CVE-2009-3888

Severity: medium (CVSS 4.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-11-16 · updated 2026-06-16
Weakness: CWE-399

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.

Affected products

Linux kernel: through 2.6.31.5; 2.6.0, 2.6.1, 2.6.2, 2.6.3, 2.6.4, 2.6.5 (+314)

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=89a8640279f8bb78aaf778d1fc5c4a6778f18064
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.31.6
http://www.openwall.com/lists/oss-security/2009/11/09/2
http://www.openwall.com/lists/oss-security/2009/11/13/3
http://www.ubuntu.com/usn/usn-864-1
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=89a8640279f8bb78aaf778d1fc5c4a6778f18064
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.31.6
http://www.openwall.com/lists/oss-security/2009/11/09/2
http://www.openwall.com/lists/oss-security/2009/11/13/3
http://www.ubuntu.com/usn/usn-864-1

Get alerted when CVE-2009-3888 or the next vulnerability affects your stack