Description
The do_mmap_pgoff function in mm/nommu.c in the Linux kernel before 2.6.31.6, 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.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Linux Kernel 2.6.x - 'fput()' Null Pointer Dereference Local Denial of Service EDB-10017 · dos · Nov 9, 2009 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- [oss-security] 20091113 Re: CVE request - kernel: NOMMU: Dont pass NULL pointers to fput() in do_mmap_pgoff() mailing-list
- USN-864-1 vendor-advisory
- [oss-security] 20091109 CVE request - kernel: NOMMU: Dont pass NULL pointers to fput() in do_mmap_pgoff() mailing-list
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.31.6
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=89a8640279f8bb78aaf778d1fc5c4a6778f18064