Linux Kernel mm: thp: pmd_present and PROT_NONE Local Denial of Service Vulnerability

Release date:
Updated on:

Affected Systems:
Linux kernel 2.6.x
Description:
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Bugtraq id: 58046
CVE (CAN) ID: CVE-2013-0309
 
Linux Kernel is the Kernel of the Linux operating system.
 
The VM using pmd_present will return the wrong range value of PROT_NONE. When the code using pmd_present is reported to be missing, the kernel will crash. Unauthorized Local Users can exploit this vulnerability to crash the system.
 
<* Source: Petr Matousek (pmatouse @ ...hat.com)

Link: https://bugzilla.redhat.com/show_bug.cgi? CVE-2013-0309
*>

Suggestion:
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Vendor patch:
 
Linux
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The vendor has released a patch to fix this security problem. Please download it from the vendor's homepage:
 
Http://git.kernel.org /? P = linux/kernel/git/torvalds/linux. git; a = commit; h = 027ef6c8