The do_mmap_pgoff function in mm/nommu.c in the Linux kernel before 188.8.131.52, when the CPU lacks a memory management unit, allows local users to cause a denial of service (OOPS) via an application that attempts to allocate a large amount of memory.
CVSS Severity (version 2.0):
Impact Subscore: 6.9
Exploitability Subscore: 3.9
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows disruption of service
Official Statement from Red Hat (11/19/2009)
Not vulnerable. The Linux kernels as shipped with Red Hat Enterprise Linux 3, 4, 5, and Red Hat Enterprise MRG did not have MMU disabled, and therefore are not affected by this issue.
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[oss-security] 20091109 CVE request - kernel: NOMMU: Dont pass NULL pointers to fput() in do_mmap_pgoff()
[oss-security] 20091113 Re: CVE request - kernel: NOMMU: Dont pass NULL pointers to fput() in do_mmap_pgoff()