title : Linux Kernel Sysfs "fill_write_buffer" Function Local Denial of Service Vulnerability
Advisory ID : FrSIRT/ADV-2006-1273
CVE ID : CVE-2006-1055
Rated as : Low Risk 
Remotely Exploitable : No
Locally Exploitable : Yes
Release Date : 2006-04-07

Advisory Details

 
  Description
  Affected Products
  Solution
  References
Technical Description    Receive FrSIRT alerts in a Text format  Receive FrSIRT alerts in a PDF format  Receive FrSIRT alerts in an XML format  Receive FrSIRT notifications by SMS 

A vulnerability has been identified in Linux Kernel, which could be exploited by local attackers to cause a denial of service. This flaw is due to an error in the "fill_write_buffer()" [fs/sysfs/file.c] function that does not zero terminate a buffer when processing the "PAGE_SIZE" value, which could be exploited by malicious users to crash a vulnerable system.

Credits

Vulnerability reported by Al Viro

ChangeLog

2006-04-07 : Initial release

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